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Criscione F., Hallan A., Fedosov A. & Puillandre N. 2021. Deep Downunder: Integrative taxonomy of Austrobela , Spergo , Theta and Austrotheta (Gastropoda: Conoidea: Raphitomidae) from the deep sea of Australia. Journal of Zoological Systematics and Evolutionary Research 59(8): 1718-1753. DOI:10.1111/jzs.12512
Résumé [+]
[-]
Recent sampling efforts in the deep seas of southern and eastern Australia have generated a wealth of DNA-suitable material of neogastropods of the family Raphitomidae. Based on this material, a molecular phylogeny of the family has revealed a considerable amount of genus and species level lineages previously unknown to science. These taxa are now the focus of current integrative taxonomic research. As part of this ongoing investigation, this study focuses on the genera Austrobela, Austrotheta (both Criscione, Hallan, Puillandre & Fedosov, 2020), Spergo Dall, 1895 and Theta Clarke, 1959. We subjected a comprehensive mitochondrial DNA dataset of representative deep-sea raphitomids to Automatic Barcode Gap Discovery, which recognized 24 primary species hypotheses (PSHs). Following additional evaluation of shell and radular features, as well as examination of geographic and bathymetric ranges, 18 of these PSHs were converted to secondary species hypotheses (SSHs). Based on the evidence available, the most likely speciation mechanisms involved were evaluated for each pair of sister SSHs, including niche partitioning. Eleven SSHs were recognized as new and their systematic descriptions are provided herein. Of these, four were attributed to Austrobela, one to Austrotheta, four to Spergo and two to Theta. While all new species are endemic to Australian waters, other species studied herein exhibit wide Indo-Pacific distributions, adding to the growing body of evidence suggesting that wide geographic ranges in deep-sea Raphitomidae are more common than previously assumed.
Campagnes accessibles citées (19) [+]
[-]
AURORA 2007,
BATHUS 3,
BIOMAGLO,
BIOPAPUA,
CHALCAL 2,
CONCALIS,
EBISCO,
KANADEEP,
KARUBAR,
KARUBENTHOS 2,
NORFOLK 2,
NanHai 2014,
PAPUA NIUGINI,
SALOMON 2,
TAIWAN 2013,
Restreint,
TARASOC,
TERRASSES,
ZhongSha 2015
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Criscione F., Hallan A., Puillandre N. & Fedosov A. 2021. Snails in depth: integrative taxonomy of Famelica, Glaciotomella and Rimosodaphnella (Conoidea: Raphitomidae) from the deep sea of temperate Australia. Invertebrate Systematics 35(8): 940-962. DOI:10.1071/IS21008
Résumé [+]
[-]
The deep sea of temperate south-eastern Australia appears to be a ‘hotspot’ for diversity and endemism of conoidean neogastropods of the family Raphitomidae. Following a series of expeditions in the region, a considerable amount of relevant DNA-suitable material has become available. A molecular phylogeny based on this material has facilitated the identification of diagnostic morphological characters, allowing the circumscription of monophyletic genera and the introduction of several new genus-level taxa. Both named and new genera are presently being investigated through integrative taxonomy, with the discovery of a significant number of undescribed species. As part of this ongoing investigation, our study focuses on the genera Famelica Bouchet & Warén, 1980, Glaciotomella Criscione, Hallan, Fedosov & Puillandre, 2020 and Rimosodaphnella Cossmann, 1914. We subjected a comprehensive mitochondrial DNA dataset of representative deep-sea raphitomids to the species delimitation methods ABGD and ASAP that recognised 18 and 15 primary species hypotheses (PSHs) respectively. Following additional evaluation of shell and radular features, and examination of geographic and bathymetric ranges, nine of these PSHs were converted to secondary species hypotheses (SSHs). Four SSHs (two in Famelica and two in Rimosodaphnella) were recognised as new, and formal descriptions are provided herein.
Campagnes accessibles citées (14) [+]
[-]
AURORA 2007,
BIOPAPUA,
BOA1,
EXBODI,
KANACONO,
KAVIENG 2014,
MAINBAZA,
PANGLAO 2004,
PANGLAO 2005,
PAPUA NIUGINI,
SALOMON 2,
SALOMONBOA 3,
TARASOC,
ZhongSha 2015
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Fassio G., Modica M.V., Mary L., Zaharias P., Fedosov A.E., Gorson J., Kantor Y.I., Holford M. & Puillandre N. 2019. Venom Diversity and Evolution in the Most Divergent Cone Snail Genus Profundiconus. Toxins 11(11): 623. DOI:10.3390/toxins11110623
Résumé [+]
[-]
Profundiconus is the most divergent cone snail genus and its unique phylogenetic position, sister to the rest of the family Conidae, makes it a key taxon for examining venom evolution and diversity. Venom gland and foot transcriptomes of Profundiconus cf. vaubani and Profundiconus neocaledonicus were de novo assembled, annotated, and analyzed for differential expression. One hundred and thirty-seven venom components were identified from P. cf. vaubani and 82 from P. neocaledonicus, with only four shared by both species. The majority of the transcript diversity was composed of putative peptides, including conotoxins, profunditoxins, turripeptides, insulin, and prohormone-4. However, there were also a significant percentage of other putative venom components such as chymotrypsin and L-rhamnose-binding lectin. The large majority of conotoxins appeared to be from new gene superfamilies, three of which are highly different from previously reported venom peptide toxins. Their low conotoxin diversity and the type of insulin found suggested that these species, for which no ecological information are available, have a worm or molluscan diet associated with a narrow dietary breadth. Our results indicate that Profundiconus venom is highly distinct from that of other cone snails, and therefore important for examining venom evolution in the Conidae family.
Campagnes accessibles citées (1) [+]
[-]
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Fassio G., Russini V., Buge B., Schiaparelli S., Modica M.V., Bouchet P. & Oliverio M. 2020. High cryptic diversity in the kleptoparasitic genus Hyalorisia Dall, 1889 (Littorinimorpha: Capulidae) with the description of nine new species from the Indo-West Pacific. Journal of Molluscan Studies 86(4): 401-421. DOI:10.1093/mollus/eyaa028
Résumé [+]
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Species in the family Capulidae (Littorinimorpha: Capuloidea) display a wide range of shell morphologies. Several species are known to live in association with other benthic invertebrates—mostly bivalves and sabellid worms, but also other gastropods—and are believed to be kleptoparasitic filter feeders that take advantage of the water current produced by the host. This peculiar trophic ecology, implying a sedentary lifestyle, has resulted in highly convergent shell forms. This is particularly true for the genus Hyalorisia Dall, 1889, which occurs in deep water in the Caribbean and Indo-West Pacific provinces, with two nominal species recognized so far. Combining morphological, ecological and molecular data, we assessed the diversity of the genus, its phylogenetic position inside the family and its association with its bivalve host, the genus Propeamussium de Gregorio, 1884 (Pectinoidea), resulting in the description of nine new cryptic species. When sympatric, species of Hyalorisia are associated with different host species, but the same species of Propeamussium may be the host of several allopatric species of Hyalorisia.
