TAIWAN 2013

Programme

Tropical Deep-Sea Benthos (ex MUSORSTOM)

Informations générales

Chefs de mission

Chan Tin-Yam (Ocean Researcher 3)
Chen Wei-jen (Ocean Researcher 3)

Date et lieu de départ

20/05/2013

Date et lieu d'arrivée

30/05/2013

Etape	Date de départ	Date d'arrivée	Départ	Arrivée	Navire
Ocean Researcher 3	20/05/2013	21/05/2013			Ocean Researcher 3
Ocean Researcher 1	27/05/2013	30/05/2013			Ocean Researcher 1

Objectifs :

Travaux effectués :

Remerciements :

Bibliographie (19) [+] [-]

Exporter les bibliographies

Abdelkrim J., Aznar-Cormano L., Fedosov A.E., Kantor Y.I., Lozouet P., Phuong M.A., Zaharias P. & Puillandre N. 2018. Exon-Capture-Based Phylogeny and Diversification of the Venomous Gastropods (Neogastropoda, Conoidea), in Vidal N. (Ed.), Molecular Biology and Evolution 35(10): 2355-2374. DOI:10.1093/molbev/msy144
Résumé [+] [-]
Transcriptome-based exon capture methods provide an approach to recover several hundred markers from genomic DNA, allowing for robust phylogenetic estimation at deep timescales. We applied this method to a highly diverse group of venomous marine snails, Conoidea, for which published phylogenetic trees remain mostly unresolved for the deeper nodes. We targeted 850 protein coding genes (678,322 bp) in ca. 120 samples, spanning all (except one) known families of Conoidea and a broad selection of non-Conoidea neogastropods. The capture was successful for most samples, although capture efﬁciency decreased when DNA libraries were of insufﬁcient quality and/or quantity (dried samples or low starting DNA concentration) and when targeting the most divergent lineages. An average of 75.4% of proteins was recovered, and the resulting tree, reconstructed using both supermatrix (IQ-tree) and supertree (Astral-II, combined with the Weighted Statistical Binning method) approaches, are almost fully supported. A reconstructed fossil-calibrated tree dates the origin of Conoidea to the Lower Cretaceous. We provide descriptions for two new families. The phylogeny revealed in this study provides a robust framework to reinterpret changes in Conoidea anatomy through time. Finally, we used the phylogeny to test the impact of the venom gland and radular type on diversiﬁcation rates. Our analyses revealed that repeated losses of the venom gland had no effect on diversiﬁcation rates, while families with a breadth of radula types showed increases in diversiﬁcation rates, thus suggesting that trophic ecology may have an impact on the evolution of Conoidea.

Campagnes accessibles citées (23) [+] [-]
ATIMO VATAE, AURORA 2007, BIOPAPUA, CEAMARC-AA, CONCALIS, Restreint, DongSha 2014, EXBODI, GUYANE 2014, ILES DU SALUT, INHACA 2011, KARUBENTHOS 2012, KAVIENG 2014, MAINBAZA, NORFOLK 2, NanHai 2014, PANGLAO 2005, PAPUA NIUGINI, Restreint, SALOMONBOA 3, TAIWAN 2013, TERRASSES, Restreint

Codes des collections associés: IM (Mollusques)
Chen J.N., Samadi S. & Chen W.J. 2018. Rhodopsin gene evolution in early teleost fishes. PLOS ONE 13(11): e0206918. DOI:10.1371/journal.pone.0206918
Résumé [+] [-]
Rhodopsin mediates an essential step in image capture and is tightly associated with visual adaptations of aquatic organisms, especially species that live in dim light environments (e.g., the deep sea). The rh1 gene encoding rhodopsin was formerly considered a singlecopy gene in genomes of vertebrates, but increasing exceptional cases have been found in teleost fish species. The main objective of this study was to determine to what extent the visual adaptation of teleosts might have been shaped by the duplication and loss of rh1 genes. For that purpose, homologous rh1/rh1-like sequences in genomes of ray-finned fishes from a wide taxonomic range were explored using a PCR-based method, data mining of public genetic/genomic databases, and subsequent phylogenomic analyses of the retrieved sequences. We show that a second copy of the fish-specific intron-less rh1 is present in the genomes of most anguillids (Elopomorpha), Hiodon alosoides (Osteoglossomorpha), and several clupeocephalan lineages. The phylogenetic analysis and comparisons of alternative scenarios for putative events of gene duplication and loss suggested that fish rh1 was likely duplicated twice during the early evolutionary history of teleosts, with one event coinciding with the hypothesized fish-specific genome duplication and the other in the common ancestor of the Clupeocephala. After these gene duplication events, duplicated genes were maintained in several teleost lineages, whereas some were secondarily lost in specific lineages. Alternative evolutionary schemes of rh1 and comparison with previous studies of gene evolution are also reviewed.

