Une campagne orgnanisée par :
- IEO - Instituto Español de Oceanografía
- MNHN - Muséum national d'Histoire naturelle
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Chefs de mission
Date et lieu de départThu Apr 09 00:00:00 CEST 2009 Maputo (Mozambique)
Date et lieu d'arrivéeFri Apr 17 00:00:00 CEST 2009 Maputo (Mozambique)
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|Thu Apr 09 00:00:00 CEST 2009||Fri Apr 17 00:00:00 CEST 2009||Vizconde de Eza|
Travaux effectués :
Sammy De Grave, N., Pentcheff, Dean, Ahyong, Shane T., Chan, Tin‐Yam, Crandall, Keith A., Dworschak, Peter C., Felder, Darryl L., Feldmann, Rodney M., Fransen, Charles H. J. M., Goulding, Laura Y. D., Lemaitre, Rafael, Low, Martyn E. Y., Ng, Peter K.L., Schweitzer, Carrie E., Tan, S. H., Tshudy, Dale, Wetzer, Regina L., 2009, A classification of living and fossil genera of decapod crustaceans, Raffles Bulletin of Zoology, suppl. 21, 1–109
Résumé [+] [-]We present an updated classification for the entire Crustacea Decapoda, listing all known families and genera organized by higher taxonomic groups and including estimates of the number of species in every genus. All taxonomic names are also linked to the verified literature in which they were described, the first compilation of its kind for the Decapoda. To arrive at this compilation, we began with the classification scheme provided by Martin & Davis (2001) for extant families,, updated the higher classification and included the fossil taxa. The resultant framework was then populated with the currently valid genera and an estimate of species numbers within each genus. Our resulting classification, spanning both extant (living) and fossil taxa, is the first comprehensive estimate of taxonomic diversity within the entire Decapoda. The classification consists of 233 families of decapods containing 2,725 genera and an estimated 17,635 species (including both extant and fossil species). Of the families in our classification, 53 are exclusively fossil, 109 contain both fossil and extant species, and 71 are extant only. The current estimate for extant species is 14,756, whereas 2,979 species are known exclusively as fossils.
Alf, Axel, Maestrati, Philippe, Bouchet, Philippe, 2010, New species of Bolma (Gastropoda: Vetigastropoda: Turbinidae) from the tropical deep sea., The Nautilus, 124, 2, 93-99
Résumé [+] [-]Five new species of Bolma are described, three from New Caledonia, one from Mozambique and one from French Polynesia, all from deep reef (75-155 m) to bathyal (230-580 m) depths. Four of the new species have been sequenced, and their holotypes are also voucher specimens for COl sequences, thus contributing to a new generation of name-bealing types. The descriptions and names are provided in advance of a forthcoming shell-based revision of the genus Bolma, and in advance of a detailed molecular- and morphology-based study of Bolma in New Caledonian waters.
Cabezas, Patricia, Macpherson, Enrique, Machordom, Annie, 2010, Taxonomic revision of the genus Paramunida Baba, 1988 (Crustacea: Decapoda: Galatheidae): a morphological and molecular approach., Zootaxa, 2712, 1-60
Résumé [+] [-]The genus Paramunida belongs to the family Galatheidae, one of the most species rich families among anomuran decapod crustaceans. In spite of the genus has received substantial taxonomic attention, subtle morphological variations observed in numerous samples suggest the existence of undescribed species. The examination of many specimens collected during recent expeditions and morphological and molecular comparisons with previously described species have revelaled the existence of eleven new lineages. All of them are distinguished by subtle and constant morphological differences, which are in agreement with molecular divergences reported for the mitochondrial markers ND1 and 16S rRNA. Here, we describe and illustrate the new species, providing brief redescriptions for the previously known species, and a dichotomous identification key for all species in the genus.
Komai, Tomoyuki, Chan, Tin‐Yam, 2010, Two new pandalid shrimps and the discovery of the second specimen of the rare hippolytid shrimp Leontocaris bulga Taylor & Poore, 1998 (Crustacea, Decapoda) from the Mozambique MAINBAZA Cruise, Zoosystema, 32, 4, 625-641
doi: 10.5252/z2010n4a6 Résumé [+] [-]Two new species of the caridean shrimp family Pandalidae were discovered from the recent deep-sea MAINBAZA cruise in the Mozambique Channel. Pandalina spinicauda n. sp. is unique in the genus by having much more numerous dorsolateral spines on the telson. Plesionika neon n. sp. belongs to the "Plesionika rostricrescentis (Bate, 1888)" group that bears distinct basal rostral crest and with elaborate colour patterns, but has the shortest stylocerite and a very different coloration. The rare hippolytid shrimp Leontocaris bulga Taylor & Poore, 1998 was also collected by the MAINBAZA cruise. Leontocaris bulga has only been known before from a damaged specimen lacking abdomen and collected off Tasmania, and therefore, the Mozambique specimen is described and illustrated in detail.
Cabezas, Patricia, Macpherson, Enrique, Machordom, Annie, 2011, Allogalathea (Decapoda: Galatheidae): a monospecific genus of squat lobster?, Zoological Journal of the Linnean Society, 162, 2, 245-270
doi: 10.1111/j.1096-3642.2010.00681.x Résumé [+] [-]The genus Allogalathea was established by Baba in 1969 to include the well-known species Galathea elegans. This species is widely distributed across the Indo-West Pacific Ocean, and is characterized by living in close association with crinoids, and by its conspicuous coloration. Although the genus is considered monospecific, different colour patterns and discrete morphological variations mainly associated with the rostrum and chelipeds have been reported. These differences could point to cryptic species, thereby questioning Allogalathea as a monotypic taxon. To address this issue, we sequenced the mitochondrial cytochrome oxidase I (COI; 658 bp) and 16S rRNA (882 bp) genes and the nuclear gene phosphoenolpyruvate carboxykinase (PEPCK; 598 bp) in numerous specimens from eight different localities, and also examined their morphological characters. DNA sequences were analysed using maximum-parsimony, maximum-likelihood, and Bayesian approaches of phylogenetic inference. The resulting trees were combined with morphological evidence to test species boundaries. Our molecular data revealed four deeply divergent clades, which can be distinguished by subtle morphological differences in the spinulation and length: breadth ratio of the P1 carpus, spinulation of the walking legs, and shape of the rostrum. Our findings indicated that Allogalathea elegans is in fact a species complex comprising four different species, which, although genetically very distinct, are morphologically very similar. We provide morphological descriptions and a key to these four species of the genus.
De Grave, Sammy, Fransen, Charles H. J. M., 2011, Carideorum catalogus: the recent species of the dendrobranchiate, stenopodidean, procarididean and caridean shrimps (Crustacea: Decapoda), Zoologische Mededelingen, 85, 9
Résumé [+] [-]Over the last decade or so, much has been written on the classification of Decapoda, fuelled by a surge in molecular phylogenetic studies, as well as close scrutiny of internal and external morphological characteristics. As discussed by Fransen & De Grave (2009), such studies on shrimps are still somewhat ”thin on the ground”, at least compared to the more extensive work done on the Brachyura and Anomura. At a higher level in decapod classification it has long been recognised that three distinct lineages of shrimps can be distinguished: Dendrobranchiata, Stenopodidea and Caridea, a system which has not been seriously challenged by recent studies. The internal classification of Dendrobranchiata and Stenopodidea alike has been stable for some time, with the only major addition being the family Macromaxillocarididae Alvarez, Iliffe & Villalobos (2006) to the Stenopodidea in recent years. A different picture has emerged for Caridea very recently with Bracken et al. (2009) and Chan et al. (2010), both drawing attention to the non-monophyletic status of certain superfamilies and families. Further, we are aware of work currently in progress (some by the authors of this compilation) corroborating the hypothesis that the current classification of Caridea is unnatural, lines of study which will lead to the resurrection of certain family names as well as further refinement to other families. As one of our objectives for the current effort was to link this compilation of species level information with the earlier work by Chace (1992) for families and Holthuis (1993a) for genera, we have elected to largely follow the classification outlined by De Grave et al. (2009) which builds upon this earlier work. As such, it was deemed advisable to include the recently resurrected family Acanthephyridae Spence Bate, 1888 in the superfamily Oplophoroidea, rather than in this catalogue to create a new superfamily, which would perhaps be more congruent with the results in Chan et al. (2010). Although we follow herein the classification scheme of De Grave et al. (2009), two recent changes have been implemented. The clarification of the status of Galatheacaris abyssalis Vereshchaka, 1997a, as the megalopal stage of Eugonatonotus chacei Chan & Yu, 1991a, by De Grave et al. (2010) resulted in the removal of the family Galatheacarididae and superfamily Galatheacaridoidea in the current listing. Bracken et al. (2010) clarified the status of the family Procarididae, resulting in the recognition of a fourth group of shrimp, Infraorder Procarididea.