Campagnes accessibles citées (17) [+]
[-]
AURORA 2007,
CONCALIS,
CORSICABENTHOS 1,
EBISCO,
KANACONO,
KANADEEP,
KARUBENTHOS 2,
KAVIENG 2014,
KOUMAC 2.3,
MADEEP,
MAINBAZA,
MIRIKY,
NanHai 2014,
PANGLAO 2004,
PANGLAO 2005,
SALOMON 2,
ZhongSha 2015
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Fassio G., Russo P., Bonomolo G., Fedosov A.E., Modica M., Nocella E. & Oliverio M. 2022. A molecular framework for the systematics of the Mediterranean spindle-shells (Gastropoda, Neogastropoda, Fasciolariidae, Fusininae). Mediterranean Marine Science 23(3): 623-636. DOI:10.12681/mms.29935
Résumé [+]
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A remarkably high diversity of native small spindle-shells (Gastropoda, Fasciolariidae, Fusininae) has been recently inventoried
in the Mediterranean Sea, with 23 species identified based on shell morphology. They have almost invariably been classified
in the genus Fusinus, and a few of them recently moved to other genera (Aptyxis Troschel 1868, Aegeofusinus Russo, 2017 and
Gracilipurpura Jousseaume, 1880), mostly based on the sole shell features. We have reconstructed a molecular phylogenetic
framework for the Mediterranean Fusininae, focusing on native species representative of the genus-level taxa. Our results confirmed
that Fusinus s.s. (type species Murex colus Linnaeus, 1758) should be restricted to a group of large-shelled species from the
Indo-West Pacific and does not fit any of the small-shelled Mediterranean fusinines. We confirm that Murex syracusanus Linnaeus,
1758 represents a distinct lineage, and show that for all the remaining species the pattern is suggestive of a single monophyletic
radiation of small Mediterranean fusinines, for which the name Pseudofusus Monterosato, 1884 must be used
Campagnes accessibles citées (23) [+]
[-]
ATIMO VATAE,
AURORA 2007,
CONCALIS,
Restreint,
EBISCO,
EXBODI,
GUYANE 2014,
KANACONO,
KARUBENTHOS 2,
KARUBENTHOS 2012,
KAVIENG 2014,
MIRIKY,
NanHai 2014,
PAKAIHI I TE MOANA,
PANGLAO 2004,
PANGLAO 2005,
PAPUA NIUGINI,
SALOMON 2,
SALOMONBOA 3,
SANTO 2006,
TARASOC,
TERRASSES,
Restreint
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Fassio G., Stefani M., Russini V., Buge B., Bouchet P., Treneman N., Malaquias M.A.E., Schiaparelli S., Modica M.V. & Oliverio M. 2022. Neither slugs nor snails: a molecular reappraisal of the gastropod family Velutinidae. Zoological Journal of the Linnean Society: 1-41. DOI:10.1093/zoolinnean/zlac091
Résumé [+]
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Abstract
The systematics of the marine mollusc family Velutinidae has long been neglected by taxonomists, mainly because their often internal and fragile shells offer no morphological characters. Velutinids are usually undersampled owing to their cryptic mantle coloration on the solitary, social or colonial ascidians on which they feed and lay eggs. In this study, we address the worldwide diversity and phylogeny of Velutinidae based on the largest molecular dataset (313 specimens) to date, accounting for > 50% of the currently accepted genera, coupled with morphological and ecological data. Velutinids emerge as a diverse group, encompassing four independent subfamily-level lineages, two of which are newly described herein: Marseniopsinae subfam. nov. and Hainotinae subfam. nov. High diversity was found at genus and species levels, with two newly described genera (Variolipallium gen. nov. and Pacifica gen. nov.) and ≥ 86 species in the assayed dataset, 58 of which are new to science (67%). Velutinidae show a remarkable morphological plasticity in shell morphology, mantle extension and chromatic patterns. This variability is likely to be the result of different selective forces, including habitat, depth and trophic interactions.
Campagnes accessibles citées (23) [+]
[-]
ATIMO VATAE,
BIOMAGLO,
BIOPAPUA,
CEAMARC-AA,
CORSICABENTHOS 1,
CORSICABENTHOS 2,
CORSICABENTHOS 3,
GUYANE 2014,
ILES DU SALUT,
KANACONO,
KANADEEP 2,
KARUBENTHOS 2,
KAVIENG 2014,
KOUMAC 2.1,
KOUMAC 2.3,
MADEEP,
MADIBENTHOS,
PANGLAO 2004,
PAPUA NIUGINI,
SAKIZAYA 2019,
SANTO 2006,
Tuhaa Pae 2013,
ZhongSha 2015
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Fassio G., Bouchet P., Oliverio M. & Strong E.E. 2022. Re-evaluating the case for poecilogony in the gastropod Planaxis sulcatus (Cerithioidea, Planaxidae). BMC Ecology and Evolution 22(1): 13. DOI:10.1186/s12862-022-01961-7
Résumé [+]
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Background: Planaxis sulcatus has been touted as a textbook example of poecilogony, with members of this wideranging Indo-Pacific marine gastropod said to produce free-swimming veligers as well as brooded juveniles. A recent paper by Wiggering et al. (BMC Evol Biol 20:76, 2020) assessed a mitochondrial gene phylogeny based on partial COI and 16S rRNA sequences for 31 individuals supplemented by observations from the brood pouch of 64 mostly unsequenced individuals. ABGD and bGYMC supported three reciprocally monophyletic clades, with two distributed in the Indo-Pacific, and one restricted to the northern Indian Ocean and Red Sea. Given an apparent lack of correlation between clade membership and morphological differentiation or mode of development, the reported 3.08% maximum K2P model-corrected genetic divergence in COI among all specimens was concluded to represent population structuring. Hence, the hypothesis that phylogenetic structure is evidence of cryptic species was rejected and P. sulcatus was concluded to represent a case of geographic poecilogony.
