摘要
通过测定东印度洋北部、赤道、南部3个鸢乌贼(Sthenoteuthis oualaniensis)群体的线粒体DNA细胞色素b(Cytb)基因序列,分析了东印度洋鸢乌贼的系统发育关系。研究表明,东印度洋鸢乌贼整体具有高单倍型多样性(h=0.939)和高核苷酸多样性(π=0.015)。3个鸢乌贼群体间的F_(st)值为0.661,群体间遗传分化水平很高,具有明显的遗传分化现象,可分为以东印度洋北部群体为主的谱系1(东印度洋北部谱系)和主要由东印度洋赤道与南部群体组成的谱系2(东印度洋南部谱系),且谱系2经历过群体扩张。东印度洋巨大的南北水文差异可能是鸢乌贼产生南北谱系分化的原因,在东印度洋鸢乌贼资源的利用和管理方面应考虑南北谱系的差异和特点。
In this study,we determined the mitochondrial DNA cytochrome b gene(Cytb) sequences of the northern,equatorial and southern populations of Sthenoteuthis oualaniensis in the Eastern Indian Ocean,and analyzed the phylogenetic relationship.It was shown that S.oualaniensis in the Eastern Indian Ocean had an overall high haplotype diversity of 0.939 and a high nucleotide diversity of 0.015.F_(st) value among three populations was 0.661(P<0.01),reaching a high level of interpopulation genetic differentiation with significant genetic structure.Two lineages were revealed in three S.oualaniensis populations in the Eastern Indian Ocean.Lineage 1(the northern lineage of the Eastern Indian Ocean) is dominated by individuals from the northern population of the Eastern Indian Ocean;lineage 2(the southern lineage of the Eastern Indian Ocean)mainly consists of individuals from the equatorial population and the southern population of the Eastern Indian Ocean,and lineage 2 underwent population expansion.The great north-south hydro-logical difference in the Eastern Indian Ocean may be the reason for the north-south lineage divergence of S.oualaniensis in the Eastern Indian Ocean.The differences and characteristics of the north-south lineages should be considered in the utilization and management of S.oualaniensis resources in the Eastern Indian Ocean.
作者
许莎莎
唐峰华
任慧敏
李治洪
何利军
XU Shasha;TANG Fenghua;REN Huimin;LI Zhihong;HE Lijun(State Key Laboratory of Estuarine and Coastal Research,East China Normal University,Shanghai 200241,China;Institute of Eco-Chongming,East China Normal University,Shanghai 200062,China;East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Shanghai 200090,China;School of Geographic Sciences,East China Normal University,Shanghai 200241,China)
出处
《上海海洋大学学报》
CAS
CSCD
北大核心
2021年第6期970-980,共11页
Journal of Shanghai Ocean University
基金
国家重点研发计划(2018YFD0900902,2018YFD0900904)
中国科学院战略性先导科技专项(XDB42030203)
上海市2018年度科技创新行动计划“一带一路”国际合作项目(18230743200)
崇明生态研究院自由项目(ECNU-IEC-201902)。
关键词
鸢乌贼
CYTB基因
系统发育关系
种群遗传结构
Sthenoteuthis oualaniensis
Cytb gene
phylogenetic relationship
population genetic structure
