A new predator connecting the abyssal with the hadal in the Kuril-Kamchatka Trench, NW Pacific

PeerJ

article

Anne-Nina Lörz¹  Anna Maria Jażdżewska²  Angelika Brandt³ 

[1] Centre of Natural History, Zoological Museum, University of Hamburg CeNak;Laboratory of Polar Biology and Oceanobiology, Department of Invertebrate Zoology and Hydrobiology, Faculty of Biology and Environmental Protection, University of Lodz;Department of Marine Zoology, Section Crustacea, Senckenberg Research Institute and Natural History Museum;Institute for Ecology, Evolution and Diversity, Goethe-University of Frankfurt

关键词: Rhachotropis;    Amphipoda;    Hadal;    Kuril-Kamchatka trench;    Abyssal;    Integrative taxonomy;   

DOI  :  10.7717/peerj.4887

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

The bathyal to hadal deep sea of north-west Pacific Ocean was recently intensively sampled during four international expeditions (KuramBio I and II, SoJaBio and SokhoBio). A large amphipod, Rhachotropis saskia n. sp., was sampled in the Kuril-Kamchatka Trench and increases the number of described hadal species of that area to eight. A detailed description of the new species is provided, including illustrations, scanning-microscope images and molecular analysis. This predatory species was sampled at both continental and ocean abyssal margins of the Kuril-Kamchatka Trench as well as at hadal depths of the trench. The wide bathymetric distribution of the new species over more than 3,000 m is confirmed by molecular analysis, indicating that the Kuril Kamchatka Trench is not a distribution barrier for this species. However, the molecular analysis indicated the presence of isolation by distance of the populations of the studied taxon.

【 授权许可】

CC BY