Results: Our goal was to reassess the case for poecilogony in Planaxis sulcatus with a larger molecular dataset and expanded geographic coverage. We sequenced an additional 55 individuals and included published and unpublished sequence data from other sources, including from Wiggering et al. Our dataset comprised 108 individuals (88 COI, 81 16S rRNA) and included nine countries unrepresented in the previous study. The expanded molecular dataset yielded a maximum K2P model-corrected genetic divergence among all sequenced specimens of 12.09%. The value of 3.08% erroneously reported by Wiggering et al. is the prior maximal distance value that yields a single-species partition in ABGD, and not the maximum K2P intraspecific divergence that can be calculated for the dataset. The bGMYC analysis recognized between two and six subdivisions, while the best-scoring ASAP partitions recognized two, four, or five subdivisions, not all of which were robustly supported in Bayesian and maximum likelihood phylogenetic analyses of the concatenated and single gene datasets. These hypotheses yielded maximum intra-clade genetic distances in COI of 2.56–6.19%, which are more consistent with hypothesized species-level thresholds for marine caenogastropods.
Conclusions: Based on our analyses of a more comprehensive dataset, we conclude that the evidence marshalled by Wiggering et al. in support of Planaxis sulcatus comprising a single widespread, highly variable species with geographic poecilogony is unconvincing and requires further investigation in an integrative taxonomic framework.
Campagnes accessibles citées (5) [+]
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Fassio g., Bouchet p., Lozouet p., Modica m.v., Russini v., Schiaparelli s. & Oliverio m. 2021. Becoming a limpet: An ‘intermittent limpetization’ process driven by host features in the kleptoparasitic gastropod family Capulidae. Molecular Phylogenetics and Evolution 155: 107014. DOI:https://doi.org/10.1016/j.ympev.2020.107014
Campagnes accessibles citées (3) [+]
[-]
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Fedosov A.E. & Puillandre N. 2020. Integrative taxonomy of the Clavus canalicularis species complex (Drilliidae, Conoidea, Gastropoda) with description of four new species. Molluscan Research 40(3): 251-266. DOI:10.1080/13235818.2020.1788695
Résumé [+]
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The conoidean family Drilliidae Olsson, 1964 is a species-rich lineage of marine gastropods, showing a high degree of diversification in comparison to other families of Conoidea. Despite intensive molecular phylogenetic studies during the last decade that have led to notable rearrangements of conoidean systematics, the genus- and species-level taxonomy of Drilliidae has not thus far been affected and remains entirely based on shell features. In the current study we revisit species delimitation in a morphological cluster of species from the Indo-Pacific referred to as the Clavus canalicularis complex, using an integrative taxonomy approach. The species in the complex possess robust thick-walled shells typically over 15 mm in height with sculpture of prominent rounded nodules located at the whorl’s shoulder, sometimes sharp and squamiform, or producing long spines. We find that in addition to five known species, the complex comprises four new species. These are described as Clavus brianmayi n. sp. (New Caledonia), Clavus davidgilmouri n. sp. (the Philippines), Clavus andreolbrichi n. sp. (Vanuatu and New Ireland) and Clavus kirkhammetti n. sp. (Madagascar). Clavus exasperatus (Reeve, 1843), which was previously considered widely distributed in IndoPacific, is shown to be confined to the western Indian Ocean.
Campagnes accessibles citées (5) [+]
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Fedosov A., Zaharias P. & Puillandre N. 2021. A phylogeny-aware approach reveals unexpected venom components in divergent lineages of cone snails. Proceedings of the Royal Society B: Biological Sciences 288(1954): 20211017. DOI:10.1098/rspb.2021.1017
Résumé [+]
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Marine gastropods of the genus Conus are renowned for their remarkable diversity and deadly venoms. While Conus venoms are increasingly well studied for their biomedical applications, we know surprisingly little about venom composition in other lineages of Conidae. We performed comprehensive venom transcriptomic profiling for Conasprella coriolisi and Pygmaeconus traillii, first time for both respective genera. We complemented referencebased transcriptome annotation by a de novo toxin prediction guided by phylogeny, which involved transcriptomic data on two additional ‘divergent’ cone snail lineages, Profundiconus, and Californiconus. We identified toxin clusters (SSCs) shared among all or some of the four analysed genera based on the identity of the signal region—a molecular tag present in toxins. In total, 116 and 98 putative toxins represent 29 and 28 toxin gene superfamilies in Conasprella and Pygmaeconus, respectively; about quarter of these only found by semi-manual annotation of the SSCs. Two rare gene superfamilies, originally identified from fish-hunting cone snails, were detected outside Conus rather unexpectedly, so we further investigated their distribution across Conidae radiation. We demonstrate that both these, in fact, are ubiquitous in Conidae, sometimes with extremely high expression. Our findings demonstrate how a phylogeny-aware approach circumvents methodological caveats of similarity-based transcriptome annotation
Campagnes accessibles citées (2) [+]
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Fedosov A.E., Caballer gutierrez M., Buge B., Sorokin P.V., Puillandre N. & Bouchet P. 2019. Mapping the missing branch on the neogastropod tree of life: molecular phylogeny of marginelliform gastropods. Journal of Molluscan Studies 85(4): 440–452. DOI:10.1093/mollus/eyz028
Résumé [+]
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Marginelliform gastropods are a heterogeneous and diverse group of molluscs encompassing over 1,600 living species, among which are the smallest known neogastropods. The relationships of marginelliform gastropods within the order Neogastropoda are controversial, and the monophyly of the two marginelliform families the Marginellidae J. Fleming, 1828 and the Cystiscidae Stimpson, 1865, remains unconfirmed. DNA sequence data have never been used to assess the relationships of the marginelliform gastropods, making this group the only major branch missing in our current understanding of the neogastropod tree of life. Here we report results of the first multilocus phylogenetic analysis of marginelliform gastropods, which is based on a dataset comprising 63 species (20 genera) of Marginellidae and Cystiscidae, and a wide range of neogastropod lineages. The Marginellidae and Cystiscidae form a moderately supported clade that is sister to the family Volutidae. Marginellona gigas appears to be sister to all other marginelliforms. The subfamily Marginellinae was recovered as a well-supported clade, and good resolution of this part of the tree makes it possible to propose amendments to the family-level classification of the group. The relationship between Granulina and other marginelliforms could not be resolved and requires further study. Due to poor resolution of basal relationships within the Marginellidae–Cystiscidae clade, the monophyly of the Cystiscidae was neither confirmed nor convincingly rejected. The shell morphology of most marginellid and cystiscid genera is taxonomically not very informative but, nevertheless, of the traditionally recognized genera only Gibberula and Dentimargo were shown to be polyphyletic. Although a comprehensive systematic revision of the group requires more extensive taxonomic sampling (e.g. with better representation of the type species of nominal genus-group names), our results support the superfamily Volutoidea, comprising four families (Volutidae, Cystiscidae, Marginellidae and Marginellonidae), with the placement of the Granulinidae uncertain for the time being.
