25 stations/gatherings
SAKIZAYA 2019
Program
General information
Heads of mission
Date and place of departure
Date and place of arrival
Ship : Ocean Researcher 1
Goals :
Works :
Thanks :
Bibliography (2) [+] [-]
Export the bibliographies
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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 197(4): 924-964. DOI:10.1093/zoolinnean/zlac091
Abstract [+] [-]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.
Accessible surveys cited (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
Associated collection codes: IM (Molluscs) -
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
Abstract [+] [-]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.
Accessible surveys cited (19) [+] [-]AURORA 2007, BIOMAGLO, BIOPAPUA, DongSha 2014, EXBODI, KANACONO, KANADEEP, KANADEEP 2, KAVIENG 2014, MADEEP, NanHai 2014, Restricted, PAPUA NIUGINI, SAKIZAYA 2019, SAYA, SPANBIOS, TAIWAN 2013, TARASOC, ZhongSha 2015
Associated collection codes: IC (Ichthyology)
List of photos
Collecte : 28 photos
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Organisme : 31 photos
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Substrat : 8 photos
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Sur le pont : 16 photos
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Méthodes de captures : 11 photos
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Unknown : 1 photo
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List of participants
Detail :
- Bouchet, Philippe (Malacologie, Muséum national d'Histoire naturelle)
- Chan, Tin-Yam (Carcinologie, National Taiwan Ocean University)
- Chef de mission
- Chen, Wei-jen (Ichtyologie, Institute of Oceanography National Taiwan University)
- Chef de mission
- Hsu, Chia-Yu (Carcinologie, National Taiwan Ocean University)
- Hsu, Ling-Lan (Ichtyologie, Institute of Oceanography National Taiwan University)
- Hsu, Yan-Cheng (Carcinologie, National Taiwan Ocean University)
- King Leung, Cheuk (Ecologie benthique, Institute of Oceanography National Taiwan University)
- Le Gall, Michel ( Muséum national d'Histoire naturelle)
- Lee, Hsin (Malacologie, Institute of Oceanography National Taiwan University)
- NG, Hoi-Ying (Echinodermologie, Department of GeoScience, National Taiwan University)
- Nakayama, Naohide (Ichtyologie, Tokai University)
- Tang, Jing (Ecologie benthique, Institute of Oceanography National Taiwan University)
- Tongboonkua, Pakorn (Ichtyologie, Institute of Oceanography National Taiwan University)
- Wei, Chih-Lin (Ecologie benthique, Institute of Oceanography National Taiwan University)
- Yang, Chien-Hui (Carcinologie, National Taiwan Ocean University)
Stations map
GoogleEarth file (.kml)
List of stations
Taxonomy by access
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