- Fraussen, Koen, Chino, Mitsuo, 2011, Notes about Engina J.E. Gray, 1839 (Gastropoda: Buccinidae) with description of three new species from the west Pacific, Visaya, 3, 3, 63-75
Fraussen, Koen, Rosado, José, 2011, The Cantharus group (Gastropoda: Buccinidae) on Almirante Leite Bank (Mozambique) with description of two species and one new genus, Novapex, 12, 3-4, 73-79
Résumé [+] [-]A new genus and two new species of deep water Buccinidae collected during MAINBAZA are described: Pollia imprimelata sp. nov. And Micrologus mochatinctus gen. & sp. nov., both from Almirante Leite Bank. Pollia sowerbyana (Melvill & Standen, 1903) is recorded from Madagascar and the variability of this species is discussed.
Modica, Maria Vittoria, Bouchet, Philippe, Cruaud, Corinne, Utge, José, Oliverio, Marco, 2011, Molecular phylogeny of the nutmeg shells (Neogastropoda, Cancellariidae), Molecular Phylogenetics and Evolution, 59, 3, 685-697
doi: 10.1016/j.ympev.2011.03.022 Résumé [+] [-]Cancellariidae, or nutmeg shells, is a family of marine gastropods that feed on the body fluids and the egg cases of marine animals. The 300 or so living species are distributed worldwide, mostly on soft bottoms, from intertidal to depths of about 1000 m. Although they are a key group for the understanding of neogastropod evolution, they are still poorly known in terms of anatomy, ecology and systematics. This paper reports the first mitochondrial multi-gene phylogenetic hypothesis for the group. Data were collected for 50 morphospecies, representative of 22 genera belonging to the three currently recognized subfamilies. Sequences from three genes (12S, 16S and COI) were analyzed with Maximum Likelihood analysis and Bayesian Inference, both as single gene datasets and in two partitioned concatenated alignment. Largely consistent topologies were obtained and discussed with respect to the traditional subfamilial arrangements. The obtained phylogenetic trees were also used to produce Robinson-Foulds supertrees. Our results confirmed the monophyly of the subfamily Plesiotritoninae, while Admetinae and Cancellariinae, as currently conceived, were retrieved as polyphyletic. Based on our findings we propose changes to the systematic arrangement of these subfamilies. At a lower taxonomic rank, our results highlighted the rampant homoplasy of many characters traditionally used to segregate genera, and thus the need of a critical re-evaluation of the contents of many genera (e.g. Nipponaphera, Merica, Sydaphera, Bivetia), the monophyly of which was not recovered.
- Modica, Maria-Victoria, Verhecken A., Oliverio, Marco, 2011, The relationships of the enigmatic neogastropod Loxotaphrus (Cancellariidae), New Zealand Journal of Geology and Geophysics, 54, 1, 115–124
Richer de Forges, Bertrand, 2011, Majoid crabs from the Mozambique Channel with the description of a new species of Oxypleurodon Miers, 1886 (Decapoda, Brachyura), Crustaceana Monographs, 14, 645-653
Résumé [+] [-]The study of the crabs collected in the Mozambique Channel in the Indian Ocean by the cruises MAINBAZA and MIRIKY permit the description of the new species Oxypleurodon holthuisi. The four single rostrum species from the Indian Ocean for which the genus Nasutocarcinus Tavares, 1991 was created are placed in Oxypleurodon.
Bail, Patrice, Puillandre, Nicolas, 2012, A new species of Fusivoluta Martens, 1902 (Gastropoda: Volutidae) from Mozambique, The Nautilus, 126, 4, 127-135
Résumé [+] [-]During a recent expedition to Mozambique, several specimens attributed to the genus Fusivoluta von Martens, 1902 were collected between 1100 and 1820 m deep. Among them, a new species has been found and is here described and compared with the other East African Fusivoluta. Several livecollected specimens, belonging to the newly described species and to Fusivoluta clarkei Rehder, 1969 were sequenced for a nuclear gene (28S), revealing fixed differences between the two species.
Castelin, Magalie, Puillandre, Nicolas, Kantor, Yuri, Modica, Maria Vittoria, Terryn, Yves, Cruaud, Corinne, Bouchet, Philippe, Holford, Mandë, 2012, Macroevolution of venom apparatus innovations in auger snails (Gastropoda; Conoidea; Terebridae), Molecular Phylogenetics and Evolution, 64, 1, 21-44
doi: 10.1016/j.ympev.2012.03.001 Résumé [+] [-]The Terebridae are a diverse family of tropical and subtropical marine, gastropods that use a complex and modular venom apparatus to produce toxins that capture polychaete and enteropneust preys. The complexity of the terebrid venom apparatus suggests that venom apparatus development in the Terebridae could be linked to the diversification of the group and can be analyzed within a molecular phylogenetic scaffold to better understand terebrid evolution. Presented here is a molecular phylogeny of 89 terebrid species belonging to 12 of the 15 currently accepted genera, based on Bayesian inference and Maximum Likelihood analyses of amplicons of 3 mitochondrial (COI, 165 and 12S) and one nuclear (28S) genes. The evolution of the anatomy of the terebrid venom apparatus was assessed by mapping traits of six related characters: proboscis, venom gland, odontophore, accessory proboscis structure, radula, and salivary glands. A novel result concerning terebrid phylogeny was the discovery of a previously unrecognized lineage, which includes species of Euterebra and Duplicaria. The non-monophyly of most terebrid genera analyzed indicates that the current genus-level classification of the group is plagued with homoplasy and requires further taxonomic investigations. Foregut anatomy in the family Terebridae reveals an inordinate diversity of features that covers the range of variability within the entire superfamily Conoidea, and that hypodermic radulae have likely evolved independently on at least three occasions. These findings illustrate that terebrid venom apparatus evolution is not perfunctory, and involves independent and numerous changes of central features in the foregut anatomy. The multiple emergence of hypodermic marginal radular teeth in terebrids are presumably associated with variable functionalities, suggesting that terebrids have adapted to dietary changes that may have resulted from predator-prey relationships. The anatomical and phylogenetic results presented serve as a starting point to advance investigations about the role of predator-prey interactions in the diversification of the Terebridae and the impact on their peptide toxins, which are promising bioactive compounds for biomedical research and therapeutic drug development. (c) 2012 Elsevier Inc. All rights reserved.
Castelin, Magalie, Lorion, Julien, Brisset, Julien, Cruaud, Corinne, Maestrati, Philippe, Utge, Jose, Samadi, Sarah, 2012, Speciation patterns in gastropods with long-lived larvae from deep-sea seamounts, Molecular Ecology, 21, 19, 4828-4853
doi: 10.1111/j.1365-294X.2012.05743.x Résumé [+] [-]Characterizing speciation processes in the sea remains a highly contentious issue because geographic barriers to gene exchange, which are the initial conditions for the allopatric speciation model, are not obvious. Moreover, many benthic marine organisms have long-lived planktonic larvae that allow them to connect distant patches of habitats. We here analyse the pattern of speciation in the gastropod genus Bursa in which all species have long-lived and planktonic-feeding larvae. We use a large taxonomic and ecologic coverage of Bursidae from the Indo-Pacific. We use an integrative approach to taxonomy to give more support to available taxonomic hypotheses. This analysis revealed cryptic lineages and suggest that a taxonomic revision of the family should be performed. A molecular clock calibrated from the fossil record was used to estimate divergence times. We then focus on the three co-existing species living in the deep waters of New Caledonia. Over the wide sampled area, no genetic structure was detected for the three species. We show that among New Caledonia species, Bursa fijiensis and Bursa quirihorai are reciprocally monophyletic. These two species are the two more closely related species in the inferred phylogeny. The present biogeographic ranges of the two species and the estimated time of divergence make the scenario of geographic isolation followed by secondary contact unlikely.
Castro, Peter, 2012, Goneplacid crabs (Decapoda, Brachyura, Goneplacidae) of the Mainbaza and Miriki Expeditions to the Mozambique Channel, with the description of a new species of Pycnoplax Castro, 2007, Crustaceana Monographs, 17, 91-104
Résumé [+] [-]A study of the goneplacid crabs (Goneplacidae) collected in the Mozambique Channel, southwestern Indian Ocean by the MAINBAZA expedition along the Mozambique coast and the MIRIKI expedition off northwestern Madagascar revealed the presence of four species, one of which is described as a new species of Pycnoplax Castro, 2007. The new species differs from its six congeners by the morphology of the carapace front, GI, and vulva, and by having a complete thoracic sternal suture 7/8. It is the first species of Pycnoplax recorded from the Indian Ocean, its congeners being restricted to the Pacific. The discovery of a new species has necessitated a review of the diagnosis of Pycnoplax and the key to its species.