Campagnes accessibles citées (15) [+]
[-]
ATIMO VATAE,
Restreint,
DongSha 2014,
EXBODI,
GUYANE 2014,
ILES DU SALUT,
INHACA 2011,
KANACONO,
KARUBENTHOS 2,
KAVIENG 2014,
MADEEP,
MADIBENTHOS,
MAINBAZA,
PAPUA NIUGINI,
Restreint
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Feliciano K., Malaquias M.A.E., Stout C., Brenzinger B., Gosliner T.M. & Valdés Á. 2021. Molecular and morphological analyses reveal pseudocryptic diversity in Micromelo undatus (Bruguière, 1792) (Gastropoda: Heterobranchia: Aplustridae). Systematics and Biodiversity: 1-25. DOI:10.1080/14772000.2021.1939458
Campagnes accessibles citées (5) [+]
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Ghanimi H., Schrödl M., Goddard J.H.R., Ballesteros M., Gosliner T.M., Buske Y. & Valdés Á. 2020. Stargazing under the sea: molecular and morphological data reveal a constellation of species in the Berthella stellata (Risso, 1826) species complex (Mollusca, Heterobranchia, Pleurobranchidae). Marine Biodiversity 50(1): 11. DOI:10.1007/s12526-019-01027-w
Résumé [+]
[-]
Molecular and morphological evidence support the view that the widely distributed species Berthella stellata (Risso, 1826) is a species complex of at least eight different species. The closely related species Berthella plumula (Montagu, 1803), examined for comparison, is also a complex of two species; the name B. plumula is retained for the Atlantic species and the name Berthella perforata (Philippi, 1844) is proposed for the Mediterranean species. The B. stellata species complex forms a monophyletic group when the Eastern Pacific species Berthella strongi (MacFarland, 1966) is included. Based on a critical review of the literature, the name Berthella stellata is retained for the Eastern Atlantic and Mediterranean species, and the name Berthella pellucida (Pease, 1860) is resurrected for a species found in the Hawaiian Islands. Two new species from the Caribbean region (Berthella nebula sp. nov., Berthella vialactea sp. nov.) and one from the Eastern Pacific (Berthella andromeda sp. nov.) are described herein, but the status of the Brazilian species B. tupala Er. Marcus, 1957 remains uncertain. Two possible new species from the Eastern Pacific, represented by one specimen each, were recovered in the phylogenetic analyses but not formally described. It is hypothesized that additional species of this complex may occur in other parts of the Indo-Pacific tropics, particularly in the Indian Ocean.
Campagnes accessibles citées (1) [+]
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Goto R., Takano T., Eernisse D.J., Kato M. & Kano Y. 2021. Snails riding mantis shrimps: Ectoparasites evolved from ancestors living as commensals on the host’s burrow wall. Molecular Phylogenetics and Evolution 163: 107122. DOI:10.1016/j.ympev.2021.107122
Résumé [+]
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The molluscan class Gastropoda includes over 5,000 parasitic species whose evolutionary origins remain poorly understood. Marine snails of the genus Caledoniella (Caledoniellidae) are obligate parasites that live on the abdominal surface of the gonodactylid mantis shrimps. They have highly modified morphological characteristics specialized to the ectoparasitic lifestyle that make it difficult to infer their close relatives, thereby posing a question about their current systematic position in the superfamily Vanikoroidea. In the present study, we performed molecular phylogenetic analyses using three nuclear and three mitochondrial gene sequences to unveil the phylogenetic position of these enigmatic snails. The resulting trees recovered Caledoniella in the su perfamily Truncatelloidea and within a subclade of commensal species that live on the burrow wall of marine benthic invertebrates. More specifically, Caledoniella formed the sister clade to a commensal snail species living in mantis-shrimp burrows and they collectively were sister to Sigaretornus planus (formerly in the family Tornidae or Vitrinellidae), a commensal living in echiuran burrows. This topology suggests that the species of Caledoniella achieved their ectoparasitic mode of life through the following evolutionary pathway: (1) invasion into the burrows of benthic invertebrates, (2) specialization to mantis shrimps, and (3) colonization of the host body surface from the host burrow wall with the evolution of the parasitic nature. The final step is likely to have been accompanied by the acquisition of a sucker on the metapodium, the loss of the radula and operculum, and the formation of monogamous pair bonds. The present molecular phylogeny also suggested parallel evolution of planispiral shells in a subclade of Truncatelloidea and enabled us to newly redefine the families Caledoniellidae, Elachisinidae, Teinostomatidae, Tornidae and Vitrinellidae.
Campagnes accessibles citées (2) [+]
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Hallan A., Criscione F., Fedosov A. & Puillandre N. 2021. Few and far apart: integrative taxonomy of Australian species of Gladiobela and Pagodibela (Conoidea : Raphitomidae) reveals patterns of wide distributions and low abundance. Invertebrate Systematics. DOI:10.1071/IS20017
Résumé [+]
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The deep-sea malacofauna of temperate Australia remains comparatively poorly known. However, a recent influx of DNA-suitable material obtained from a series of deep-sea cruises has facilitated integrative taxonomic study on the Conoidea (Caenogastropoda : Neogastropoda). Building on a recent molecular phylogeny of the conoidean family Raphitomidae, this study focussed on the genera Gladiobela and Pagodibela (both Criscione, Hallan, Puillandre & Fedosov, 2020). We subjected a representative mtDNA cox1 dataset of deep-sea raphitomids to ABGD, which recognised 14 primary species hypotheses (PSHs), 9 of which were converted to secondary species hypotheses (SSHs). Following the additional examination of the shell and hypodermic radula features, as well as consideration of bathymetric and geographic data, seven of these SSHs were recognised as new to science and given full species rank. Subsequently, systematic descriptions are provided herein. Of these, five are attributed to Gladiobela (three of which are endemic to Australia and two more widely distributed) and two are placed in Pagodibela (one endemic to southern Australia and one widespread in the Pacific). The rarity of many ‘turrids’ reported in previous studies is confirmed herein, as particularly indicated by highly disjunct geographic records for two taxa. Additionally, several of the studied taxa exhibit wide Indo-Pacific distributions, suggesting that wide geographic ranges in deep-sea ‘turrids’ may be more common than previously assumed. Finally, impediments to deep-sea ‘turrid’ taxonomy in light of such comparative rarity and unexpectedly wide distributions are discussed.