Campagnes accessibles citées (5) [+] [-]
EXBODI, NanHai 2014, PAPUA NIUGINI, TAIWAN 2013, ZhongSha 2015

Codes des collections associés: IC (Ichtyologie)
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

Codes des collections associés: IM (Mollusques)
Dijkstra H.H. & Maestrati P. 2017. New species and new records of littoral and bathyal living Pectinoidea (Bivalvia: Propeamussiidae, Cyclochlamydidae, Pectinidae) from the western and southwestern Pacific. Zoosystema 39(4): 473-485. DOI:10.5252/z2017n4a3
Campagnes accessibles citées (13) [+] [-]
BIOCAL, BIOPAPUA, BORDAU 1, DongSha 2014, GEMINI, KARUBAR, KAVIENG 2014, MADEEP, MUSORSTOM 5, NanHai 2014, PAPUA NIUGINI, TAIWAN 2013, ZhongSha 2015

Codes des collections associés: IM (Mollusques)
Fedosov A.E., Zaharias P., Lemarcis T., Modica M.V., Holford M., Oliverio M., Kantor Y.I. & Puillandre N. 2024. Phylogenomics of Neogastropoda: The Backbone Hidden in the Bush, in Whelan N. (Ed.), Systematic Biology: syae010. DOI:10.1093/sysbio/syae010
Résumé [+] [-]
Abstract The molluskan order Neogastropoda encompasses over 15,000 almost exclusively marine species playing important roles in benthic communities and in the economies of coastal countries. Neogastropoda underwent intensive cladogenesis in the early stages of diversification, generating a “bush” at the base of their evolutionary tree, which has been hard to resolve even with high throughput molecular data. In the present study to resolve the bush, we use a variety of phylogenetic inference methods and a comprehensive exon capture dataset of 1817 loci (79.6% data occupancy) comprising 112 taxa of 48 out of 60 Neogastropoda families. Our results show consistent topologies and high support in all analyses at (super)family level, supporting monophyly of Muricoidea, Mitroidea, Conoidea, and, with some reservations, Olivoidea and Buccinoidea. Volutoidea and Turbinelloidea as currently circumscribed are clearly paraphyletic. Despite our analyses consistently resolving most backbone nodes, 3 prove problematic: First, the uncertain placement of Cancellariidae, as the sister group to either a Ficoidea-Tonnoidea clade or to the rest of Neogastropoda, leaves monophyly of Neogastropoda unresolved. Second, relationships are contradictory at the base of the major “core Neogastropoda” grouping. Third, coalescence-based analyses reject monophyly of the Buccinoidea in relation to Vasidae. We analyzed phylogenetic signal of targeted loci in relation to potential biases, and we propose the most probable resolutions in the latter 2 recalcitrant nodes. The uncertain placement of Cancellariidae may be explained by orthology violations due to differential paralog loss shortly after the whole genome duplication, which should be resolved with a curated set of longer loci.

Campagnes accessibles citées (23) [+] [-]
ATIMO VATAE, AURORA 2007, BIOMAGLO, BIOPAPUA, CORSICABENTHOS 1, DongSha 2014, EXBODI, ILES DU SALUT, INHACA 2011, KANACONO, KANADEEP, KARUBENTHOS 2, KAVIENG 2014, KOUMAC 2.1, KOUMAC 2.3, MADEEP, MADIBENTHOS, MAINBAZA, NanHai 2014, PAPUA NIUGINI, TAIWAN 2013, Tuhaa Pae 2013, ZhongSha 2015

Codes des collections associés: IM (Mollusques)
Houart R. & Buge B.. Noteworthy and New Muricidae (Gastropoda) Collected in the East and South China Seas and off Taiwan. : 23
Résumé [+] [-]
Recent expeditions to the China Seas and off Taiwan have resulted in new geographical extensions and new species discoveries in the Muricidae: Abyssotrophon weijencheni n. sp. and Enixotrophon petalospeira n. sp. (Pagodulinae), Scabrotrophon fedosovi n. sp. (Trophoninae) and Siphonochelus hasegawai Houart, Buge & Zuccon, 2021 (Typhinae). A distribution map for each listed species completes the information. Additional information is given for Enixotrophon ziczac (Tiba, 1981) from Japan, not collected during these expeditions but compared with one of the new species described herein.

