期刊
ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY
卷 194, 期 1, 页码 181-225出版社
OXFORD UNIV PRESS
DOI: 10.1093/zoolinnean/zlab032
关键词
abyssal; Amphipoda; central eastern Pacific; Clarion-Clipperton Zone; COI; Crustacea; north-west Pacific; taxonomy
类别
资金
- BGR (Bundesanstalt fur Geowissenschaften und Rohstoffe -German Federal Institute for Geosciences and Natural Resources)
- Russian Science Foundation [14-50-00034]
- Bundesministerium fur Bildung und Forschung -(BMBF German Ministry for Science and Education) [03G0857A]
- BMBF [03G0223A, 03G0250A]
- German Science Foundation (DFG, Deutsche Forschungsgemeinschaft) [BR3843/4-1]
- Polish National Science Centre grant [2014/15/D/NZ8/00289]
- German Academic Exchange Service (Deutscher Akademischer Austauschdienst -[DAAD]) [57440915]
- UK Seabed Resources Ltd.
Collections of the amphipod genus Oedicerina from the Pacific Ocean revealed four new species, each found in different deep-sea environments and showing genetic and morphological distinctions. The study also showed evidence of population connectivity across the Kuril-Kamchatka Trench for the new species. No species have been found on both sides of the Pacific so far.
Collections of the amphipod genus Oedicerina were obtained during six expeditions devoted to the study of deep-sea environments of the Pacific Ocean. The material revealed four species new to science. Two species (Oedicerina henricisp. nov. and Oedicerina teresae sp. nov.) were found at abyssal depths of the central eastern Pacific in the Clarion-Clipperton Zone; one species (Oedicerina claudei sp. nov.) was recovered in the Sea of Okhotsk (north-west Pacific), and one (Oedicerina lesci sp. nov.) in the abyss adjacent to the Kuril-Kamchatka Trench (KKT). The four new species differ from each other and known species by the shapes of the rostrum, coxae 1 and 4, basis of pereopod 7, armatures of pereonite 7, pleonites and urosomites. An identification key for all known species is provided. The study of the cytochrome c oxidase subunit I gene of the four new species and Oedicerina ingolfi collected in the North Atlantic confirmed their genetic distinction. However, small intraspecific variation within each of the studied species was observed. In the case of the new species occurring across the KKT, the same haplotype was found on both sides of the trench, providing evidence that the trench does not constitute an insurmountable barrier for population connectivity. None of the species have so far been found on both sides of the Pacific.
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