Campagnes accessibles citées (13) [+]
[-]
ATIMO VATAE,
AURORA 2007,
BIOMAGLO,
BIOPAPUA,
BOA1,
EBISCO,
EXBODI,
KANACONO,
KARUBAR,
PAPUA NIUGINI,
SALOMON 2,
TARASOC,
ZhongSha 2015
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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 [+]
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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
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Houart R., Heros V. & Zuccon D. 2019. Description of Two New Species of Dermomurex (Gastropoda: Muricidae) with a Review of Dermomurex (Takia) in the Indo-West Pacifc. VENUS 78(1-2): 1-25. DOI:10.18941/venus.78.1-2_1
Résumé [+]
[-]
The subgenus Dermomurex (Takia) is reviewed and one new species, D. (T.) manonae n. sp., is described from New Caledonia. It is distinguished from the similar D. (T.) wareni Houart, 1990 based on genetic differences and a few shell characters. From other species it differs in its shell and intritacalx morphology. The four Indo-West Pacific species are reviewed and illustrated, namely D. (T.) bobyini Kosuge, 1984, D. (T.) infrons Vokes, 1974, D. (T.) wareni Houart, 1990 and D. (T.) manonae n. sp. Dermomurex (subgenus?) paulinae n. sp. is described from New Caledonia in an undetermined subgenus and is distinguished from D. (D.) africanus Vokes, 1978 from South Africa by its shell and intritacalx morphology. Trialatella is synonymized with Dermomurex s.s.
Campagnes accessibles citées (32) [+]
[-]
ATIMO VATAE,
BATHUS 2,
BATHUS 3,
BATHUS 4,
BENTHAUS,
BIOCAL,
CHALCAL 2,
CONCALIS,
EBISCO,
EXBODI,
KANACONO,
KANADEEP,
KARUBAR,
MIRIKY,
MUSORSTOM 4,
MUSORSTOM 5,
MUSORSTOM 6,
MUSORSTOM 8,
NORFOLK 1,
NORFOLK 2,
SMIB 1,
SMIB 2,
SMIB 3,
SMIB 4,
SMIB 5,
SMIB 6,
SMIB 8,
TAIWAN 2000,
TAIWAN 2002,
TAIWAN 2004,
TERRASSES,
VAUBAN 1978-1979
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Houart R. & Héros V. 2019. The genus Gemixystus Iredale, 1929 (Gastropoda: Muricidae: Trophoninae) in New Caledonia with the description of two new species and some notes on the genus in the Indo-West Pacific. Novapex 20(1-2): 1-12
Résumé [+]
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The genus Gemixystus Iredale, 1929 in New Caledonia is reviewed. Five species are recorded of which two are new, G. impolitus n. sp. and G. lenis n. sp. Gemixystus stimuleus (Hedley, 1912) is recorded for the first time in New Caledonia. Gemixystus transkeiensis (Houart, 1987) is re-transferred from Vaughtia to Gemixystus. The 12 extant species of Gemixystus are illustrated.
Campagnes accessibles citées (8) [+]
[-]
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Huang S.I. & Lin M.H. 2021. Thirty Trichotropid CAPULIDAE in tropical and subtropical Indo-Pacific and Atlantic Ocean (GASTROPODA). Bulletin of Malacology, Taiwan 44: 23-81
Résumé [+]
[-]
30 new species in the Trichotropid CAPULIDAE in the genera Verticosta, Latticosta n. gen., Torellia and Trichosirius are described from tropical and subtropical deep water of Indo-Pacific and Atlantic Ocean: Verticosta ariane n. sp., Verticosta bellefontainae n. sp., Verticosta milleinsularum n. sp., Verticosta filipinos n. sp., Verticosta plexa n. sp., Verticosta lapita n. sp., Verticosta pyramis n. sp., Verticosta kanak n. sp., Verticosta vanuatuensis n. sp., Verticosta feejee n. sp., Verticosta lilii n. sp., Verticosta sinusvellae n. sp., Verticosta terrasesae n. sp., Verticosta uvea n. sp., Verticosta rurutuana n. sp., Verticosta bicarinata n. sp., Verticosta tricarinata n. sp., Verticosta quadricarinata n. sp., Verticosta cheni n. sp., Verticosta iris n. sp., Verticosta castelli n. sp., Verticosta biangulata n. sp., Verticosta reunionnaise n. sp., Verticosta lemurella n. sp., Verticosta madagascarensis n. sp., Latticosta guidopoppei n. sp., Latticosta tagaroae n. sp., Latticosta magnifica n. sp., Torellia loyaute n. sp. and Trichosirius omnimarium n. sp. Trichotropis townsendi is now Latticosta townsendi n. comb.. Shell material comes from expeditions by MNHN and collections of authors.
Campagnes accessibles citées (51) [+]
[-]
ATIMO VATAE,
AURORA 2007,
BATHUS 1,
BATHUS 2,
BATHUS 3,
BATHUS 4,
BENTHAUS,
BENTHEDI,
BIOCAL,
BIOGEOCAL,
BIOMAGLO,
BIOPAPUA,
BOA1,
BORDAU 1,
BORDAU 2,
CONCALIS,
EBISCO,
EXBODI,
GUYANE 2014,
HALIPRO 1,
INHACA 2011,
KANACONO,
KARUBAR,
KAVIENG 2014,
LAGON,
LIFOU 2000,
MADEEP,
MADIBENTHOS,
MD32 (REUNION),
MIRIKY,
MONTROUZIER,
MUSORSTOM 10,
MUSORSTOM 2,
MUSORSTOM 3,
MUSORSTOM 4,
MUSORSTOM 6,
MUSORSTOM 7,
MUSORSTOM 8,
NORFOLK 1,
NORFOLK 2,
PANGLAO 2005,
PAPUA NIUGINI,
SALOMON 1,
SALOMON 2,
SALOMONBOA 3,
SANTO 2006,
SMIB 8,
Restreint,
TAIWAN 2000,
TARASOC,
TERRASSES
-
Innabi J., Stout C.C. & Valdés Á. 2023. Seven new “cryptic” species of Discodorididae (Mollusca, Gastropoda, Nudibranchia) from New Caledonia. ZooKeys 1152: 45-95. DOI:10.3897/zookeys.1152.98258
Résumé [+]
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The study of a well-preserved collection of discodorid nudibranchs collected in Koumac, New Caledonia, revealed the presence of seven species new to science belonging to the genera Atagema, Jorunna, Rostanga, and Sclerodoris, although some of the generic assignments are tentative as the phylogeny of Discodorididae remains unresolved. Moreover, a poorly known species of Atagema originally described from New Caledonia is re-described and the presence of Sclerodoris tuberculata in New Caledonia is confirmed with molecular data. All the species described herein are highly cryptic on their food source and in the context of the present study the term “cryptic” is used to denote such species. This paper highlights the importance of comprehensive collecting efforts to identify and document well-camouflaged taxa.
