Population genetic structure of mantis shrimps Oratosquilla oratoria: Testing the barrier effect of the Yangtze River outflow

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• 作者：Xinwei Du^a ; Shanshan Cai^a ; Cungen Yu^a ; Xinqin Jiang^a ; Longshan Lin^b ; Tianxiang Gao^a ; Zhiqiang Han^a ; ^{d6339124@163.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Oratosquilla oratoria ; Yangtze river outflow ; mtDNA 16S rRNA ; Physical barrier
• 刊名：Biochemical Systematics and Ecology
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：66
• 期：Complete
• 页码：12-18
• 全文大小：692 K

文摘

In order to ascertain impact of freshwater outflow from the Yangtze River on the gene flow of coastal species, the population genetic structure of mantis shrimps Oratosquilla oratoria in the East China Sea and Yellow Sea was analyzed by the partial mitochondrial DNA 16S rRNA gene. A total of 124 individuals from seven localities in the East China Sea and Yellow Sea were collected and 31 haplotypes were detected, giving an overall haplotype diversity of 0.8193 ± 0.0272 and nucleotide diversity of 0.0036 ± 0.0022. Two genetically divergent lineages were revealed, which displayed strong differences in the geographical distribution. Significant genetic differentiation between the East China Sea and Yellow Sea were also revealed by the results of AMOVA and pair-wise F_ST. The present result supported our hypothesis that barrier effect of the Yangtze River outflow on gene flow of coastal species depend on differentiation salinity tolerance of species. It demonstrated that genetic pattern of O. oratoria in the East China Sea and Yellow Sea may be attributable to the interplay between salinity and the species’ life history traits.