MD208 (Walters Shoal)
Référence sismer
http://dx.doi.org/dx.doi.org/10.17600/17002700Programme
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Date et lieu de départ
Wed Apr 26 00:00:00 CEST 2017Date et lieu d'arrivée
Thu May 18 00:00:00 CEST 2017Etape | Date de départ | Date d'arrivée | Départ | Arrivée | Navire |
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Marion Dufresne | |||||
POST CAMPAGNE | |||||
Non profond | Marion Dufresne |
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Bibliographie (11) [+] [-]
Exporter les bibliographies
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Galil B.S. 2019. Re-description and new records of a poorly known leucosiid crab, Merocryptus boletisculpta Zarenkov, 1994 (Crustacea, Decapoda, Brachyura). Western Indian Ocean Journal of Marine Science 18(2): 93-97. DOI:10.4314/wiojms.v18i2.11
Résumé [+] [-]Sixty-nine specimens of the rare leucosiid crab Merocryptus boletisculpta are reported from Walters Shoal, an isolated seamount in the southwestern Indian Ocean. The species has previously only been known from the type series collected during the R/V Vityaz 1988-1989 expedition. The species is re-described, illustrated, and colour photographs are provided.
Campagnes accessibles citées (1) [+] [-]
Codes des collections associés: IU (Crustacés) -
Houart R., Zuccon D. & Puillandre N. 2019. Description of new genera and new species of Ergalataxinae (Gastropoda: Muricidae). Novapex 20(HS 12): 1-52
Résumé [+] [-]The recent genetic analysis of the muricid subfamily Ergalataxinae has led to a better understanding of this subfamily, but some species were left without appropriate generic assignments and the classification of others required revision. This knowledge gap is partially filled herein, with new combinations and the description of three new genera. The examination of new material, along with a careful re-examination of and comparison to existing material, resulted also in the identification of nine new species. These new genera and new species are described herein, lectotypes are designated and new combinations are given. The geographical range of all the new species is provided on maps. All new species are compared with related or similar species. The radula of Morula palmeri Powell, 1967 is illustrated for the first time.
Campagnes accessibles citées (37) [+] [-]ATIMO VATAE, AURORA 2007, BATHUS 2, BENTHEDI, BERYX 11, BIOCAL, BIOMAGLO, BORDAU 2, CHALCAL 2, EBISCO, EXBODI, KANACONO, KANADEEP, KARUBENTHOS 2, LIFOU 2000, MAINBAZA, MD32 (REUNION), Restreint, MIRIKY, MUSORSTOM 6, MUSORSTOM 7, MUSORSTOM 8, MUSORSTOM 9, NORFOLK 1, NORFOLK 2, PAKAIHI I TE MOANA, PANGLAO 2004, PANGLAO 2005, PAPUA NIUGINI, SANTO 2006, SMCB, SMIB 3, SMIB 4, SMIB 5, SMIB 8, TERRASSES, Walters Shoal
Codes des collections associés: IM (Mollusques) -
Kou Q., Poore G.C.B. & Li X. 2021. A new genus and species of shrimp (Crustacea: Axiidea: Axiidae) from the Caroline Ridge, northwest Pacific. Journal of Oceanology and Limnology 39(5): 1830-1840. DOI:10.1007/s00343-021-0446-x
Résumé [+] [-]A new genus and species of axiid shrimp, Carolinaxius kexuae gen. et sp. nov. is described and illustrated based on a single specimen collected from an unnamed seamount in the Caroline Ridge, Northwest Pacific. Although both chelipeds are missing, the specimen can be distinguished from other axiid genera by a combination of characteristics: narrowly triangular rostrum; median carina and lateral gastric carina each with one prominent tooth; submedian gastric carinae converging posteriorly, with teeth; cornea weakly pigmented, eyestalk with acute distomesial tooth on dorsal surface; male pleopod 1 two-articled; pleopod 2 with appendix interna and appendix masculina; pleopods 3–5 with appendix interna. The molecular phylogeny suggests the new genus is most closely related to another recently described genus living inside hexactinellid sponges on seamounts in the Indian Ocean, Montanaxius Dworschak, 2016. However, it differs from Montanaxius in the shape of the rostrum, the arrangement of teeth on the carapace, and the shape of the eyestalk. Besides, the significant molecular differences support the two belonging to different genera.