Campagnes accessibles citées (3) [+]
[-]
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Irwin A.R., Strong E.E., Kano Y., Harper E.M. & Williams S.T. 2021. Eight new mitogenomes clarify the phylogenetic relationships of Stromboidea within the caenogastropod phylogenetic framework. Molecular Phylogenetics and Evolution 158: 107081. DOI:10.1016/j.ympev.2021.107081
Résumé [+]
[-]
Members of the gastropod superfamily Stromboidea (Littorinimorpha) are characterised by their elaborate shell morphologies, distinctive mode of locomotion, and often large and colourful eyes. This iconic group comprises over 130 species, including many large and charismatic species. The family Strombidae is of particular interest, largely due to its commercial importance and wide distribution in tropical and subtropical waters. Although a few strombid mitochondrial genomes have been sequenced, data for the other four Recent families in Strom boidea are lacking. In this study we report seven new stromboid mitogenomes obtained from transcriptomic and genomic data, with taxonomic representation from each Recent stromboid family, including the first mitoge nomes for Aporrhaidae, Rostellariidae, Seraphsidae and Struthiolariidae. We also report a new mitogenome for the family Xenophoridae. We use these data, along with published sequences, to investigate the relationships among these and other caenogastropod groups. All analyses undertaken in this study support monophyly of Stromboidea as redefined here to include Xenophoridae, a finding consistent with morphological and behav ioural data. Consistent with previous morphological and molecular analyses, including those based on mitoge nomes, monophyly of Hypsogastropoda is confirmed but monophyly of Littorinimorpha is again rejected.
Campagnes accessibles citées (4) [+]
[-]
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Kantor Y.I., Puillandre N. & Bouchet P. 2020. The challenge of integrative taxonomy of rare, deep-water gastropods: the genus Exilia (Neogastropoda: Turbinelloidea: Ptychatractidae). Journal of Molluscan Studies 86: 120-138. DOI:10.1093/mollus/eyz037
Résumé [+]
[-]
According to a recent taxonomic revision by Kantor et al. (2001), the neogastropod genus Exilia Conrad, 1860, comprises ten mostly rare species that live at depths between 200 and 2000 m. Adult Exilia measure between 30 and 90 mm in shell length, and the genus is mostly represented in museum collections by empty shells. The abundance of this genus is low in the wild, but recent expeditions organized by the Muséum national d’Histoire naturelle have yielded several dozen specimens. These new collections include samples preserved for molecular studies. Here, we present the results of the first molecular systematic study of Exilia. Our aim was to investigate the species limits proposed by Kantor et al. (2001) on the basis of shell and anatomical characters. Analysis of DNA sequence data for the cytochrome c oxidase I gene suggests that Exilia hilgendorfi, previously considered to be a single, polymorphic and broadly distributed species, is a complex of at least six species (four of which we sequenced). Two of these species, Exilia cognata n. sp. and E. fedosovi n. sp., are described as new to science. Exilia gracilior, E. claydoni and E. prellei are resurrected from the synonymy of Exilia hilgendorfi; of these three, only the last was sequenced. Exilia vagrans is a welldefined taxon, but our molecular systematic data shows that it consists of two distinct species, which occur sympatrically off Taiwan and are strikingly similar in shell and radular morphology; due to the absence of DNA sequence data from the type locality of E. vagrans (Vanuatu), it is unclear to which of these two species the name would apply. Exilia karukera n. sp., which is conchologically very similar to E. vagrans, was discovered off Guadeloupe, represents the first record of the genus from the Atlantic. For E. elegans, which was previously known only from a single shell, we provide new data including new distributional records (South Africa and the Mozambique Channel), details of the radula and DNA sequence data.
Campagnes accessibles citées (19) [+]
[-]
ATIMO VATAE,
AURORA 2007,
BORDAU 2,
CONCALIS,
DongSha 2014,
KANACONO,
KANADEEP,
KARUBENTHOS 2,
MAINBAZA,
MIRIKY,
MUSORSTOM 8,
NORFOLK 2,
NanHai 2014,
PAPUA NIUGINI,
SALOMON 2,
SALOMONBOA 3,
TAIWAN 2013,
TARASOC,
TERRASSES
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Kantor Y.I., Fedosov A.E., Kosyan A.R., Puillandre N., Sorokin P.A., Kano Y., Clark R. & Bouchet P. 2022. Molecular phylogeny and revised classification of the Buccinoidea (Neogastropoda). Zoological Journal of the Linnean Society 194(3): 789-857. DOI:10.1093/zoolinnean/zlab031
Résumé [+]
[-]
Abstract
The superfamily Buccinoidea is distributed across the oceans of the world from the Arctic Ocean to the Antarctic and from intertidal to abyssal depths. It encompasses 3351 recent species in 337 genera. The latest taxonomic account recognized eight full families. For the first time, the monophyly of the superfamily and the relationships among the families are tested with molecular data supplemented by anatomical and radula data. Five genetic markers were used: fragments of mitochondrial COI, 16S rRNA, 12S rRNA and nuclear Histone 3 (H3) and 28S rRNA genes (for 225 species of 117 genera). Our analysis recovered Buccinoidea monophyletic in Bayesian analyses. The relationships between the formerly recognized families and subfamilies are drastically revised and a new classification of the superfamily is here proposed, now including 20 taxa of family rank and 23 subfamilies. Five new families (Chauvetiidae, Dolicholatiridae, Eosiphonidae, Prodotiidae and Retimohniidae) and one subfamily of Nassariidae (Tomliniinae) are described. Austrosiphonidae and Tudiclidae are resurrected from synonymy and employed in a new taxonomical extension. All but 40 recent genera are reclassified. Our results demonstrate that anatomy is rather uniform within the superfamily. With exceptions, the rather uniform radular morphology alone does not allow the allocation of genera to a particular family without additional molecular data.