Campagnes accessibles citées (9) [+] [-]
BATHUS 2, DongSha 2014, KAVALAN 2018, MUSORSTOM 6, TAIWAN 2000, TAIWAN 2001, TAIWAN 2002, TAIWAN 2013, ZhongSha 2015

Codes des collections associés: IM (Mollusques)
Houart R., Vermeij G. & Wiedrick S. 2019. New taxa and new synonymy in Muricidae (Neogastropoda: Pagodulinae, Trophoninae, Ocenebrinae) from the Northeast Pacific. Zoosymposia 13(1): 184-241. DOI:10.11646/zoosymposia.13.1.20
Résumé [+] [-]
The results of an extensive examination of northeast Pacific muricid gastropods ranging from Aleutian Islands, Alaska, to mid-Baja California, is presented. Two new genera and 26 new species are described: In Pagodulinae: Abyssotrophon fusiformis n. sp., A. newmani n. sp., Boreotrophon cascadiensis n. sp., B. cordellensis n. sp., B. cortesianus n. sp., B. obesus n. sp., B. subapolyonis n. sp., B. vancouverensis n. sp., B. aleuticus n. sp., B. pseudotripherus n. sp., B. santarosensis n. sp., B. tannerensis n. sp.

Campagnes accessibles citées (1) [+] [-]
TAIWAN 2013

Codes des collections associés: IM (Mollusques)
Houart R. & Buge B. 2022. Noteworthy and New Muricidae (Gastropoda) Collected in the East and South China Seas and off Taiwan. Venus 80(1-2): 1-23
Résumé [+] [-]
Recent expeditions to the China Seas and off Taiwan have resulted in new geographical extensions and new species discoveries in the Muricidae: Abyssotrophon weijencheni n. sp. and Enixotrophon petalospeira n. sp. (Pagodulinae), Scabrotrophon fedosovi n. sp. (Trophoninae) and Siphonochelus hasegawai Houart, Buge & Zuccon, 2021 (Typhinae). A distribution map for each listed species completes the information. Additional information is given for Enixotrophon ziczac (Tiba, 1981) from Japan, not collected during these expeditions but compared with one of the new species described he

Campagnes accessibles citées (9) [+] [-]
BIOPAPUA, DongSha 2014, KAVALAN 2018, NanHai 2014, PAPUA NIUGINI, TAIWAN 2000, TAIWAN 2002, TAIWAN 2013, ZhongSha 2015

Codes des collections associés: IM (Mollusques)
Kantor Y., Bouchet P., Fedosov A., Puillandre N. & Zaharias P. 2024. Generic revision of the Recent Turridae (Neogastropoda: Conoidea). Journal of Molluscan Studies 90(5): eyae032. DOI:10.1093/mollus/eyae032
Résumé [+] [-]
ABSTRACT The family Turridae, once considered to encompass the entire diversity of Conoidea, excluding only the cone shells (family Conidae) and the auger shells (family Terebridae), has undergone significant redefinition based on both morphological and molecular data. Prior to this study, it included 15 Recent genera, comprising 209 species. However, a recent comprehensive analysis of an extensive dataset featuring 3,159 cytochrome c oxidase subunit I sequences has unveiled numerous species complexes, new species and previously undiscovered deep lineages. The newly proposed classification of Turridae based on an exon-capture phylogeny recognizes 24 clades, each worthy of genus rank, though only 13 of them had available names. As a result, 11 new genera have been described, namely Thielesyrinx n. gen., Shutogemmula n. gen., Mcleanigemmula n. gen., Pseudogemmula n. gen., Deceptigemmula n. gen., Oliveragemmula n. gen., Powelligemmula n. gen., Kilburnigemmula n. gen., Alisigemmula n. gen., Taylorigemmula n. gen. and Anisogemmula n. gen. With the exception of Thielesyrinx n. gen., species from all of these were previously classified within Gemmula, or Lophiotoma. Notably, some new genera, such as Deceptigemmula n. gen., Kilburnigemmula n. gen., Shutogemmula n. gen. and Taylorigemmula n. gen., cannot be morphologically differentiated, as similar species are found in other genera. Therefore, their distinction relies solely on molecular data. The name Eugemmula is re-instated from the synonymy of Gemmula. Purpuraturris is synonimized with Annulaturris, while Iotyrris with Xenuroturris. In total, we recognize 312 species/primary species hypotheses (PSHs) within the family. Molecular data were obtained for 212 species (among them 15 species complexes comprising in total 45 PSHs), mostly for the first time. A characteristic feature common to the entire family is the position of the relatively narrow anal sinus on the whorl periphery or immediately above it. Radula was examined in representatives of all genera. Although in several cases the radular morphology can aid genus differentiation (e.g. distinguishing Turris from Annulaturris), it is mostly a highly homoplastic structure, with very similar radular types occurring in distantly related genera.

