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Title :Genetic population structure of the fiddler crab Austruca lactea (De Haan, 1835) based on mitochondrial DNA control region sequences
Authors :Tokuyama, Takenobu
Shy, Jhy-Yun
Lin, Hui-Chen
Henmi, Yasuhisa
Mather, Peter
Hughes, Jane
Tsuchiya, Makoto
Imai, Hideyuki
Issue Date :3-Sep-2020
Abstract :The fiddler crab, Austruca lactea inhabits tidal flat areas and is widely distributed across Japan, the Korean Peninsula, China, Taiwan and northern Vietnam. Fiddler crab habitat is being lost rapidly due to human impacts and this species is currently listed as endangered in Japan. We studied the population genetic structure of A. lactea using mitochondrial DNA control region markers to define management units. A. lactea individuals were sampled from Osaka, Hiroshima and Kumamoto in Japan, and from Taichung and the Penghu Islands in Taiwan. All local samples exhibited high levels of genetic diversity, and no sampled populations showed evidence for a significant decline in effective population size that can result from population bottleneck effects. Pairwise FST estimates distinguished three discrete A. lactea populations corresponding with, the Seto Inland Sea (Osaka and Hiroshima), Kyushu (Kumamoto) and Taiwan. The three populations showed clear differences in historical population expansion times and their population dynamics after expansion. Results of the study indicate that A. lactea dispersal is limited geographically and that high levels of genetic diversity are maintained both within and among populations.
URL :https://doi.org/10.18353/crustacea.49.0_141
Type Local :雑誌掲載論文
ISSN :2189-5317
Publisher :Carcinological Society of Japan
URI :http://hdl.handle.net/20.500.12000/46908
Citation :Crustacean Research Vol.49 p.141 -153
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Science)

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