基于线粒体CO I基因序列的棘头梅童鱼7个野生群体遗传结构分析

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基于线粒体CO I基因序列的棘头梅童鱼7个野生群体遗传结构分析
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作者单位:1. 农业部东海与远洋渔业资源开发利用重点实验室, 中国水产科学研究院 东海水产研究所, 上海 200090; 2. 上海海洋大学 水产与生命学院, 上海 201306
作者简介:赵明(1989–) , 男, 硕士研究生, 主要从事海水鱼类遗传多样性研究. E-mail: tomorrow333@126.com
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中图分类号:S972.1
基金项目:中央级公益性科研院所基本科研业务费专项资金(东2012M06); 水产种质资源平台(2014DKA30470); 公益性行业(农业)科研专项(201303047).

Population genetic structure of Collichthys lucidus based on the mitochondrial cytochrome oxidase subunit I sequence

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1. Key Laboratory of East China Sea and Oceanic Fishery Resources Exploitation, Ministry of Agriculture; East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China; 2. College of Fishery and Life Science, Shan

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Collichthys lucidus Richardson) 7江苏连云港、江苏大丰、上海崇明、浙江舟山、浙江温州、福建宁德和福建厦门个群体种单倍型。(0.416±0.112)~(0.720±0.076), , 群体内为以南则为南方类群。两群体之间的基因流数据表明南方与北方类群的基因交流受阻推测而自身的生活习性则是南、北类群内部无明显分化的原因。其结果可以为合理开发和利用棘头梅童鱼野生资源

Abstract:

is distributed in the coastal waters and estuaries of the northwest Pacific Ocean, including the Yellow Sea and East China Sea. This species is rapidly becoming one of the most important marine fishery species in China. Extensive studies have shown that the abundance of C. lucidus has recently declined significantly because of overfishing and environmental degradation. To develop conservation measures there is a need to better understand the genetic population structure of C. lucidus. Fish (n=209) were collected from seven sampling locations in the south Yellow Sea and East China Sea, including Lianyungang, Dafeng, Chongming, Zhoushan, Wenzhou, Ningde, and Xiamen. A 611 bp mitochondrial CO I sequence was amplified by PCR then used for genetic structure analysis. We detected 44 haplotypes, the haplotype diversity index ranged from (0.416±0.112) to (0.720±0.076), and then ucleotide diversity index ranged from (0.00110±0.00035) to (0.00444±0.00164). The results of an AMOVA revealed there were two groups (north and south). The shallow topology of the haplotype neighbor-joining (NJ) tree and the UPGMA tree based on genetic distance suggests there is distinct structure across the seven populations. We define south Wenzhou as part of the southern group, and north Wenzhou as part of the northern group. The estimate of gene flow between the southern and northern groups was <1, which indicates that gene exchanges between these two groups are rare. Based on the expansion parameter τ, we speculate that the separation occurred during the Pleistocene, and the migratory behaviorof C. lucidus likely explains the current lack of differentiation within the southern or northern groups. Our results can be used to inform the sustainable exploitation and conservation of wild C. lucidus populations.

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赵明,宋炜,马春艳,张凤英,蒋科技,宋志明,马凌波.基于线粒体CO I基因序列的棘头梅童鱼7个野生群体遗传结构分析[J].中国水产科学,2015,22(2):233-242
ZHAO Ming, SONG Wei, MA Chunyan, ZHANG Fengying, JIANG Keji, SONG Zhiming, MA Lingbo. Population genetic structure of Collichthys lucidus based on the mitochondrial cytochrome oxidase subunit I sequence[J]. Journal of Fishery Sciences of China,2015,22(2):233-242

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在线发布日期: 2015-06-29
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