Campagnes accessibles citées (42) [+]
[-]
ATIMO VATAE,
AURORA 2007,
BIOPAPUA,
BOA1,
CEAMARC-AA,
CHALCAL 2,
CONCALIS,
CORSICABENTHOS 1,
Restreint,
Restreint,
DongSha 2014,
EBISCO,
GUYANE 2014,
ILES DU SALUT,
INHACA 2011,
KANACONO,
KARUBENTHOS 2,
KARUBENTHOS 2012,
KAVALAN 2018,
KOUMAC 2.1,
KOUMAC 2.3,
MADIBENTHOS,
MAINBAZA,
MIRIKY,
MUSORSTOM 4,
Restreint,
NORFOLK 2,
NanHai 2014,
PANGLAO 2004,
PANGLAO 2005,
PAPUA NIUGINI,
Restreint,
SALOMON 2,
SALOMONBOA 3,
SANTO 2006,
TAIWAN 2000,
TAIWAN 2004,
TARASOC,
TERRASSES,
Tuhaa Pae 2013,
Restreint,
ZhongSha 2015
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Kantor Y.I., Fedosov A.E., Snyder M.A. & Bouchet P. 2018. Pseudolatirus Bellardi, 1884 revisited, with the description of two new genera and five new species (Neogastropoda: Fasciolariidae). European Journal of Taxonomy 433: 1-57. DOI:10.5852/ejt.2018.433
Résumé [+]
[-]
The genus Pseudolatirus Bellardi, 1884, with the Miocene type species Fusus bilineatus Hörnes, 1853, has been used for 13 Miocene to Early Pleistocene fossil species and eight Recent species and has traditionally been placed in the fasciolariid subfamily Peristerniinae Tryon, 1880. Although the fossil species are apparently peristerniines, the Recent species were in their majority suspected to be most closely related to Granulifusus Kuroda & Habe, 1954 in the subfamily Fusininae Wrigley, 1927. Their close affinity was confirmed by the molecular phylogenetic analysis of Couto et al. (2016). In the molecular phylogenetic section we present a more detailed analysis of the relationships of 10 Recent Pseudolatirus-like species, erect two new fusinine genera, Okutanius gen. nov. (type species Fusolatirus kuroseanus Okutani, 1975) and Vermeijius gen. nov. (type species Pseudolatirus pallidus Kuroda & Habe, 1961). Five species are described as new for science, three of them are based on sequenced specimens (Granulifusus annae sp. nov., G. norfolkensis sp. nov., Okutanius ellenae gen. et sp. nov.) and two (G. tatianae sp. nov., G. guidoi sp. nov.) are attributed to Granulifusus on the basis of conchological similarities to sequenced species. New data on radular morphology is presented for examined species.
Campagnes accessibles citées (60) [+]
[-]
ATIMO VATAE,
AURORA 2007,
BATHUS 1,
BATHUS 2,
BATHUS 3,
BATHUS 4,
BERYX 11,
BIOCAL,
BIOGEOCAL,
BORDAU 1,
BORDAU 2,
CHALCAL 2,
CONCALIS,
Restreint,
DongSha 2014,
EBISCO,
EXBODI,
GEMINI,
GUYANE 2014,
HALICAL 1,
HALIPRO 1,
KANACONO,
KARUBAR,
KARUBENTHOS 2012,
KAVIENG 2014,
LAGON,
LIFOU 2000,
LITHIST,
MADEEP,
MD32 (REUNION),
MIRIKY,
MUSORSTOM 10,
MUSORSTOM 2,
MUSORSTOM 3,
MUSORSTOM 4,
MUSORSTOM 5,
MUSORSTOM 6,
MUSORSTOM 7,
MUSORSTOM 8,
NORFOLK 1,
NanHai 2014,
PAKAIHI I TE MOANA,
PANGLAO 2004,
PANGLAO 2005,
PAPUA NIUGINI,
SALOMON 1,
SALOMON 2,
SANTO 2006,
SMIB 2,
SMIB 3,
SMIB 4,
SMIB 5,
SMIB 6,
SMIB 8,
TAIWAN 2000,
TARASOC,
TERRASSES,
VAUBAN 1978-1979,
VOLSMAR,
Restreint
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Kantor Y.I., Castelin M., Fedosov A. & Bouchet P. 2020. The Indo-Pacific Amalda (Neogastropoda, Olivoidea, Ancillariidae) revisited with molecular data, with special emphasis on New Caledonia. European Journal of Taxonomy 706: 1-52. DOI:10.5852/ejt.2020.706
Résumé [+]
[-]
In the ancillariid genus Amalda, the shell is character rich and 96 described species are currently treated as valid. Based on shell morphology, several subspecies have been recognized within Amalda hilgendorfi, with a combined range extending at depths of 150–750 m from Japan to the South-West Pacific. A molecular analysis of 78 specimens from throughout this range shows both a weak geographical structuring and evidence of gene flow at the regional scale. We conclude that recognition of subspecies (richeri Kilburn & Bouchet, 1988, herlaari van Pel, 1989, and vezzaroi Cossignani, 2015) within A. hilgendorfi is not justified. By contrast, hilgendorfi-like specimens from the Mozambique Channel and New Caledonia are molecularly segregated, and so are here described as new, as Amalda miriky sp. nov. and A. cacao sp. nov., respectively. The New Caledonia Amalda montrouzieri complex is shown to include at least three molecularly separable species, including A. allaryi and A. alabaster sp. nov. Molecular data also confirm the validity of the New Caledonia endemics Amalda aureomarginata, A. fuscolingua, A. bellonarum, and A. coriolis. The existence of narrow range endemics suggests that the species limits of Amalda with broad distributions, extending, e.g., from Japan to Taiwan (A. hinomotoensis) or even Indonesia, the Strait of Malacca, Vietnam and the China Sea (A. mamillata) should be taken with caution.