Campagnes accessibles citées (33) [+] [-]
ATIMO VATAE, AURORA 2007, BIOMAGLO, BIOPAPUA, BOA1, CONCALIS, DongSha 2014, EBISCO, EXBODI, GUYANE 2014, INHACA 2011, KANACONO, KANADEEP, KARUBENTHOS 2, KARUBENTHOS 2012, KOUMAC 2.1, MADEEP, MADIBENTHOS, MAINBAZA, MUSORSTOM 9, NORFOLK 2, NanHai 2014, PAKAIHI I TE MOANA, PANGLAO 2004, PANGLAO 2005, PAPUA NIUGINI, SALOMON 2, SALOMONBOA 3, TAIWAN 2004, TAIWAN 2013, TARASOC, TERRASSES, ZhongSha 2015

Codes des collections associés: IM (Mollusques)
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(2): 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

Codes des collections associés: IM (Mollusques)
Koch M., Ďuriš Z., Huang J. & Chan T. 2014. First report of the swimming crab Ovalipes iridescens (Miers, 1886) (Brachyura, Portunidae) from Taiwan. Crustaceana 87(14): 1640-1647. DOI:10.1163/15685403-00003386
Résumé [+] [-]
The portunid crab Ovalipes iridescens (Miers, 1886) is reported for the first time from the marine waters of Taiwan, and is just the second Ovalipes species known from this region. The only previously known Ovalipes species from Taiwan is a commercially-used species, Ovalipes punctatus (De Haan, 1833). The present study provides morphological and distributional data, and discusses the variability of the external morphology. The colour pattern of the body and the shape of the male gonopods of the newly recorded O. iridescens are illustrated.

Campagnes accessibles citées (1) [+] [-]
TAIWAN 2013

Codes des collections associés: IU (Crustacés)
Lee H., Puillandre N., Kano Y., Chen W.J. & Samadi S. 2022. Biodiversity and phylogeny of Cocculinidae (Gastropoda: Cocculinida) in the Indo-West Pacific. Zoological Journal of the Linnean Society 196(1): 366-392. DOI:10.1093/zoolinnean/zlac023
Résumé [+] [-]
Abstract The family Cocculinidae (Gastropoda: Cocculinida) consists of small, usually colourless benthic limpets living primarily at depths below 100 m, and on decaying plant or animal remains. These habitats are difficult to sample and the knowledge about Cocculinidae species diversity, biogeography, ecology and evolution is therefore poor. To explore the species diversity of the Cocculinidae, we examined 499 specimens collected from 196 sites, mainly explored during expeditions of the ‘Tropical Deep-Sea Benthos’ programme in the Indo-West Pacific (IWP). To propose a species hypotheses, we used an integrated approach to taxonomy in which we combined DNA-based methods, with morphological, geographical and ecological considerations. To classify the species hypotheses into genera, we used a combination of one mitochondrial and two nuclear gene fragments to reconstruct a phylogenetic tree. We then used six morphological characters to diagnose the identified genera. Our results revealed an exceptionally high diversity of IWP Cocculinidae, with 51 species hypotheses that were mostly not assigned to available species names. We also discovered a previously unknown type of copulatory structure in the group. At a higher taxonomic level, we identified ten main clades in the family. Although six of them matched existing genera, four others should be regarded as new genera awaiting formal description.