- Castro P., 2012, Studies on Eumalacostraca: A Homage to Masatsune Takeda: Goneplacid crabs (Decapoda, Brachyura, Goneplacidae) of the Mainbaza and Miriki expeditions to the Mozambique channel, with the description of a new species of pycnoplax castro, 2007, Crustaceana Monographs, 17, 91-104
Chan, Benny K.K., Kolbasov, Gregory A., Cheang, Chi-Chiu, 2012, Cryptic diversity of the acrothoracican barnacle Armatoglyptes taiwanus in the Indo-Pacific waters, with description of a new species from the Mozambique Channel collected from the MAINBAZA cruise, Zoosystema, 34, 1, 5-20
doi: 10.5252/z2012n1a1 Résumé [+] [-]Cirripedes of the superorder Acrothoracica are normally found as epizoic borings on marine calcareous substrates. Armatoglyptes taiwanus (Utinomi, 1950) is a lithoglyptid acrothoracican barnacle reported from different parts of the Indo-Pacific. Recent studies have demonstrated phylogenetic breaks between the Indian and Pacific Oceans populations in widespread Indo-Pacific marine organisms due to isolation events during the Pleistocene glaciations. It is possible that A. taiwanus represents a cryptic species complex in the Indo-Pacific, which the previous studies have failed to identify from morphology alone. In the present study, we analyzed the morphology and the sequence divergence of the 12S rDNA of A. taiwanus from the Indo-Pacific region, including Taiwan and the Philippines in the Pacific, and Phuket Island (Thailand) and the Mozambique Channel in the Indian Ocean, to test whetherA. taiwanus is a cryptic species across its geographical range. The results showed that A. taiwanus has a homogeneous population structure in Taiwan, the Philippines, and Phuket Island (sequence divergence < 1%). Specimens from the Mozambique Channel, although morphologically similar to A. taiwanus, have a greater sequence divergence of 9.4% from A. taiwanus in the Pacific, and thus appeared to represent a new species, described herein as Armatoglyptes flexuosus n. sp. Although both species are morphologically similar, A. flexuosus n. sp. has more strongly bent/recurved posterior processes of the opercular bars and feebler armament of the orificial knob than does A. taiwanus from Taiwan (type locality). Phylogenetic analysis showed that populations of A. flexuosus n. sp. from the Mozambique Channel and A. taiwanus from the Pacific region are indeed closely related. Populations of their common ancestor may have become isolated and underwent speciation during the Pleistocene glaciations.
- Geiger, Daniel L., 2012, Monograph of the little slit shells. Volume 1. Introduction, Scissurellidae, Santa Barbara Museum of Natural History Monographs, 1, 7, 1-728
- Geiger, Daniel L., 2012, Monograph of the little slit shells. Volume 2. Anatomidae, Larocheidae, Depressizonidae, Sutilizonidae, Temnocinclidae, Santa Barbara Museum of Natural History Monographs, 2, 7, 729-1291
Herbert, David G., 2012, A revision of the Chilodontidae (Gastropoda: Vetigastropoda: Seguenzioidea) of southern Africa and the south-western Indian Ocean, African Invertebrates, 53, 2, 381–502
Résumé [+] [-]All species of Chilodontidae known to occur in the south-western Indian Ocean are discussed (27 species, of which eight new, belonging to nine genera, of which three new). Keys to genera and species are provided. Observations on protoconch form, shell microsculpture, radula morphology, operculum shape and external anatomy are given, together with summary biological observations. The genus Agathodonta Cossmann, 1918 is not considered to be applicable to the extant species for which it has been recently used and a new genus is proposed for these living forms. Type specimens of a number of extralimital species examined for comparative purposes are illustrated. New genera: Ascetostoma, Clypeostoma and Pholidotrope. New species: Clypeostoma reticulatum, Danilia boucheti, Danilia textilis, Herpetopoma serratocinctum, Herpetopoma stictum, Pholidotrope gloriosa, Vaceuchelus cretaceus and Vaceuchelus jayorum. New synonyms: Cantharidus pliciferus Schepman, 1908 = Perrinia angulifera (A. Adams, 1853); Turcica (Perrinia) waiwailevensis Ladd, 1982 and Herpetopoma eboreum Vilvens & Heros, 2003 = Herpetopoma xeniolum (Melvill, 1918); Trochus alabastrum Reeve, 1858 = Euchelus asper (Gmelin, 1791). New combinations: Agathodonta elongata Vilvens, 2001, A. meteorae Neubert, 1998, A. nortoni McLean, 1984, Euchelus townsendianus Melvill & Standen, 1903 and Turcica salpinx Barnard, 1964 are transferred to Clypeostoma gen. n.; Diloma verruca Gould, 1861, Euchelus seychellarum G. & H. Nevill, 1869, Euchelus xeniolum Melvill, 1918, Turcica helix Barnard, 1964 and T. waiwailevensis Ladd, 1982 are transferred to Herpetopoma; Euchelus gemmula Turton, 1932 is transferred to Vaceuchelus; Euchelus providentiae Melvill, 1909 and E. ringens Schepman, 1908 are transferred to Ascetostoma gen. n.; Stomatella cumingii A. Adams, 1854 is transferred to Granata; Turcica konos Barnard, 1964 is transferred to Perrinia. New records for the south-western Indian Ocean: Clypeostoma meteorae (Neubert, 1998); Clypeostoma cf. nortoni (McLean, 1984); Granata cumingii (A. Adams, 1854); Herpetopoma instrictum (Gould, 1849); Herpetopoma ?naokoae Poppe, Tagaro & Dekker, 2006; Herpetopoma xeniolum (Melvill, 1918); Perrinia angulifera (A. Adams, 1853). New records for South Africa: Ascetostoma providentiae (Melvill, 1909); Herpetopoma ?naokoae Poppe, Tagaro & Dekker, 2006; Perrinia angulifera (A. Adams, 1853). Lectotypes designated for: Euchelus favosus Melvill & Standen, 1896; Euchelus gemmula Turton, 1932; Euchelus natalensis Smith, 1906; Euchelus seychellarum G. & H. Nevill, 1869; Euchelus townsendianus Melvill & Standen, 1903; Monodonta alveolata A. Adams, 1853; Monodonta angulifera A. Adams, 1853; Stomatella articulata A. Adams, 1850; Turbo semilugubris Deshayes, 1863. Type locality designations and emendations: Type locality for Stomatella cumingii Adams, 1854, designated to be tropical East Africa; type locality for Turcica salpinx Barnard, 1964, selected to be 'off Cape Morgan, 77 fath.' [-141 m]; type locality of Turcica stellata A. Adams, 1864, emended from 'China Seas' to Gulf of Suez, Red Sea. Danilia Brusina, 1865 is deemed a nomen protectum and Heliciella O.G. Costa, 1861 a nomen oblitum.
Kantor, Yuri I., Puillandre, Nicolas, Rivasseau, Audrey, Bouchet, Philippe, 2012, Neither a buccinid nor a turrid: a new family of deep-sea snails for Belomitra P. Fischer, 1883 (Mollusca, Neogastropoda) with a review of recent Indo-Pacific species, Zootaxa, 3496, 1-64
Résumé [+] [-]The new family Belomitridae is established for the deep-water buccinoid genus Belomitra P. Fischer, 1883, based on morphological (shell and radulae) and molecular evidence. The rachiglossate radula is uniquely characterized by a multicuspid rachidian and lateral teeth with very long narrow bases and two small cusps closer to tip. Molecular analysis of a reduced set of Buccinoidea did not resolve the group as a clade, but shows that Belomitridae forms a well supported clade within Buccinoidea. Species of Belomitra have adult sizes in the 7-53 mm range; they live in deep water, mostly in the 500-2,000 meters range, at low and mid latitudes. Eleven valid species described from the Indo-Pacific were originally named in the families Buccinidae, Columbellidae, Cancellariidae, Volutidae, and Turridae. Fourteen new species are described: Belomitra nesiotica n. sp. (Society Islands to Tonga and Fiji in 580-830 m), B. bouteti n. sp. (Society and Tuamotu Islands in 430-830 m), B. subula n. sp. (Solomon Islands to Vanuatu in 760-1110 m), B. caudata n. sp. (Sulu Sea in 2300 m), B. gymnobela n. sp. (South Pacific, eastern Indonesia and Philippines in 780-2040 m), B. hypsomitra n. sp. (Fiji in 392-407 m), B. brachymitra n. sp. (Fiji in 395-540 m), B. comitas n. sp. (Madagascar and Philippines in 1075-1110 m), B. minutula (Coral Sea in 490 m), B. granulata n. sp. (New Caledonia in 105-860 m), B. reticulata n. sp. (Tonga and Fiji to New Caledonia in 395-656 m), B. decapitata n. sp. (Indian Ocean and New Caledonia in 3680-4400 m), B. admete n. sp. (off Sri Lanka in 2540 m), and B. radula n. sp. (Madagascar in 367-488 m).
