BICOSE
Une campagne orgnanisée par :
- Ifremer - Institut français de recherche pour l'exploitation de la mer
Avec la collaboration de :
- MNHN - Muséum national d'Histoire naturelle
Référence sismer
http://dx.doi.org/10.17600/14000100Informations générales
Date et lieu de départ
Date et lieu d'arrivée
Navire : Pourquoi Pas
Objectifs :
Travaux effectués :
Remerciements :
Bibliographie (4) [+] [-]
Exporter les bibliographies
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Corbari L. & Sorbe J.C. 2017. First observations of the behaviour of the deep-sea amphipod Dulichiopsis dianae sp. nov. (Senticaudata, Dulichiidae) in the TAG hydrothermal vent field (Mid-Atlantic Ridge). Marine Biodiversity. DOI:10.1007/s12526-017-0788-y
Campagnes accessibles citées (1) [+] [-]
Codes des collections associés: IU (Crustacés) -
Corbari L. & Sorbe J.C. 2018. First observations of the behaviour of the deep-sea amphipod Dulichiopsis dianae sp. nov. (Senticaudata, Dulichiidae) in the TAG hydrothermal vent field (Mid-Atlantic Ridge). Marine Biodiversity 48(1): 631-645. DOI:10.1007/s12526-017-0788-y
Résumé [+] [-]A Btiny and mysterious creature swinging on a stem^: that was the first observation of the new species Dulichiopsis dianae sp. nov. made during the remotely operated vehicle (ROV) dive devoted to the exploration of the surroundings of the vent site TAG (BICOSE cruise, 3550–3650 m). The viewing and analysis of the high-definition pictures from several dives (PL570, PL573 and PL575) corresponding to five different locations around TAG revealed that these organisms were amphipods, hung on erected and flexible masts (5–7 cm length) attached to the underlying hard substratum. Two specimens were opportunely sampled during dive PL575 (3637 m) with the suction sampler of the ROVand were identified as a new species ascribed to the genus Dulichiopsis (family Dulichiidae). The present study provides the morphological description of this new species, coupled with in situ observations of its behaviour and lifestyle in the vicinity of the TAG vent field. Taxonomic and ecological aspects of the family Dulichiidae are proposed here, as well as a review of the amphipod diversity in hydrothermal environments.
Campagnes accessibles citées (1) [+] [-]
Codes des collections associés: IU (Crustacés) -
Criscione F., Hallan A., Puillandre N. & Fedosov A. 2021. Where the snails have no name: a molecular phylogeny of Raphitomidae (Neogastropoda: Conoidea) uncovers vast unexplored diversity in the deep seas of temperate southern and eastern Australia. Zoological Journal of the Linnean Society 191(4): 961-1000. DOI:10.1093/zoolinnean/zlaa088
Résumé [+] [-]Abstract Although raphitomid snails are a dominant component of gastropod communities in deep seas worldwide, their systematics is still largely tentative. We assembled the most complete sampling of Raphitomidae from south-eastern Australia to date. Based on morphological and molecular data from this material, we produced a robust phylogenetic framework and used it to delimit genera. For the focus area, our results show a large proportion of undescribed species- and genus-level taxa, 11 of which are formally described herein. We demonstrate that the examination of purely morphological characters rarely suffices for the purpose of accurate genus delimitation. As a result, some traditionally highly diverse raphitomid genera (such as Gymnobela) turn out to be artificial assemblages of several unrelated, mostly undescribed, genus-level lineages. Our data suggest that comparable configurations of shell and radular features, observed at the genus level, commonly do not reflect true phylogenetic relationships. However, our results are inconclusive as to whether homoplasy or conservatism are the drivers of this phenomenon. Accommodating for the inevitable sampling biases, south-eastern Australia appears as a possible hotspot for both raphitomid diversity and endemism, when compared with adjacent areas.
Campagnes accessibles citées (7) [+] [-]
Codes des collections associés: IM (Mollusques) -
Mandon P., Aznar-cormano L., Hourdez S. & Samadi S. 2017. Assembly of the mitochondrial genome of the hydrothermal vent crab Segonzacia mesatlantica and detection of potential nuclear pseudogenes. Mitochondrial DNA Part B 2(1): 291-293. DOI:10.1080/23802359.2017.1318674
Campagnes accessibles citées (1) [+] [-]
Codes des collections associés: IU (Crustacés)
Liste des documents
- Documents post-campagne
- Accès restreint (1)
Liste des photos
Cartographie des stations de collectes
Liste des stations
Taxons par accès
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