Campagnes accessibles citées (21) [+] [-]
AURORA 2007, BIOPAPUA, BOA1, CONCALIS, DongSha 2014, EBISCO, EXBODI, KAVALAN 2018, KAVIENG 2014, MADEEP, MAINBAZA, MIRIKY, NORFOLK 2, NanHai 2014, PANGLAO 2004, PANGLAO 2005, PAPUA NIUGINI, SALOMON 2, SALOMONBOA 3, SANTO 2006, TAIWAN 2013

Codes des collections associés: IM (Mollusques)
Ng P.K.L. & Yang C.H. 2021. On two new species of deep-sea carrier crabs (Crustacea, Brachyura, Homolodromiidae, Dicranodromia) from Taiwan and the Philippines, with notes on other Indo-West Pacific species. ZooKeys 1072: 129-165. DOI:10.3897/zookeys.1072.72978
Résumé [+] [-]
The systematics of four species of the homolodromiid genus Dicranodromia A. Milne-Edwards, 1880, from East Asia and the Philippines is reappraised: D. danielae Ng & McLay, 2005, D. doederleini Ortmann, 1892, D. karubar Guinot, 1993, and D. martini Guinot, 1995; and key characters such as the epistome, gonopods, and spermatheca are figured in detail. Two new species, D. erinaceus sp. nov. and D. robusta sp. nov., are described from Taiwan and the Philippines, respectively. Dicranodromia erinaceus sp. nov. resembles D. spinulata Guinot, 1995, and D. delli Ahyong, 2008 (from New Caledonia and New Zealand) but can be separated by its distinctly spinulated carapace surfaces and proportionately shorter fifth ambulatory legs. Dicranodromia robusta sp. nov. is superficially similar to D. baffini (Alcock & Anderson, 1899) and D. karubar Guinot, 1993, but can easily be separated by possessing a broad dorsoventrally flattened infraorbital tooth. A genetic study of the species using the mitochondrial cytochrome c oxidase I gene confirms that the taxa are distinct, with D. erinaceus sp. nov. coming out in a well-supported clade from congeners. The megalopa of D. doederleini is also reported for the first time.

Campagnes accessibles citées (2) [+] [-]
PANGLAO 2005, TAIWAN 2013

Codes des collections associés: IU (Crustacés)
Ng P.K. & Richer de Forges B. 2016. A new species of Homola Leach, 1816 (Crustacea: Brachyura: Homolidae) from Palau, Western Pacific, with notes on H. mieensis Sakai, 1979. Crustacean Research 45: 1-13. DOI:10.18353/crustacea.45.0_1
Campagnes accessibles citées (2) [+] [-]
CONCALIS, TAIWAN 2013

Codes des collections associés: IU (Crustacés)
Pante E., France S.C., Gey D., Cruaud C. & Samadi S. 2015. An inter-ocean comparison of coral endemism on seamounts: the case of Chrysogorgia. Journal of Biogeography 42(10): 1907-1918. DOI:10.1111/jbi.12564
Campagnes accessibles citées (10) [+] [-]
BIOPAPUA, EXBODI, MADEEP, NORFOLK 2, PAPUA NIUGINI, SALOMON 1, SALOMON 2, SMIB 4, TAIWAN 2013, TERRASSES

Codes des collections associés: IK (Cnidaires)
Phuong M.A., Alfaro M.E., Mahardika G.N., Marwoto R.M., Prabowo R.E., Von Rintelen T., Vogt P.W.H., Hendricks J.R. & Puillandre N. 2019. Lack of Signal for the Impact of Conotoxin Gene Diversity on Speciation Rates in Cone Snails, in Serb J. (Ed.), Systematic Biology 68(5): 781-796. DOI:10.1093/sysbio/syz016
Résumé [+] [-]
Understanding why some groups of organisms are more diverse than others is a central goal in macroevolution. Evolvability, or the intrinsic capacity of lineages for evolutionary change, is thought to influence disparities in species diversity across taxa. Over macroevolutionary time scales, clades that exhibit high evolvability are expected to have higher speciation rates. Cone snails (family: Conidae, $>$900 spp.) provide a unique opportunity to test this prediction because their toxin genes can be used to characterize differences in evolvability between clades. Cone snails are carnivorous, use prey-specific venom (conotoxins) to capture prey, and the genes that encode venom are known and diversify through gene duplication. Theory predicts that higher gene diversity confers a greater potential to generate novel phenotypes for specialization and adaptation. Therefore, if conotoxin gene diversity gives rise to varying levels of evolvability, conotoxin gene diversity should be coupled with macroevolutionary speciation rates. We applied exon capture techniques to recover phylogenetic markers and conotoxin loci across 314 species, the largest venom discovery effort in a single study. We paired a reconstructed timetree using 12 fossil calibrations with species-specific estimates of conotoxin gene diversity and used trait-dependent diversification methods to test the impact of evolvability on diversification patterns. Surprisingly, we did not detect any signal for the relationship between conotoxin gene diversity and speciation rates, suggesting that venom evolution may not be the rate-limiting factor controlling diversification dynamics in Conidae. Comparative analyses showed some signal for the impact of diet and larval dispersal strategy on diversification patterns, though detection of a signal depended on the dataset and the method. If our results remain true with increased taxonomic sampling in future studies, they suggest that the rapid evolution of conid venom may cause other factors to become more critical to diversification, such as ecological opportunity or traits that promote isolation among lineages.