Poore, Gary C. B., Andreakis, Nikos, 2012, The Agononida incerta species complex unravelled (Crustacea: Decapoda: Anomura: Munididae), Zootaxa, 3492, 1-29
Résumé [+] [-]Squat lobsters from Australia, east Africa, Taiwan, Philippines and the Norfolk Ridge (southwestern Pacific) previously identified as Agononida incerta (Henderson, 1888) are redescribed as four new species in addition to the original: A. africerta, A. auscerta, A. indocerta and A. norfocerta. A. rubrizonata Macpherson & Baba, 2009, also earlier confused with this species, is redescribed. All six species are morphologically distinguishable only on the basis of the shape of the anterolateral lobe of the telson and the shape and setation of the dactyli of pereopods 2-4. The morphological delineation of these species and their taxonomic status are robustly supported by phylogenetic analysis of the partial mitochondrial COI marker. Taken together, subtle morphological differences, geographical distribution patterns and genetic discontinuities have important implications for understanding diversity, systematics and evolution of squat lobsters.
Tsang, Ling Ming, Achituv, Yair, Chu, Ka Hou, Chan, Benny K.K., 2012, Zoogeography of Intertidal Communities in the West Indian Ocean as Determined by Ocean Circulation Systems: Patterns from the Tetraclita Barnacles, PLoS ONE, 7, 9, e45120
Williams, Suzanne T., 2012, Advances in molecular systematics of the vetigastropod superfamily Trochoidea: Advances in systematics of Trochoidea, Zoologica Scripta, 41, 6, 571-595
doi: 10.1111/j.1463-6409.2012.00552.x Résumé [+] [-]The gastropod superfamily Trochoidea Rafinesque, 1815 is comprised of a diverse range of species, including large and charismatic species of commercial value as well as many small or enigmatic taxa that are only recently being represented in molecular studies. This study includes the first sequences for rarely collected species from the genera Gaza Watson, 1879, Callogaza Dall, 1881, Antimargarita Powell, 1951 and Kaiparathina Laws, 1941. There is also greater taxon sampling of genera that have proved difficult to place in previous phylogenetic analyses, like Tectus Montfort, 1810, Tegula Lesson, 1832, Margarites Gray, 1847, Margarella Thiele, 1893 and trochoid skeneimorphs. There is also greater sampling of poorly represented families Solariellidae and Liotiidae. Bayesian analysis of combined gene data sets based on four (28S, 12S, 16S and COI) or five genes (plus 18S) suggests that there are eight, possibly nine families in Trochoidea including the families Margaritidae and Tegulidae, which are recognized for the first time at familial rank. Other trochoidean families confirmed are Calliostomatidae, Liotiidae, Skeneidae, Solariellidae, Trochidae and Turbinidae. A clade including Cittarium and the commercially important genera Rochia and Tectus may represent a possible ninth family, but this is not formally recognized or described here and awaits confirmation from further studies. Relationships among families were not generally well supported except in the 5-gene tree. In the 5-gene tree, Turbinidae, Liotiidae, Tegulidae, Cittarium, Rochia and Tectus form a well-supported clade consistent with the previous molecular and morphological studies linking these groups. This clade forms another well-supported clade with Margaritidae and Solariellidae. Trochidae is sister to Calliostomatidae with strong support. Subfamilial relationships within Trochidae are consistent with recent molecular studies, with the addition of one new subfamily, Kaiparathininae Marshall 1993 (previously a tribe). Only two subfamilies are recognized within Turbinidae, both with calcareous opercula: Prisogasterinae and Turbininae. Calliostomatidae includes a new subfamily Margarellinae. Its assignment to Calliostomatidae, although well supported by molecular evidence, is surprising considering morphological evidence.
Castro, Peter, Ahyong, Shane T., Chan, Tin-Yam, Corbari, Laure, Ng, Peter K.L., 2013, Brachyuran crabs (Crustacea, Brachyura: Crossotonotidae, Ethusidae, Euryplacidae, Goneplacidae, Latreilliidae, Palicidae, Tetraliidae, Trapeziidae) of the MAINBAZA, MIRIKI, and ATIMO VATAE expeditions to the Mozambique Channel and Madagascar, Mémoires du Muséum national d'Histoire naturelle, 27, 204, 437-466
Résumé [+] [-]Material, mostly deep-water, belonging to eight families of brachyuran crabs are listed from the MAINBAZA, MIRIKI, and ATIMO VATAE expeditions to the Mozambique Channel and northwestern and southern Madagascar. A new species of Ethusa Roux, 1830 (Ethusidae), unique for its vivid colouration and collection in shallow water 13-22 m deep, is described from southern Madagascar. Sphenomerides trapezoides (Wood-Mason & Alcock, 1891) (Trapeziidae) is for the first time recorded from a host, a sponge, and the presence of mucus-gathering setae are for the first time demonstrated in this rarely collected species. A neotype for Dorippe sexdentata Stimpson, 1858 (Ethusidae) is designated to stabilise the taxonomy of the species. The male and the vulva of Ethusa machaera Castro, 2005, and the vulva of E. sexdentata (Stimpson, 1858) are described for the first time. Five species are new records for Madagascar: Crossotonotus spinipes (De Man, 1888) (Crossotonotidae); Carcinoplax ischurodous (Stebbing, 1923), Goneplax clevai Guinot & Castro, 2007, and Ommatocarcinus pulcher Barnard, 1950 (Goneplacidae); and Pseudopalicus sexlobatus (Kensley, 1969) (Palicidae); while Ethusina somalica (Doflein, 1904) (Ethusidae) is a new record for the southwestern Indian Ocean.
Komai, Tomoyuki, Chan, Tin‐Yam, Ahyong, Shane T., Chan, Tin-Yam, Corbari, Laure, Ng, Peter K.L., 2013, New records of Glyphocrangon A. Milne-Edwards, 1881 (Crustacea, Decapoda, Caridea, Glyphocrangonidae) from recent French expeditions off the Mozambique Channel and Papua New Guinea, with description of one new species, Mémoires du Muséum national d'Histoire naturelle, 27, 204, 107-128
Résumé [+] [-]Collections made during recent French expeditions off the Mozambique Channel in the western Indian Ocean (MAINBAZA, MIRIKY) and off Papua New Guinea in the southwestern Pacific (BIOPAPUA) yielded a total of 14 species of the deep-water shrimp genus Glyphocrangon A. Milne-Edwards, 1881, including one new to science: G. amblytes Komai, 2004, G. assimilis De Man, 1918, G. brevis Komai, 2006, G. confusa Komai, 2004, G. crosnieri Komai, 2004, G. dentata Barnard, 1926, G. faxoni De Man, 1918, G. indonesiensis Komai, 2004, G. lowryi Kensley, Tranter & Griffin, 1987, G. proxima Komai, 2004, G. pugnax De Man, 1918, G. pulchra n. sp., G. rudis Komai, 2006, and G. speciosa Komai, 2004. Glyphocrangon pulchra n. sp. belongs to the “G. regalis Bate, 1888” species-complex, and differentiating characters between the new species and closely related allies are discussed. The geographical range of G. indonesiensis is greatly extended from the southwestern Pacific to the western Indian Ocean, the identification being supported by both morphological and molecular data. Slight range extensions are also reported for G. lowryi and G. speciosa.
Ma, Ka Yan, Chu, Ka Hou, Ahyong, Shane T., Chan, Tin‐Yam, Corbari, Laure, Ng, Peter K.L., 2013, The deep-sea spiny lobster genus Puerulus Ortmann, 1897 (Crustacea, Decapoda, Palinuridae), with descriptions of five new species, Mémoires du Muséum national d'Histoire naturelle, 27, 204, 191-230
Résumé [+] [-]Recent French deep-sea expeditions in the Indo-West Pacific resulted in the collection of abundant material of the deep-sea lobster genus Puerulus Ortmann, 1897 (Palinuridae). Difficulties in identification necessitated a generic revision and as a result, five new species are described, all of which are similar to P. angulatus (Bate, 1888). Puerulus angulatus was thought to have a wide distribution from eastern Africa to Marquesas Islands, but is now restricted to the western Pacific, from Japan to Australia. Of the five new species, P. gibbosus n. sp. is found in eastern Africa, P. mesodontus n. sp. from Japan to Fiji, P. richeri n. sp. from the New Caledonia to Marquesas Islands, while P. sericus n. sp. and P. quadridentis n. sp. mainly occur around New Caledonia. Of the other three previously described species, the distribution of P. velutinus Holthuis, 1963, is extended to Fiji, while P. sewelli Ramadan, 1938, and P. carinatus Borradaile, 1910, are still only known from the northern and western parts of the Indian Ocean, respectively. COI gene sequence differences support the morphological species distinctions.