Campagnes accessibles citées (4) [+] [-]
Codes des collections associés: IU (Crustacés) -
Lunina A.A., Kulagin D.N. & Vereshchaka A.L. 2021. Phylogenetic revision of the shrimp genera Ephyrina , Meningodora and Notostomus (Acanthephyridae: Caridea). Zoological Journal of the Linnean Society 193(3): 1002-1019. DOI:10.1093/zoolinnean/zlaa161
Résumé [+] [-]Abstract The shrimp genera Ephyrina, Meningodora and Notostomus have an unusual carapace strengthened with carinae and a half-serrated mandible, which may suggest a possible monophyly of this group. Here we test this hypothesis and present the first phylogenetic study of these genera based on 95 morphological characters (all valid species coded) and six molecular markers (71% of valid species sequenced). Representatives of all genera of Oplophoridae (sister to Acanthephyridae) were outgroups, 32 species belonging to all genera and potentially different clades of Acanthephyridae were ingroups. Both morphological and molecular analyses retrieve trees with similar topology. Our results reject the hypothesis of a clade formed by Ephyrina + Meningodora + Notostomus. We show that Ephyrina and Notostomus are monophyletic, both on morphological and on molecular trees, Meningodora gains support only on morphological trees. Evolutionary traits in the Ephyrina and Meningodora + Notostomus clades are different. Synapomorphies are mostly linked to adaptations to forward motion in Ephyrina (oar-like meri and ischia of pereopods, stempost-like rostrum) and to progressive strengthening of the carapace and pleon in Meningodora and Notostomus (net of sharp carinae). Unusual mandibles evolved in the clades independently and represent convergent adaptations to feeding on gelatinous organisms.
Campagnes accessibles citées (14) [+] [-]ATIMO VATAE, Restreint, BIOPAPUA, Restreint, GUYANE 2014, KAVIENG 2014, MAINBAZA, MD20 (SAFARI), MIRIKY, MUSORSTOM 2, MUSORSTOM 3, PAPUA NIUGINI, SALOMONBOA 3, Walters Shoal
Codes des collections associés: IU (Crustacés) -
Mah C.L. 2018. New genera, species and occurrence records of Goniasteridae (Asteroidea; Echinodermata) from the Indian Ocean. Zootaxa 4539(1): 1. DOI:10.11646/zootaxa.4539.1.1
Résumé [+] [-]Modern goniasterids are the most numerous of living asteroids in terms of described genera and species and they have important ecological roles from shallow to deep-water marine habitats. Recent MNHN expeditions and historical collections in the USNM have resulted in the discovery of 18 new species, three new genera and multiple new occurrence records from the western Indian Ocean region including Madagascar, Glorioso and Mayotte islands, Walters Shoal, South Africa, and Somalia. This report provides the first significant contribution to knowledge of deep-sea Asteroidea from the Indian Ocean since the late 20th Century. Several deep-sea species, previously known from the North Pacific are now reported from the western Indian Ocean. Gut contents from Stellaster and Ogmaster indicate deposit feeding. Feeding modes of this and other deep-sea species are discussed. Comments are made on fossil members of included taxa. A checklist of Indian Ocean Goniasteridae is also included.
