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Issue:ISSN 1000-7083
          CN 51-1193/Q
Director:Sichuan Association for Science and Technology
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Genetic Diversity of Acanthochiton rubrolineatus in the Bohai Rim
Author of the article:QU Jiangyong
Author's Workplace:Yantai University
Key Words:Acanthochiton rubrolineatus; ecological genetics; genetic structure; cytochrome oxidase subunit I
Abstract:The genetic diversity and genetic structure of 9 populations of Acanthochiton rubrolineatus in the Bohai Rim were analyzed using mitochondrial cytochrome oxidase subunit I (COI). 126 individuals were sequenced to obtain COI gene sequence of 654bp. A total of 29 haplotypes were detected by 41 polymorphic loci. The haplotype diversity of all samples was 0.899±0.013, and the nucleotide diversity was 0.0133±0.0068. There was a significant negative correlation between the population genetic diversity and latitudinal (r=-0.808, P<0.05) and annual mean temperature variation coefficient (r=-0.795, P<0.05), indicating that A. rubrolineatus was suitable for low latitudes and temperature stable marine environment. AMOVA analysis showed that genetic variation occurred mainly within populations (83.26%, P<0.001). Phylogenetic tree and haplotype network did not show obvious phylogeographic structure. Population demographic results showed that A. rubrolineatus had experienced population expansion during the late period of early Pleistocene (the second warm period) and interglacial period.
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