Morassi, Mauro, Bonfitto, Antonio, 2013, Four new African turriform gastropods (Mollusca: Conoidea), Zootaxa, 3710, 3, 271-280
doi: 10.11646/zootaxa.3710.3.5 Résumé [+] [-]Four new species, belonging to four distinct conoidean families, are described from east Africa and Mozambique Channel. Iredalea adenensis sp. nov. (Drilliidae Olsson, 1964), from Gulf of Aden, and Buchema shearmani sp. nov. (Horaiclavidae Bouchet et al., 2011), from off Mogadishu (Somalia), both trawled by local fishermen, represent the first record of their respective genera in eastern Africa. Crassispira somalica sp. nov. (Pseudomelatomidae Morrison, 1965), also collected offshore from Modagishu (Somalia), represents the first eastern Africa species bearing “typical” Crassispira features. Tropidoturris vizcondei sp. nov. (Borsoniidae Bellardi, 1875), from the Mozambique Channel, increases the knowledge of a genus considered endemic to southeastern Africa.
Naruse, Tohru, Ahyong, Shane T., Chan, Tin-Yam, Corbari, Laure, Ng, Peter K.L., 2013, Species of Corycodus A. Milne-Edwards, 1880 (Crustacea, Brachyura, Cyclodorippidae) collected from the Mozambique MAINBAZA and Madagascar MIRIKY expeditions, with description of a new species, Mémoires du Muséum national d'Histoire naturelle, 27, 204, 485-494
Résumé [+] [-]The present study describes a new species of Corycodus A. Milne-Edwards, 1880 (Cyclodorippidae) from Madagascar and re-describes the poorly known C. disjunctipes (Stebbing, 1910) from Mozambique. The two species are compared with congeners in detail. The present study brings the number of Corycodus species to seven.
Richer de Forges, Bertrand, Ahyong, Shane T., Chan, Tin‐Yam, Corbari, Laure, Ng, Peter K.L., 2013, On a collection of spider crabs of the genera Rochinia A. Milne-Edwards, 1875 and Naxioides A. Milne-Edwards, 1865 (Crustacea, Brachyura, Majoidea, Epialtidae) from Mozambique Channel, Solomon, Vanuatu and Philippine Islands, with description of a new species of Rochinia, Mémoires du Muséum national d'Histoire naturelle, 27, 204, 467-483
Résumé [+] [-]The study of a small collection of deep-water majoid crabs of the family Epialtidae brings some new data on the geographic distribution of species in the genus Rochinia A. Milne-Edwards, 1875 (R. pulchra (Miers, 1886), R. fultoni (Grant, 1905), R. aff. brevirostris (Doflein, 1904), R. aff. soela Griffin & Tranter, 1986, R. kotakae Takeda, 2001) and Naxioides taurus (Pocock, 1890). One new species, Rochinia boucheti n. sp., is described which differs from all congeners by the presence of numerous small tubercles on the carapace and its relatively short rostral spines. Males of R. kotakae are described for the first time.
Tëmkin, Ilya, Strong, Ellen E., 2013, New insights on stomach anatomy of carnivorous bivalves, Journal of Molluscan Studies, 79, 4, 332-339
doi: 10.1093/mollus/eyt031 Résumé [+] [-]Carnivory is unusual among bivalve molluscs and is limited to a few families in the distantly related orders Pectinida, Mytilida and Anomalodesmata. Despite the significance of dietary shifts in the evolution of the bivalves, the anatomy of the alimentary system, and of the gastric chamber in particular, has been described in detail for only a few carnivorous species. Here we describe the anatomy of the gastric chamber in a pectinid, Propeamussium jeffreysii, and an anomalodesmatan, Bathyneaera demistriata, expanding the known morphological disparity of the alimentary system in both groups. We found the stomachs of both to be modified to varying degrees for a carnivorous habit, with thickened, muscular walls, extensive cuticular linings, and reduced sorting areas and gastric chamber compartments (i.e. the dorsal hood, the left pouch and the food-sorting caecum). Despite some superficial similarity, each retains distinct hallmarks of their ancestry among filter-feeding relatives, allowing precise homology assessment of individual characters to differentiate between them. In addition, we found that the gastric chamber of P. jeffreysii represents an intermediate morphology between previously described P. lucidum and filter-feeding pectinids. Consequently, variation in the anatomy of the gastric chamber in Pectinida parallels a previously identified trend towards greater specialization for carnivory in the Anomalodesmata. Our results indicate that the current classification scheme of stomach types does not reflect phylogenetic affinity across the Bivalvia and highlight the need for accurate homology assessment of individual characters of the gastric chamber for inferring evolutionary relationships.
Williams, Suzanne T., Smith, L.M., Herbert, David Guy, Marshall, Bruce A., Warén, Anders, Kiel, Steffen, Dyal, Patricia, Linse, Katrin, Vilvens, Claude, Kano, Yasunori, 2013, Cenozoic climate change and diversification on the continental shelf and slope: evolution of gastropod diversity in the family Solariellidae (Trochoidea), Ecology and Evolution, 3, 4, 887-917
doi: 10.1002/ece3.513 Résumé [+] [-]Recent expeditions have revealed high levels of biodiversity in the tropical deep-sea, yet little is known about the age or origin of this biodiversity, and large-scale molecular studies are still few in number. In this study, we had access to the largest number of solariellid gastropods ever collected for molecular studies, including many rare and unusual taxa. We used a Bayesian chronogram of these deep-sea gastropods (1) to test the hypothesis that deep-water communities arose onshore, (2) to determine whether Antarctica acted as a source of diversity for deep-water communities elsewhere and (3) to determine how factors like global climate change have affected evolution on the continental slope. We show that although fossil data suggest that solariellid gastropods likely arose in a shallow, tropical environment, interpretation of the molecular data is equivocal with respect to the origin of the group. On the other hand, the molecular data clearly show that Antarctic species sampled represent a recent invasion, rather than a relictual ancestral lineage. We also show that an abrupt period of global warming during the Palaeocene Eocene Thermal Maximum (PETM) leaves no molecular record of change in diversification rate in solariellids and that the group radiated before the PETM. Conversely, there is a substantial, although not significant increase in the rate of diversification of a major clade approximately 33.7Mya, coinciding with a period of global cooling at the EoceneOligocene transition. Increased nutrients made available by contemporaneous changes to erosion, ocean circulation, tectonic events and upwelling may explain increased diversification, suggesting that food availability may have been a factor limiting exploitation of deep-sea habitats. Tectonic events that shaped diversification in reef-associated taxa and deep-water squat lobsters in central Indo-West Pacific were also probably important in the evolution of solariellids during the Oligo-Miocene.
Ahyong, Shane T., 2014, Cymonomid crabs of the MAINBAZA Expedition (Decapoda: Brachyura), Zootaxa, 3821, 3, 384-390
doi: 10.11646/zootaxa.3821.3.7 Résumé [+] [-]Cymonomid crabs collected from the Mozambique Channel off Madagascar by the 2011 MAINBAZA Expedition are reported. Two species of Cymonomus A. Milne Edwards, 1880, are represented, of which one is new to science and the other, C. valdiviae Lankester, 1903, is rediscovered, being previously known only from the holotype. Three species of Cymonomidae are now known from the western Indian Ocean, including C. trifurcus Stebbing, 1920, from South Africa.
Bieler, Rüdiger, Mikkelsen, Paula M., Collins, Timothy M., Glover, Emily A., González, Vanessa L., Graf, Daniel L., Harper, Elizabeth M., Healy, John, Kawauchi, Gisele Y., Sharma, Prashant P., Staubach, Sid, Strong, Ellen E., Taylor, John D., Tëmkin, Ilya, Zardus, John D., Clark, Stephanie, Guzmán, Alejandra, McIntyre, Erin, Sharp, Paul, Giribet, Gonzalo, 2014, Investigating the Bivalve Tree of Life – an exemplar-based approach combining molecular and novel morphological characters, Invertebrate Systematics, 28, 1, 32
doi: 10.1071/IS13010 Résumé [+] [-]To re-evaluate the relationships of the major bivalve lineages, we amassed detailed morpho-anatomical, ultrastructural and molecular sequence data for a targeted selection of exemplar bivalves spanning the phylogenetic diversity of the class. We included molecular data for 103 bivalve species (up to five markers) and also analysed a subset of taxa with four additional nuclear protein-encoding genes. Novel as well as historically employed morphological characters were explored, and we systematically disassembled widely used descriptors such as gill and stomach ‘types’. Phylogenetic analyses, conducted using parsimony direct optimisation and probabilistic methods on static alignments (maximum likelihood and Bayesian inference) of the molecular data, both alone and in combination with morphological characters, offer a robust test of bivalve relationships. A calibrated phylogeny also provided insights into the tempo of bivalve evolution. Finally, an analysis of the informativeness of morphological characters showed that sperm ultrastructure characters are among the best morphological features to diagnose bivalve clades, followed by characters of the shell, including its microstructure. Our study found support for monophyly of most broadly recognised higher bivalve taxa, although support was not uniform for Protobranchia. However, monophyly of the bivalves with protobranchiate gills was the best-supported hypothesis with incremental morphological and/or molecular sequence data. Autobranchia, Pteriomorphia, Heteroconchia, Palaeoheterodonta, Archiheterodonta, Euheterodonta, Anomalodesmata and Imparidentia new clade ( = Euheterodonta excluding Anomalodesmata) were recovered across analyses, irrespective of data treatment or analytical framework. Another clade supported by our analyses but not formally recognised in the literature includes Palaeoheterodonta and Archiheterodonta, which emerged under multiple analytical conditions. The origin and diversification of each of these major clades is Cambrian or Ordovician, except for Archiheterodonta, which diverged from Palaeoheterodonta during the Cambrian, but diversified during the Mesozoic. Although the radiation of some lineages was shifted towards the Palaeozoic (Pteriomorphia, Anomalodesmata), or presented a gap between origin and diversification (Archiheterodonta, Unionida), Imparidentia showed steady diversification through the Palaeozoic and Mesozoic. Finally, a classification system with six major monophyletic lineages is proposed to comprise modern Bivalvia: Protobranchia, Pteriomorphia, Palaeoheterodonta, Archiheterodonta, Anomalodesmata and Imparidentia.