Campagnes accessibles citées (12) [+] [-]ATIMO VATAE, BIOMAGLO, Restreint, Restreint, MAINBAZA, MD32 (REUNION), MIRIKY, NORFOLK 2, Restreint, Restreint, SALOMONBOA 3, Walters Shoal
Codes des collections associés: IE (Échinodermes) -
Poore G.C. 2020. Axiid and micheleid lobsters from Indo-West Pacific deep-sea environments (Crustacea: Decapoda: Axiidea: Axiidae, Micheleidae), Deep-Sea Crustaceans from Papua New Guinea - Tropical Deep-Sea Benthos 31. Mémoires du Muséum national d'histoire naturelle Tome 213. Publications scientifiques du Muséum national d'histoire naturelle, Paris:259-368, ISBN:978-2-85653-913-2
Résumé [+] [-]Eight species of deep-water porter crabs of the family Homolidae are recorded from Papua New Guinea from three MNHN-led cruises to these waters: Homola orientalis Henderson, 1888, Homola coriolisi Guinot & Richer de Forges, 1995, Homolomannia sibogae Ihle, 1912, Homolomannia occlusa Guinot & Richer de Forges, 1981, Paromolopsis boasi Wood-Mason in Wood-Mason & Alcock, 1891, Lamoha woodmasoni n. sp., Ihlopsis multispinosa (Ihle, 1912) and Latreillopsis gracilipes Guinot & Richer de Forges, 1981. Most are new records for the country, Lamoha woodmasoni n. sp. appears to be the Pacific sister species of the Indian Ocean L. longipes (Alcock & Anderson, 1899). The old records of the latter species from the Solomon Islands are now referred to the new species. The taxonomy of the other species is also discussed. Saint Laurent, 1989: Platyaxius Sakai, 1994; Albatrossaxius Sakai, 2011; Platyaxiopsis Sakai, 2011 and Newzealandaxius Sakai, 2011. Calaxius tungi Zhong, 2000 is synonymised with C. sibogae (De Man, 1925), Eiconaxius bandaensis Sakai, 2011 is synonymised with E. sibogae (De Man, 1925) and Tethisea mindoro Poore, 1997 is synonymised with T. indica Poore, 1994. Acanthaxius clevai Ngoc-Ho, 2006 is transferred to Pillsburyaxius, now Pillsburyaxius clevai (Ngoc-Ho, 2006), new combination.
Campagnes accessibles citées (27) [+] [-]BATHUS 1, BIOCAL, BIOMAGLO, BIOPAPUA, BOA1, BORDAU 2, Restreint, Restreint, EBISCO, KARUBAR, KAVIENG 2014, LITHIST, MADEEP, MAINBAZA, MUSORSTOM 1, MUSORSTOM 10, MUSORSTOM 2, MUSORSTOM 3, MUSORSTOM 5, MUSORSTOM 6, MUSORSTOM 8, NORFOLK 1, PAPUA NIUGINI, SALOMON 1, SALOMONBOA 3, VOLSMAR, Walters Shoal
Codes des collections associés: IU (Crustacés) -
Rodríguez-flores P., Macpherson E., Schnabel K., Ahyong S., Corbari L. & Machordom A. 2022. Depth as a driver of evolution and diversification of ancient squat lobsters (Decapoda, Galatheoidea, Phylladiorhynchus). Molecular Phylogenetics and Evolution 171: 107467. DOI:10.1016/j.ympev.2022.107467
Campagnes accessibles citées (34) [+] [-]ATIMO VATAE, BENTHAUS, BIOMAGLO, BIOPAPUA, CALSUB, CHALCAL 1, CHALCAL 2, CORAIL 2, EBISCO, EXBODI, KANACONO, KANADEEP, KARUBAR, KAVIENG 2014, KOUMAC 2.3, LAGON, LIFOU 2000, MD08 (BENTHOS), MD32 (REUNION), MONTROUZIER, MUSORSTOM 1, MUSORSTOM 2, MUSORSTOM 3, MUSORSTOM 4, MUSORSTOM 6, MUSORSTOM 8, MUSORSTOM 9, PAKAIHI I TE MOANA, PALEO-SURPRISE, PAPUA NIUGINI, RAPA 2002, SANTO 2006, TARASOC, Walters Shoal
Codes des collections associés: IU (Crustacés) -
Rodríguez-flores P.C., Macpherson E. & Machordom A. 2021. Revision of the squat lobsters of the genus Phylladiorhynchus Baba, 1969 (Crustacea, Decapoda, Galatheidae) with the description of 41 new species. Zootaxa 5008(1): 1-159. DOI:10.11646/zootaxa.5008.1.1