Campagnes accessibles citées (21) [+] [-]
ATIMO VATAE, AURORA 2007, BIOPAPUA, CONCALIS, EBISCO, EXBODI, GUYANE 2014, INHACA 2011, KARUBENTHOS 2, KAVIENG 2014, MADEEP, MAINBAZA, MIRIKY, NORFOLK 2, NanHai 2014, PAKAIHI I TE MOANA, PAPUA NIUGINI, SALOMONBOA 3, SANTO 2006, TAIWAN 2013, TERRASSES

Codes des collections associés: IM (Mollusques)
Wong M.K. & Chen W.J. 2024. Exploring the phylogeny and depth evolution of cusk eels and their relatives (Ophidiiformes: Ophidioidei). Molecular Phylogenetics and Evolution 199: 108164. DOI:10.1016/j.ympev.2024.108164
Résumé [+] [-]
With 289 known species in 51 genera, the ophidiiform family Ophidiidae together with their relatives from the Carapidae (36 species in eight genera) of the same suborder Ophidioidei dominate the deep sea, but some occur also in shallow water habitats. Despite their high species diversity in the deep sea and wide bathymetric distributions, their phylogenetic relationships and evolution remain unexplored due in part to sampling difficulties. Thanks to the biodiversity exploratory program entitled “Tropical Deep-Sea Benthos” and joint efforts between Taiwan and French teams for sampling from different localities across the Indo-West Pacific over the last two decades, we are able to compile comprehensive datasets for investigations. In this study, 59 samples representing 36 of 59 known ophidioid genera are selected and used to construct a multi-gene dataset to infer the phylogenetic relationships of ophidioid fishes and their relatives. Our results reveal that the Ophidiidae forms a paraphyletic group with respect to the Carapidae. The four main clades of Ophidioidei resolved are the (1) clade comprising species from the subfamily Brotulinae; (2) clade that includes species in the genera Acanthonus and Xyelacyba; (3) clade grouping Hypopleuron caninum with species from the family Carapidae; and (4) clade containing the species in the subfamily Brotulotaenilinae, Neobythitinae (in part), and Ophidiinae. Accordingly, we suggest the following new revisions based on our results and proposed morphological diagnoses. The subfamily Brotulinae should be elevated to the family level. The genera Xyelacyba and probably Tauredophidium (unsampled in this study) should be included in the newly established family Acanthonidae with Acanthonus. The families Carapidae and Ophidiidae are re-defined. Our time-calibrated phylogenetic and ancestral depth reconstructions enable us to clarify the evolutionary history of ophidiiform fishes and infer past patterns of species distributions at different depths. While Ophidiiformes is inferred to have originated in shallow waters around 96.25 million years ago (Mya), the common ancestor to the Ophidioidei is inferred to have invaded the deep sea around 90.22 Mya, the dates coinciding with the global anoxic event of the OAE2. The observed bathymetric distribution patterns in Ophidioidei most likely point to the mesopelagic zone as the center of origin and diversification. This was followed by multiple events of depth transitions or range expansions towards either shallower waters or greater depth zones, which were likely triggered by past climate changes during the Paleogene-Neogene.