Poore, Gary C. B., Andreakis, Nikos, 2014, More species of the Agononida incerta complex revealed by molecules and morphology (Crustacea: Decapoda: Anomura: Munididae), Zootaxa, 3860, 3, 201-225
doi: 10.11646/zootaxa.3860.3.1 Résumé [+] [-]Squat lobsters from Madagascar, Vanuatu, Papua New Guinea, Fiji, eastern Australia and French Polynesia belonging to the Agononida incerta (Henderson, 1888) species complex are described as four new species: A. madagascerta, A. polycerta, A. tasmancerta and A. vanuacerta. This brings to ten the number of species in this complex. All species are morphologically distinguishable only on the basis of the shape of the anterolateral margin of the telson and setation of the dactyli of pereopods 2–4. The morphological delineation of nine of the species and their taxonomic status are robustly supported by phylogenetic analysis of the partial 16S rDNA gene and the partial mitochondrial cytochrome oxidase subunit 1 genes, and in some cases by colour. A phylogenetic analysis of the nine species for which molecular data are available grouped the species in two clades, one of four species with facial spines on the upper surface of pereopod 4 and the other of five species lacking facial spines.
Vilvens, Claude, 2014, New species and new records of Calliostomatidae (Gastropoda: Trochoidea) from Madagascar, Novapex, 15, HS 9, 1-29
Résumé [+] [-]New records of 4 known Calliostomatidae species from Madagascar area are listed, extending the distribution area of some of them. 9 new species are described and compared with similar species: Calliostoma madatechnema n. sp., C. textor n. sp., C. parvajuba n. sp., C. hematomenon n. sp., C. subalboroseum n. sp., C. tumidosolidum n. sp., C. pyrron n. sp., C. herberti n. sp. And Carinastele wareni n. sp.
Aznar-Cormano, Laetitia, Brisset, J., Chan, Tin‐Yam, Corbari, Laure, Puillandre, Nicolas, Utgé, José, Zbinden, M., Zuccon, D., Samadi, S., 2015, An improved taxonomic sampling is a necessary but not sufficient condition for resolving inter-families relationships in Caridean decapods, Genetica, 143, 2, 195-205
doi: 10.1007/s10709-014-9807-0 Résumé [+] [-]During the past decade, a large number of multi-gene analyses aimed at resolving the phylogeneticrelationships within Decapoda. However relationships among families, and even among sub-families, remain poorly defined. Most analyses used an incomplete and opportunistic sampling of species, but also an incomplete and opportunistic gene selection among those available for Decapoda. Here we test in the Caridea if improving the taxonomic coverage following the hierarchical scheme of the classification, as it is currently accepted, provides a better phylogenetic resolution for the inter-families relationships. The rich collections of the Muse´um National d’Histoire Naturelle de Paris are used for sampling as far as possible at least two species of two different genera for each family or subfamily. All potential markers are tested over this sampling. For some coding genes the amplification success varies greatly among taxa and the phylogenetic signal is highly saturated. This result probably explains the taxon-heterogeneity among previously published studies. The analysis is thus restricted to the genes homogeneously amplified over the whole sampling. Thanks to the taxonomic sampling scheme the monophyly of most families is confirmed. However the genes commonly used in Decapoda appear non-adapted for clarifying inter-families relationships, which remain poorly resolved. Genome-wide analyses, like transcriptome-based exon capture facilitated by the new generation sequencing methods might provide a sounder approach to resolve deep and rapid radiations like the Caridea.
Dijkstra, Henk H., Maestrati, Philippe, 2015, Pectinoidea (Bivalvia: Propeamussiidae and Cyclochlamydidae) from the southwestern Indian Ocean, African Invertebrates, 56, 3, 585–628
Résumé [+] [-]Twenty-five species of Pectinoidea (24 Propeamussiidae, 1 Cyclochlamydidae) are herein listed from the Mozambique Channel, northwestern and southern Madagascar, and northeastern South Africa. New species: Propeamussium rosadoi, Parvamussium catillus, Parvamussium kilburni, Parvamussium puillandrei, Parvamussium strongae, Cyclopecten cassiculus, Cyclopecten kantori, Cyclochlamys bacachorda. New synonym: Amussium sewelli Knudsen, 1967 = Propeamussium watsoni (E.A. Smith, 1885). New records for the Mozambique Channel and northwestern Madagascar: Propeamussium andamanicum, Propeamussium arabicum, Propeamussium caducum, Propeamussium jeffreysii, Propeamussium sibogai, Propeamussium watsoni, Parvamussium formosum, Parvamussium scitulum, Parvamussium torresi, Parvamussium vesiculatum, Cyclopecten kapalae, Similipecten eous. New records for southern Madagascar: Propeamussium jeffreysii, Propeamussium sibogai, Propeamussium watsoni, Parvamussium formosum, Parvamussium scitulum, Parvamussium thyrideum, Parvamussium vesiculatum, Parvamussium vidalense, Cyclopecten kapalae, Similipecten eous. New record for South Africa: Propeamussium jeffreysii, Parvamussium formosum, Parvamussium scitulum, Cyclopecten horridus, Similipecten eous.
Fedosov, Alexander, Puillandre, Nicolas, Kantor, Yuri, Bouchet, Philippe, 2015, Phylogeny and systematics of mitriform gastropods (Mollusca: Gastropoda: Neogastropoda): Phylogeny of Mitriform Gastropods, Zoological Journal of the Linnean Society, 175, 2, 336-359
doi: 10.1111/zoj.12278 Résumé [+] [-]With about 800 Recent species, ‘miters’ are a widely distributed group of tropical and subtropical gastropods that are most diverse in the Indo-West Pacific. They include the two families Mitridae and Costellariidae, similar in shell morphology and traditionally treated as close relatives. Some genera of deep-water Ptychatractidae and Volutomitridae are close to miters in shell morphology, and the term ‘mitriform gastropods’ has been introduced to refer to Mitridae, Costellariidae, and this assortment of convergent forms. The present study aimed at the reconstruction of phylogenetic relationships of mitriform gastropods based on representative taxon sampling. Four genetic markers [cytochrome c oxidase subunit I (COI), 16S and 12S rRNA mitochondrial genes, and H3 (Histone 3) nuclear gene] were sequenced for over 90 species in 20 genera, and the molecular data set was supplemented by studies of radula morphology. Our analysis recovered Mitridae as a monophyletic group, whereas the genus Mitra was found to be polyphyletic. Of 42 mitrid species included in the analysis, 37 formed a well-supported ‘core Mitridae’ consisting of four major clades, three of them consistent with the subfamilies Cylindromitrinae, Imbricariinae, and Mitrinae, and Strigatella paupercula standing out by itself. Basal to the ‘core Mitridae’ are four minor lineages, with the genus Charitodoron recognized as sister group to all other Mitridae. The deepwater family Pyramimitridae shows a sister relationship to the Mitridae, with high support for a Pyramimitridae + Mitridae clade. Our results recover the monophyly of the Costellariidae, which form a wellsupported clade that also includes Ptychatractidae, Columbariinae, and Volutomitridae, but not Mitridae. Most derived and diverse amongst Costellariidae are species of Vexillum, characterized by a bow-shaped, multicuspidate rachidian tooth. Several previously unrecognized deep-water costellariid lineages are revealed. Their members retain some plesiomorphies – in particular a tricuspidate rachidian tooth – that makes them morphologically intermediate between ptychatractids and Vexillum. The taxa of Ptychatractidae included in the analysis are not monophyletic, but form three well-supported, unrelated groupings, corresponding respectively to Ceratoxancus + Latiromitra, Exilia, and Exiliodea. None of them shows an affinity to Pseudolividae.