Résumé [+] [-]The genus Phylladiorhynchus Baba, 1969 currently contains 11 species, all occurring in the shallow waters and on the continental shelf of the Indian and Pacific oceans. Recent expeditions in these oceans have resulted in the collection of numerous new specimens in need of analysis. We have studied this material using an integrative approach analysing both morphological and molecular (COI and 16S) characters. We describe 41 new species and resurrect three old names: P. integrus (Benedict, 1902) and P. lenzi (Rathbun, 1907), previously synonymized with P. pusillus (Henderson, 1885), and P. serrirostris (Melin, 1939), previously synonymized with P. integrirostris (Dana, 1852). Most species of the genus are described and illustrated. Some species are barely discernible on the basis of morphological characters but are highly divergent genetically. Species of Phylladiorhynchus are mainly distinguishable by the number of epigastric spines and lateral spines of the carapace, the shape and the armature of the rostrum, the number and pattern of the ridges on the carapace and pleon, the shape of thoracic sternite 3 and the armature of the P2–4 dactyli. A dichotomous identification key to all species is provided.
Campagnes accessibles citées (35) [+] [-]ATIMO VATAE, BENTHAUS, BIOMAGLO, BIOPAPUA, CALSUB, CHALCAL 1, CHALCAL 2, CORAIL 2, EBISCO, EXBODI, KANACONO, KANADEEP, KARUBAR, KAVIENG 2014, KOUMAC 2.1, KOUMAC 2.3, LAGON, LIFOU 2000, MD08 (BENTHOS), MD32 (REUNION), MONTROUZIER, MUSORSTOM 1, MUSORSTOM 2, MUSORSTOM 3, MUSORSTOM 4, MUSORSTOM 6, MUSORSTOM 8, MUSORSTOM 9, PAKAIHI I TE MOANA, PALEO-SURPRISE, PAPUA NIUGINI, RAPA 2002, SANTO 2006, TARASOC, Walters Shoal
Codes des collections associés: IU (Crustacés) -
Siegwald J., Oskars T.R., Kano Y. & Malaquias M.A.E. 2022. A global phylogeny of the deep-sea gastropod family Scaphandridae (Heterobranchia: Cephalaspidea): Redefinition and generic classification. Molecular Phylogenetics and Evolution 169: 107415. DOI:10.1016/j.ympev.2022.107415
Résumé [+] [-]We present the most comprehensive phylogeny of a globally distributed deep-sea group of gastropods published to date including over 80% of the recognized diversity of the family Scaphandridae. The definition and taxo nomic composition of the Scaphandridae has been hampered by the lack of a sound phylogenetic framework and definition of synapomorphic traits. We used a combination of molecular phylogenetics (Bayesian Inference and Maximum Likelihood) based on five gene markers (cytochrome c oxidase subunit I, 12S rRNA, 16S rRNA, 18S rRNA, and 28S rRNA) and morpho-anatomical characters to redefine the Scaphandridae and its genera. A new classification is proposed with the three genera Nipponoscaphander, Sabatia, and Scaphander. Main differences between genera lie on the shells (shape, parietal callus, spire) and male reproductive system (prostate). The species Hamineobulla kawamurai is reassigned to the closely related family Eoscaphandridae, currently defined mostly based on pleisiomorphic traits. Biogeographically the genus Nipponoscaphander is restricted to the IndoWest Pacific; Sabatia is mostly circumscribed to the Indo-West Pacific, but has one lineage present in the north Atlantic Ocean. Polyphyly across ocean realms prevails in the specious and globally distributed genus Scaphander with multiple speciation events between Indo-Pacific and Atlantic lineages but also with several episodes of cladogenesis within realms. Two rare cases of species with a broad distribution spanning the Indo-West Pacific and Atlantic realms are confirmed (S. meridionalis and S. nobilis)
Campagnes accessibles citées (17) [+] [-]ATIMO VATAE, AURORA 2007, BIOPAPUA, CONCALIS, EBISCO, EXBODI, KARUBENTHOS 2, KAVIENG 2014, MADEEP, MAINBAZA, PANGLAO 2004, PANGLAO 2005, PAPUA NIUGINI, SALOMON 2, SALOMONBOA 3, TARASOC, Walters Shoal
