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Mitochondrial COI sequences revealed shallow but significant divergences among Amphioctopus aegina (Octopoda, Octopodidae) populations in coastal waters of China

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Title:Mitochondrial COI sequences revealed shallow but significant divergences among Amphioctopus aegina (Octopoda, Octopodidae) populations in coastal waters of China
Authors:Sun, Chenlian
Yan, Jun
Hou, Long
Zhao, Shijie
Muhammad, Faiz
show 2 moreLiu, Liqin
Lü, Zhenming
show less
Keywords:Amphioctopus aegina
Leizhou Peninsula
population genetic structure
recent divergence
Date Issued:2022
Abstract:Amphioctopus aegina is an important fishery resource in the coastal waters of China. In the present study, the genetic diversity and population genetic structure among four populations of A. aegina throughout its distributional range in China were assessed using the mitochondrial cytochrome oxidase 1 (COI) sequences. The results revealed a generally low genetic diversity (Hd: 0.2842–0.6670; Pi: 0.0007–0.0015) in A. aegina populations. The neighbor-joining (NJ) phylogenetic tree and the haplotype networks, as well as the results of the molecular variance (AMOVA) analyses, indicated a shallow phylogeographic structure among the four populations. However, pairwise ΦST statistics and genetic distance analyses revealed significant (p<0.01) genetic differentiation among Qinzhou and the rest three populations of Zhanjiang, Huizhou, and Dongshan. The demographic history analyses indicated a population expansion in A. aegina, and the role of Leizhou peninsula isolation in shaping the population differentiation. These results would largely enhance our understanding of the genetic structure and hence promote the scientific management of A. aegina fishery resources in coastal waters of China.
Pages/Duration:11 pages
URI:http://hdl.handle.net/10524/66880
ISSN:0792-156X
DOI:https://doi.org/10.46989/001c.37320
Volume:74
Appears in Collections: Volume 74, 2022


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