CORBARI, Laure; SORBE, Jean-Claude

doi:10.1007/s12526-017-0788-y

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CORBARI, Laure
Institut de Systématique, Evolution, Biodiversité [ISYEB ]

SORBE, Jean-Claude

Environnements et Paléoenvironnements OCéaniques [EPOC]

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Ce document a été publié dans

Marine Biodiversity. 2017

Résumé en anglais

A “tiny 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 ROV and 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.< Réduire

Mots clés en anglais

Amphipoda

Dulichiopsis

Behaviour

Hydrothermal vents

Deep sea