Codes des collections associés: IM (Mollusques) -
Vereshchaka A., Kulagin D. & Lunina A. 2021. A New Shrimp Genus (Crustacea: Decapoda) from the Deep Atlantic and an Unusual Cleaning Mechanism of Pelagic Decapods. Diversity 13(11): 536. DOI:10.3390/d13110536
Résumé [+] [-]The deep sea is the largest biome on Earth and hosts the majority of as yet undescribed species; description of these may trigger a new mindset about evolution and function of characters. We describe and diagnose a new genus and species Sclerodora crosnieri sp. nov. belonging to the superfamily Oplophoroidea. We examined and coded 81 characters for morphological analyses and used four gene markers for molecular analyses involving the new taxon and representatives of all other genera of Oplophoroidea. Retrieved morphological and molecular trees were similar and suggested that the new genus is a sister group to Hymenodora and both form a clade sister to the rest of Acanthephyridae. We provide an amended key to all genera of Oplophoroidea. We found an unusual chelate structure on the dactyl of the fifth pereopod, tested and confirmed a hypothesis that this structure is common for the whole family Acanthephyridae. We suggest that this derived structure is linked to an active cleaning of branchia—a function associated with chelipeds in some other carid shrimps. Convergent chelate structures are likely efficient for cleaning branchia, whichever appendage is adapted for these functions. In Oplophoridae (sister to Acanthephyridae), cleaning function is carried out by well-developed epipods.
Campagnes accessibles citées (6) [+] [-]
Codes des collections associés: IU (Crustacés) -
Vereshchaka A., Kulagin D. & Lunina A. 2022. Discovery of a New Species Provides a Deeper Insight into Taxonomic Grouping of the Deep-Sea Genus Acanthephyra (Crustacea: Decapoda). Diversity 14(11): 907. DOI:10.3390/d14110907
Résumé [+] [-]We describe and diagnose a new species of Acanthephyra (Acanthephyridae: Caridea: Decapoda) and provide an amended key to all species of the genus. In order to assess the taxonomic position of the new species, we examined and coded 55 characters in available specimens of Acanthephyra and ran morphological phylogenetic analyses. We also used a COI gene marker for molecular analyses of the new species and other available specimens of Acanthephyra. Both analyses retrieved an unexpected grouping of species that contradicted a recently accepted morphological grouping. We tested a new, quantitative, set of characters and found that three of them may explain the molecular grouping of the genus. These characters are linked to: (1) proportions of the 6th pleonic somite, (2) length of the same against carapace length, and (3) length of the same against length of two preceding somites. We suggest that these characters mirror evolutionary traits in Acanthephyra and discuss their possible adaptive sense.
Campagnes accessibles citées (14) [+] [-]Restreint, ATIMO VATAE, BENTHAUS, BIOPAPUA, GUYANE 2014, MAINBAZA, MD20 (SAFARI), MD28 (SAFARI II), MIRIKY, MUSORSTOM 2, MUSORSTOM 3, MUSORSTOM 9, SALOMONBOA 3, Walters Shoal
Codes des collections associés: IU (Crustacés)
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Détail :
- Marani, Gilberto ( Muséum national d'Histoire naturelle)
- Numérisation
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Liste des stations
Taxons par accès
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