Campagnes accessibles citées (41) [+]
[-]
ATIMO VATAE,
BATHUS 1,
BATHUS 2,
BATHUS 3,
BIOCAL,
BIOPAPUA,
CHALCAL 1,
CONCALIS,
EBISCO,
EXBODI,
HALIPRO 1,
INHACA 2011,
KANACONO,
KANADEEP,
KARUBENTHOS 2012,
KAVIENG 2014,
LAGON,
MADEEP,
MAINBAZA,
MIRIKY,
MUSORSTOM 4,
MUSORSTOM 5,
NORFOLK 1,
NORFOLK 2,
NanHai 2014,
PANGLAO 2005,
PAPUA NIUGINI,
Restreint,
SALOMON 2,
SALOMONBOA 3,
SANTO 2006,
SMIB 1,
SMIB 2,
SMIB 3,
SMIB 4,
SMIB 5,
SMIB 8,
TERRASSES,
VAUBAN 1978-1979,
Restreint,
ZhongSha 2015
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Kantor Y.I. & Puillandre N. 2021. Rare, deep-water and similar: revision of Sibogasyrinx (Conoidea: Cochlespiridae). European Journal of Taxonomy 773: 19-60. DOI:10.5852/ejt.2021.773.1509
Résumé [+]
[-]
The genus Sibogasyrinx has to date included only four species of rare deep-water Conoidea, each known from few specimens. In shell characters it strongly resembles three distantly-related genera, two of which, Comitas and Leucosyrinx, belong to a different family, the Pseudomelatomidae. A molecular phylogenetic analysis of a large amount of material of Conoidea has revealed the existence of much additional undescribed diversity within Sibogasyrinx from the central Indo-Pacific and temperate Northern Pacific. Based on partial sequences of the mitochondrial cox1 gene and morphological characters of 54 specimens, 10 species hypotheses are proposed, of which six are described as new species: S. subula sp. nov., S. lolae sp. nov., S. maximei sp. nov., S. clausura sp. nov., S. pagodiformis sp. nov. and S. elbakyanae Kantor, Puillandre & Bouchet sp. nov. One of the previously described species was absent in our material. Most of the new species are very similar and are compared to Leucosyrinx spp. Species of Sibogasyrinx are unique among Conoidea on account of the high intrageneric variability in radular morphology. Three distinct radula types are found within Sibogasyrinx, two of which are confined to highly supported subclades.
Campagnes accessibles citées (16) [+]
[-]
AURORA 2007,
BIOPAPUA,
BOA1,
EBISCO,
EXBODI,
GUYANE 2014,
KANADEEP,
KAVIENG 2014,
MADEEP,
MIRIKY,
PANGLAO 2005,
PAPUA NIUGINI,
SALOMON 2,
SALOMONBOA 3,
SANTO 2006,
TERRASSES
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Zaharias P., Pante E., Gey D., Fedosov A.E. & Puillandre N. 2020. Data, time and money: evaluating the best compromise for inferring molecular phylogenies of non-model animal taxa. Molecular Phylogenetics and Evolution 142: 106660. DOI:10.1016/j.ympev.2019.106660
Résumé [+]
[-]
For over a decade now, High Throughput sequencing (HTS) approaches have revolutionized phylogenetics, both in terms of data production and methodology. While transcriptomes and (reduced) genomes are increasingly used, generating and analyzing HTS datasets remain expensive, time consuming and complex for most nonmodel taxa. Indeed, a literature survey revealed that 74% of the molecular phylogenetics trees published in 2018 are based on data obtained through Sanger sequencing. In this context, our goal was to identify the strategy that would represent the best compromise among costs, time and robustness of the resulting tree. We sequenced and assembled 32 transcriptomes of the marine mollusk family Turridae, considered as a typical non-model animal taxon. From these data, we extracted the loci most commonly used in gastropod phylogenies (cox1, 12S, 16S, 28S, h3 and 18S), full mitogenomes, and a reduced nuclear transcriptome representation. With each dataset, we reconstructed phylogenies and compared their robustness and accuracy. We discuss the impact of missing data and the use of statistical tests, tree metrics, and supertree and supermatrix methods to further improve phylogenetic data acquisition pipelines. We evaluated the overall costs (time and money) in order to identify the best compromise for phylogenetic data sampling in non-model animal taxa. Although sequencing full mitogenomes seems to constitute the best compromise both in terms of costs and node support, they are known to induce biases in phylogenetic reconstructions. Rather, we recommend to systematically include loci commonly used for phylogenetics and taxonomy (i.e. DNA barcodes, rRNA genes, full mitogenomes, etc.) among the other loci when designing baits for capture.
Campagnes accessibles citées (2) [+]
[-]
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Zaharias P., Kantor Y.I., Fedosov A.E., Criscione F., Hallan A., Kano Y., Bardin J. & Puillandre N. 2020. Just the once will not hurt: DNA suggests species lumping over two oceans in deep-sea snails (Cryptogemma). Zoological Journal of the Linnean Society 190(2): 532-557. DOI:10.1093/zoolinnean/zlaa010
Résumé [+]
[-]
Abstract
The practice of species delimitation using molecular data commonly leads to the revealing of species complexes and an increase in the number of delimited species. In a few instances, however, DNA-based taxonomy has led to lumping together of previously described species. Here, we delimit species in the genus Cryptogemma (Gastropoda: Conoidea: Turridae), a group of deep-sea snails with a wide geographical distribution, primarily by using the mitochondrial COI gene. Three approaches of species delimitation (ABGD, mPTP and GMYC) were applied to define species partitions. All approaches resulted in eight species. According to previous taxonomic studies and shell morphology, 23 available names potentially apply to the eight Cryptogemma species that were recognized herein. Shell morphometrics, radular characters and geographical and bathymetric distributions were used to link type specimens to these delimited species. In all, 23 of these available names are here attributed to seven species, resulting in 16 synonymizations, and one species is described as new: Cryptogemma powelli sp. nov. We discuss the possible reasons underlying the apparent overdescription of species within Cryptogemma, which is shown here to constitute a rare case of DNA-based species lumping in the hyper-diversified superfamily Conoidea.
Campagnes accessibles citées (25) [+]
[-]
ATIMO VATAE,
AURORA 2007,
BIOMAGLO,
BIOPAPUA,
CONCALIS,
DongSha 2014,
EBISCO,
EXBODI,
GUYANE 2014,
KANACONO,
KANADEEP,
KAVIENG 2014,
MADEEP,
MAINBAZA,
MIRIKY,
NORFOLK 2,
NanHai 2014,
PANGLAO 2004,
PAPUA NIUGINI,
SALOMON 2,
SALOMONBOA 3,
TAIWAN 2013,
TARASOC,
TERRASSES,
ZhongSha 2015