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Unexpected low genetic differentiation between Japan and Bering Sea populations of a deep-sea benthic crustacean lacking a planktonic larval stage (Peracarida: Tanaidacea)
| Title: | Unexpected low genetic differentiation between Japan and Bering Sea populations of a deep-sea benthic crustacean lacking a planktonic larval stage (Peracarida: Tanaidacea) |
| Authors: | Kakui, Keiichi Browse this author →KAKEN DB | | Nomaki, Hidetaka Browse this author | | Komatsu, Hironori Browse this author | | Fujiwara, Yoshihiro Browse this author →KAKEN DB |
| Keywords: | COX1 | | Crustacea | | direct development | | Malacostraca | | Pacific | | phylogeography | | population genetics |
| Issue Date: | Nov-2020 |
| Publisher: | Oxford University Press |
| Journal Title: | Biological Journal of the Linnean Society |
| Volume: | 131 |
| Issue: | 3 |
| Start Page: | 566 |
| End Page: | 574 |
| Publisher DOI: | 10.1093/biolinnean/blaa106 |
| Abstract: | Information on the extent, diversity and connectivity of populations is lacking for most deep-sea invertebrates. Species of the order Tanaidacea (Crustacea), one of the most diverse and abundant macrofaunal groups in the deep sea, are benthic, lack a planktonic larval stage, and thus would be expected to have narrow distributional ranges. However, with molecular evidence from the COI gene, we show here that the deep-sea tanaidacean Carpoapseudes spinigena has a distributional range spanning at least 3700 km, from off northern Japan to the south-eastern Bering Sea. Living individuals found in a sediment core indicated that the species is a sedentary burrower. COI analyses revealed a low level of genetic diversity overall, and low differentiation (p-distance, 0.2–0.8%) between the Japan and Bering Sea populations. One hypothesis to explain the low genetic diversity over a broad region is that the Japan population was founded by individuals transported by ocean currents from the Bering Sea. However, due to limited data, other explanations cannot be ruled out. Our results indicate that continued sampling is of fundamental importance to understanding how genetic and taxonomic diversity originate and are maintained in the deep sea. |
| Rights: | This is a pre-copyedited, author-produced version of an article accepted for publication in Biological Journal of the Linnean Society following peer review. The version of record Volume 131, Issue 3, 2020, Pages 566-574 is available online at: https://doi.org/10.1093/biolinnean/blaa106. |
| Type: | article (author version) |
| URI: | http://hdl.handle.net/2115/83124 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 角井 敬知
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