Campagnes accessibles citées (19) [+] [-]
AURORA 2007, BIOMAGLO, BIOPAPUA, DongSha 2014, EXBODI, KANACONO, KANADEEP, KANADEEP 2, KAVIENG 2014, MADEEP, NanHai 2014, Restreint, PAPUA NIUGINI, SAKIZAYA 2019, SAYA, SPANBIOS, TAIWAN 2013, TARASOC, ZhongSha 2015

Codes des collections associés: IC (Ichtyologie)
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

Codes des collections associés: IM (Mollusques)
Zaharias P., Kantor Y.I., Fedosov A.E. & Puillandre N. 2024. Coupling DNA barcodes and exon-capture to resolve the phylogeny of Turridae (Gastropoda, Conoidea). Molecular Phylogenetics and Evolution 191: 107969. DOI:10.1016/j.ympev.2023.107969
Campagnes accessibles citées (38) [+] [-]
ATIMO VATAE, AURORA 2007, BIOMAGLO, BIOPAPUA, BOA1, CONCALIS, CORSICABENTHOS 1, DongSha 2014, EBISCO, EXBODI, GUYANE 2014, INHACA 2011, KANACONO, KANADEEP, KARUBENTHOS 2, KARUBENTHOS 2012, KAVIENG 2014, KOUMAC 2.1, KOUMAC 2.3, MADEEP, MADIBENTHOS, MAINBAZA, MIRIKY, MUSORSTOM 9, NORFOLK 2, NanHai 2014, PAKAIHI I TE MOANA, PANGLAO 2004, PANGLAO 2005, PAPUA NIUGINI, SALOMON 2, SALOMONBOA 3, SANTO 2006, TAIWAN 2004, TAIWAN 2013, TARASOC, TERRASSES, ZhongSha 2015

Codes des collections associés: IM (Mollusques)

Liste des documents

Google Earth: Stations TAIWAN 2013, Google earth

Liste des photos

Collecte : 55 photos

Contexte : 65 photos

Organisme : 99 photos

Organisme sur débris organiques : 50 photos

Substrat : 10 photos

Débris organiques : 6 photos

Détritus : 8 photos

Sur le pont : 87 photos

Méthodes de captures : 2 photos

Inconnu : 7 photos

Liste des participants

Détail :

: Barazer, Jean-François ( Genavir); Maître d'équipage; Chan, Tin-Yam (Carcinologie, National Taiwan Ocean University); Chef de mission; Chang, Su-Ching; Chen, Wei-jen (Ichtyologie, National Taiwan University); Chef de mission; Corbari, Laure (Carcinologie, Muséum national d'Histoire naturelle); Héros, Virginie (Malacologie, Muséum national d'Histoire naturelle); Lee, Hsin (Malacologie, National Taiwan University); Lozouet, Pierre (Malacologie, Muséum national d'Histoire naturelle); Samadi, Sarah (Biologie évolutive, Muséum national d'Histoire naturelle); Tshudy, Dale; Tu, Tzu-Hsuan; Wang, Teng-Wei

Cartographie des stations de collectes

Fichier GoogleEarth (.kml) des points de collectes

Liste des stations

Station/collecte	Latitude	Longitude	Date	Profondeurs
CP4083	22°18'N	120°07'E	20130520 20/05/2013	688-747 m
CP4084	22°13'N	120°00'E	20130520 20/05/2013	976-1075 m
CP4085	22°13'N	120°25'E	20130521 21/05/2013	286-347 m
CP4086	22°12'N	120°24'E	20130521 21/05/2013	343-399 m
CP4087	22°11'N	120°22'E	20130521 21/05/2013	387-510 m
CP4088	22°11'N	120°23'E	20130521 21/05/2013	372-436 m
CP4089	22°13'N	120°25'E	20130527 27/05/2013	310-330 m
CP4090	22°13'N	120°23'E	20130527 27/05/2013	329-371 m
CP4091	22°14'N	119°59'E	20130527 27/05/2013	994-974 m
CP4092	22°19'N	121°05'E	20130528 28/05/2013	1107-1170 m
CP4093	22°15'N	121°04'E	20130528 28/05/2013	1187-1202 m
CP4094	22°11'N	121°05'E	20130528 28/05/2013	1213-1233 m
DW4095	21°12'N	121°33'E	20130529 29/05/2013	517-573 m
DW4096	21°13'N	121°33'E	20130529 29/05/2013	519-563 m
CP4098	21°47'N	120°39'E	20130530 30/05/2013	953-891 m
DW4097	21°47'N	120°39'E	20130530 30/05/2013	850-908 m

Taxons par accès

Classe	Accès	Nombre de signalements