Herrera, Nathanael D., ter Poorten, Jan Johan, Bieler, Rüdiger, Mikkelsen, Paula M., Strong, Ellen E., Jablonski, David, Steppan, Scott J., 2015, Molecular phylogenetics and historical biogeography amid shifting continents in the cockles and giant clams (Bivalvia: Cardiidae), Molecular Phylogenetics and Evolution, 93, 94-106
doi: 10.1016/j.ympev.2015.07.013 Résumé [+] [-]Reconstructing historical biogeography of the marine realm is complicated by indistinct barriers and, over deeper time scales, a dynamic landscape shaped by plate tectonics. Here we present the most extensive examination of model-based historical biogeography among marine invertebrates to date. We conducted the largest phylogenetic and molecular clock analyses to date for the bivalve family Cardiidae (cockles and giant clams) with three unlinked loci for 110 species representing 37 of the 50 genera. Ancestral ranges were reconstructed using the dispersal–extinction–cladogenesis (DEC) method with a time-stratified paleogeographic model wherein dispersal rates varied with shifting tectonics. Results were compared to previous classifications and the extensive paleontological record. Six of the eight prior subfamily groupings were found to be para- or polyphyletic. Cardiidae originated and subsequently diversified in the tropical Indo-Pacific starting in the Late Triassic. Eastern Atlantic species were mainly derived from the tropical Indo-Mediterranean region via the Tethys Sea. In contrast, the western Atlantic fauna was derived from Indo-Pacific clades. Our phylogenetic results demonstrated greater concordance with geography than did previous phylogenies based on morphology. Time-stratifying the DEC reconstruction improved the fit and was highly consistent with paleo-ocean currents and paleogeography. Lastly, combining molecular phylogenetics with a rich and well-documented fossil record allowed us to test the accuracy and precision of biogeographic range reconstructions.
Lin, Hsiu-Chin, Høeg, Jens T., Yusa, Yoichi, Chan, Benny K.K., 2015, The origins and evolution of dwarf males and habitat use in thoracican barnacles, Molecular Phylogenetics and Evolution, 91, 1-11
Macpherson, Enrique, Robainas-Barcia, Aymee, 2015, Species of the genus Galathea Fabricius, 1793 (Crustacea, Decapoda, Galatheidae) from the Indian and Pacific Oceans, with descriptions of 92 new species, Zootaxa, 3913, 1, 1-335
doi: 10.11646/zootaxa.3913.1.1 Résumé [+] [-]The genus Galathea is one of the most speciose and unwieldy groups in the family Galatheidae. The examination of more than 9000 specimens of 144 species collected in the Indian and Pacific Oceans using morphological and molecular characters, has revealed the existence of 92 new species. The specimens examined during this study were obtained by various French expeditions supplemented by other collections from various sources, and including the type specimens of some previously described species. Most of the new species are distinguished by subtle but constant morphological differences, which are in agreement with molecular divergences of the mitochondrial markers COI and/or 16S rRNA. Here, we describe and illustrate the new species and redescribe some previously described species for which earlier accounts are not sufficiently detailed for modern standards. Furthermore we include a dichotomous identification key to all species in the genus from the Indian and Pacific Oceans.
Yang, Chien-Hui, Sha, Zhongli, Chan, Tin-Yam, Liu, Ruiyu, 2015, Molecular phylogeny of the deep-sea penaeid shrimp genus Parapenaeus (Crustacea: Decapoda: Dendrobranchiata), Zoologica Scripta, 44, 3, 312-323
doi: 10.1111/zsc.12097 Résumé [+] [-]The commercial deep-sea penaeid shrimp genus Parapenaeus contains 15 species, three subspecies and two forms in the Indo-West Pacific and the Atlantic. Novel nucleotide sequence data from five different genes (COI, 16S, 12S, NaK and PEPCK) were collected to estimate phylogenetic relationships and taxonomic status amongst all but one subspecies in this genus. The phylogenetic results only support two of the four species groups previously proposed for this genus and indicate an evolution direction of the genital organs from simple to complex. The present results suggest that Parapenaeus originated in the shallow waters of the West Pacific with subsequent migration to the deep sea and the Atlantic. The molecular data reveal that there was probably misidentification of females between Parapenaeus australiensis and Parapenaeus ruberoculatus, with females previously assigned as P. australiensis likely being the females of P. ruberoculatus, while material identified as P. australiensis forma nodosa being the true P. australiensis females. On the other hand, Parapenaeus longipes forma denticulata truly represents a variation of the same species, while the subspecies Parapenaeus fissuroides indicus warrants a specific rank.
Bitner, Maria Aleksandra, Logan, Alan, 2016, Recent Brachiopoda from the Mozambique-Madagascar area, western Indian Ocean, Zoosystema, 38, 1, 5-41
Fraussen, Koen, Stahlschmidt, Peter, Héros, Virginie, Strong, Ellen E., Bouchet, Philippe, 2016, The extensive Indo-Pacific deep-water radiation of Manaria E. A. Smith, 1906 (Gastropoda: Buccinidae) and related genera, with descriptions of 21 new species, Mémoires du Muséum national d’Histoire naturelle, 29, 208, 363-456
Résumé [+] [-]The tropical deep-water Cominellinae commonly assigned to the genera Manaria E. A. Smith, 1906 and Eosipho Thiele, 1929 are revised. While the taxonomic details at the generic level were discussed by Kantor et al. (2013), the species level is discussed here. Twentyone new species are described: Manaria astrolabis n. sp. (French Polynesia), M. borbonica n. sp. (Réunion), M. circumsonaxa n. sp. (Papua New Guinea and the Solomons), M. corindoni n. sp. (Indonesia), M. corporosis n. sp. (the Solomons, Vanuatu, Coral Sea and New Caledonia), M. explicibilis n. sp. (Papua New Guinea and the Solomons), M. excalibur n. sp. (Indonesia and Western Australia), M. fluentisona n. sp. (the Solomons, Fiji, Wallis and Tonga), M. hadorni n. sp. (Papua New Guinea and New Caledonia), M. indomaris n. sp. (India), M. loculosa n. sp. (Fiji), M. lozoueti n. sp. (North Fiji Basin), M. terryni n. sp. (Mozambique Channel), M. tongaensis n. sp. (Tonga), M. tyrotarichoides n. sp. (Mozambique Channel), Calagrassor bacciballus n. sp. (Philippines), C. delicatus n. sp. (New Zealand), C. hespericus n. sp. (Mozambique), C. pidginoides n. sp. (Philippines, Papua New Guinea, the Solomons and Vanuatu), Enigmaticolus marshalli n. sp. (Kermadec Ridge, Monowai Caldera), and E. voluptarius n. sp. (New Caledonia). Considerable range extensions are recorded: Manaria kuroharai Azuma, 1960 is recorded from the Solomons, New Caledonia, Vanuatu and Tonga; M. brevicaudata (Schepman, 1911) is recorded from Taiwan, the Philippines, the Solomons and Fiji; and Calagrassor poppei (Fraussen, 2001) is recorded from Indonesia and the Solomons. Lathyrus jonkeri Koperberg, 1931, a fossil described from Indonesia, is recorded from the Recent fauna of Indonesia, Philippines and Fiji and is redescribed and placed in Manaria. Sipho jonkeri Koperberg, 1931, another fossil described from Indonesia in the same work, is a secondary homonym of Manaria jonkeri (Koperberg, 1931) and is renamed Manaria koperbergae nom. nov.
Galindo, Lee Ann, Puillandre, Nicolas, Utge, José, Lozouet, Pierre, Bouchet, Philippe, 2016, The phylogeny and systematics of the Nassariidae revisited (Gastropoda, Buccinoidea), Molecular Phylogenetics and Evolution, 99, 337-353
Havermans, Charlotte, 2016, Have we so far only seen the tip of the iceberg? Exploring species diversity and distribution of the giant amphipod Eurythenes, Biodiversity, 17, 1-2, 12-25
Hestetun, Jon Thomassen, Vacelet, Jean, Boury-Esnault, Nicole, Borchiellini, Carole, Kelly, Michelle, Ríos, Pilar, Cristobo, Javier, Rapp, Hans Tore, 2016, The systematics of carnivorous sponges, Molecular Phylogenetics and Evolution, 94, 327-345
- Kantor, Yuri I., Fedosov, Alexander E., Puillandre, Nicolas, Bouchet, Philippe, 2016, Integrative taxonomy approach to Indo-Pacific Olividae: new species revealed by molecular and morphological data, Ruthenica, 26, 2, 123-143
Neusser, Timea P., Jörger, Katharina M., Lodde-Bensch, Eva, Strong, Ellen E., Schrödl, Michael, 2016, The unique deep sea—land connection: interactive 3D visualization and molecular phylogeny of Bathyhedyle boucheti n. sp. (Bathyhedylidae n. fam.)—the first panpulmonate slug from bathyal zones, PeerJ, 4, e2738
Ng, Peter K.L., Castro, Peter, 2016, Revision of the family Chasmocarcinidae Serène, 1964 (Crustacea, Brachyura, Goneplacoidea), Zootaxa, 4209, 1, 1-182
Sumner-Rooney, Lauren, Sigwart, Julia D., McAfee, Jenny, Smith, Lisa, Williams, Suzanne T., 2016, Repeated eye reduction events reveal multiple pathways to degeneration in a family of marine snails, Evolution, 70, 10, 2268-2295
doi: 10.1111/evo.13022 Résumé [+] [-]Eye reduction occurs in many troglobitic, fossorial, and deep-sea animals but there is no clear consensus on its evolutionary mechanism. Given the highly conserved and pleiotropic nature of many genes instrumental to eye development, degeneration might be expected to follow consistent evolutionary trajectories in closely related animals. We tested this in a comparative study of ocular anatomy in solariellid snails from deep and shallow marine habitats using morphological, histological, and tomographic techniques, contextualized phylogenetically. Of 67 species studied, 15 lack retinal pigmentation and at least seven have eyes enveloped by surrounding epithelium. Independent instances of reduction follow numerous different morphological trajectories. We estimate eye loss has evolved at least seven times within Solariellidae, in at least three different ways: characters such as pigmentation loss, obstruction of eye aperture, and “lens” degeneration can occur in any order. In one instance, two morphologically distinct reduction pathways appear within a single genus, Bathymophila. Even amongst closely related animals living at similar depths and presumably with similar selective pressures, the processes leading to eye loss have more evolutionary plasticity than previously realized. Although there is selective pressure driving eye reduction, it is clearly not morphologically or developmentally constrained as has been suggested by previous studies.
Castelin, Magalie, Williams, Suzanne T., Buge, Barbara, Maestrati, Philippe, Lambourdière, Josie, Ozawa, Tomowo, Utge, José, Couloux, Arnaud, Alf, Axel, Samadi, Sarah, 2017, Untangling species identity in gastropods with polymorphic shells in the genus Bolma Risso, 1826 (Mollusca, Vetigastropoda), European Journal of Taxonomy, 288, 1-21
doi: 10.5852/ejt.2017.288 Résumé [+] [-]In shelled molluscs, assigning valid species names to independent evolutionary lineages can be a difficult task. Most original descriptions are based on empty shells and the high levels of variation in shape, color and pattern in some groups can make the shell a poor proxy for species-level identification. The deep-sea gastropod turbinid genus Bolma is one such example, where species-level identification based on shell characters alone is challenging. Here, we show that in Bolma both traditional and molecular taxonomic treatments are associated with a number of pitfalls that can lead to biased inferences about species diversity. Challenges derive from the few phylogenetically informative characters of shells, insufficient information provided in original descriptions and sampling artefacts, which at the molecular level in spatially fragmented organisms can blur distinctions between genetically divergent populations and separate species. Based on a comprehensive dataset combining molecular, morphological and distributional data, this study identified several cases of shell-morphological plasticity and convergence. Results also suggest that what was thought to be a set of distinct, range-restricted species corresponds instead to a smaller number of more widespread species. Overall, using an appropriate sampling design, including type localities, allowed us to assign available names to evolutionarily significant units.
Fedesov, Alexander E., Puillandre, Nicolas, Herrmann, Manfred, Dgebuadze, Polina, Bouchet, Philippe, 2017, Phylogeny, systematics, and evolution of the family Costellariidae (Gastropoda: Neogastropoda), Zoological Journal of the Linnean Society, 179, 3, 541-626
doi: 10.1111/zoj.12431 Résumé [+] [-]The neogastropod family Costellariidae is a large and successful group of carnivorous marine mollusks that encompasses about 475 living species. Costellariids are most diverse in the tropical Indo-Pacific at a depth interval of 0–200 m, where they are largely represented by numerous species commonly assigned to the genus Vexillum. The present work expands the taxon sampling of a previous phylogeny of the mitriform gastropods to resolve earlier problematic relationships, and thus establish a robust framework of the family, revise its taxonomy, and uncover major trends in the evolution of costellariid morphology. A multicuspidate rachidian is shown to have appeared at least twice in the evolutionary history of the family: it is regarded as an apomorphy of the primarily Indo-Pacific Vexillum–Austromitra–Atlantilux lineage, and has evolved independently in the Nodicostellaria–Mitromica lineage of the western hemisphere. The genera Ceratoxancus and Latiromitra are transferred from the Ptychatractidae to the Costellariidae. Tosapusia, Protoelongata, and Pusia are ranked as full genera, the latter with the three subgenera Pusia, Ebenomitra, and Vexillena. Vexillum (Costellaria) and Zierliana are treated as synonyms of Vexillum. The replacement name Suluspira is proposed for Visaya Poppe, Guillot de Suduiraut & Tagaro, 2006, non Ahyong, 2004 (Crustacea). We introduce four new genera, Alisimitra, Costapex, Turriplicifer, and Orphanopusia, and characterize their anatomy; 14 new species, mostly from deep water in the Indo-Pacific, are described in the genera Tosapusia, Alisimitra, Costapex, and Pusia. At least two species of Costapex gen. nov. have been collected from sunken wood.
Galil, Bella S., Levitt-Barmats, Ya’arit, Lubinevsky, Hadas, Yudkovsky, Yana, Paz, Guy, Rinkevich, Baruch, 2017, A record of Arcania brevifrons Chen, 1989 (Crustacea; Decapoda; Leucosiidae) from the Mediterranean coast of Israel, BioInvasions Records, 6, 3, 249-253
Houart, Roland, 2017, Siphonochelus japonicus (A. Adams, 1863) and Siphonochelus nipponensis Keen & Campbell, 1964, and Their Intricate History with the Description of a New Siphonochelus Species from Mozambique (Gastropoda: Muricidae), Venus, 75, 1-4, 27-38
Macpherson, Enrique, Rodríguez-Flores, Paula C., Machordom, Annie, 2017, New sibling species and new occurrences of squat lobsters (Crustacea, Decapoda) from the western Indian Ocean, European Journal of Taxonomy, 343, 1-61
Sabroux, Romain, Corbari, Laure, Krapp, Franz, Bonillo, Céline, Le Prieur, Stéphanie, Hassanin, Alexandre, 2017, Biodiversity and phylogeny of Ammotheidae (Arthropoda: Pycnogonida), European Journal of Taxonomy, 286, 1-33
Sanders, Malcolm T., Merle, Didier, Bouchet, Philippe, Castelin, Magalie, Beu, Alan G., Samadi, Sarah, Puillandre, Nicolas, 2017, One for each ocean: revision of the Bursa granularis (Röding, 1798) species complex (Gastropoda: Tonnoidea: Bursidae)-, Journal of Molluscan Studies, 83, 4, 384-398
Van Der Wal, Cara, Ahyong, Shane T., Ho, Simon Y.W., Lo, Nathan, 2017, The evolutionary history of Stomatopoda (Crustacea: Malacostraca) inferred from molecular data, PeerJ, 5, e3844
Verheye, Marie L., Backeljau, Thierry, D'Udekem D'Acoz, Cédric, 2017, Locked in the icehouse: Evolution of an endemic Epimeria (Amphipoda, Crustacea) species flock on the Antarctic shelf, Molecular Phylogenetics and Evolution, 114, 14-33
Fedosov, Alexander, Puillandre, Nicolas, Herrmann, Manfred, Kantor, Yuri, Oliverio, Marco, Dgebuadze, Polina, Modica, Maria Vittoria, Bouchet, Philippe, 2018, The collapse of Mitra: molecular systematics and morphology of the Mitridae (Gastropoda: Neogastropoda), Zoological Journal of the Linnean Society, 20, 1-85
Liste des documents
- Cahier(s) de campagne
- Accès restreint (1)
- Documents de communication et pédagogiques
- Poster Deep-sea marine biodiversity off Mozambique reavealed by the MAINBAZA cruise
- Dossier(s) de préparation de mission
- Accès restreint (1)
Liste des photos
|Collecte : 191 photos||Organisme : 827 photos||Substrat : 24 photos||Détritus : 2 photos||Sur le pont : 5 photos||Inconnu : 1 photo|
Liste des participants
- Barazer, Jean-François ( Genavir)
- Maître d'équipage
- Bouchet, Philippe (Malacologie, Muséum national d'Histoire naturelle)
- Chef de mission
- Chan, Tin-Yam (Carcinologie, National Taiwan Ocean University)
- Collecte - Tri - Photo
- Corbari, Laure (Carcinologie, Muséum national d'Histoire naturelle)
- Collecte - Tri
- Ramil, Fran (Systématique des hydraires, Universidade de Vigo)
- Collecte - Tri
- Ramos, Ana (Ecologue benthique, Instituto Español de Oceanografía)
- Chef de mission
- Richer de Forges, Bertrand (Carcinologie - Benthologie, Institut de Recherche pour le Développement)
- Collecte - Tri
- Rosado, José (Malacologie, Individuel)
- Collecte - Tri
- Strong, Ellen (Malacologie, National Museum of Natural History, Smithsonian Institution)
- Collecte - Tri