东印度洋、南海海域鸢乌贼种群遗传结构研究  

Genetic structure of Sthenoteuthis oualaniensis population in the east Indian Ocean and South China Sea

作　　者：赵炎 王丛丛[1,2,3,4,5] 刘必林 林龙山[6] 李渊 ZHAO Yan;WANG Congcong;LIU Bilin;LIN Longshan;LI Yuan(College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Ministry of Education,Shanghai 201306,China;National Distant-water Fisheries Engineering Research Center,Shanghai Ocean University,Shanghai 201306,China;Key Laboratory of Oceanic Fisheries Exploration,Ministry of Agriculture and Rural Affairs,Shanghai 201306,China;Scientific Observing and Experimental Station of Oceanic Fishery Resources,Ministry of Agriculture and Rural Affairs,Shanghai 201306,China;Third Institute of Oceanography,Ministry of Natural Resources,Xiamen Fujian 361005,China)

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]大洋渔业资源可持续开发教育部重点实验室,上海201306 [3]国家远洋渔业工程技术研究中心,上海海洋大学,上海201306 [4]农业农村部大洋渔业开发重点实验室,上海201306 [5]农业农村部大洋渔业资源环境科学观测实验站,上海201306 [6]自然资源部第三海洋研究所,福建厦门361005

出　　处：《海洋渔业》2022年第4期396-408,共13页Marine Fisheries

基　　金：上海市高校特聘教授“东方学者”岗位计划项目(0810000243);国家重点研发计划(2019YFD0901404);国家自然科学基金面上项目(NSFC41876141);上海市科技创新行动计划(19DZ1207502);全球变化与海气相互作用专项(GASI-01-EIND-YD01aut/02aut号)。

摘　　要：为了解东印度洋赤道、南海海域鸢乌贼(Sthenoteuthis oualaniensis)种群遗传结构,更好地对鸢乌贼渔业资源进行合理的管理,测定了东印度洋赤道北部和南部、南海北部和南部4个鸢乌贼群体共120尾个体线粒体DNA细胞色素b(cytochrome b)基因,分别对东印度洋赤道、南海海域鸢乌贼种群遗传结构展开研究。结果显示,4个群体总的核苷酸多样性与单倍型多样性为0.27332和0.981,其中南海北部海域群体的单倍型多样性最高为0.989,南海南部海域群体核苷酸多样性最高为0.30660。构建的单倍型网状图和系统发育树显示,东印度洋和南海群体间遗传分化显著。分子方差分析结果显示,遗传变异54.90%来自于组群间;群体间的F_(st)(F-statistics)分析表明,东印度洋赤道北部和南部群体F_(st)值为0.08588,南海北部和南部群体F_(st)值为0.02536,表明南海两个群体间不存在显著的遗传分化,东印度洋两个群体间遗传分化较小。东印度洋赤道两侧频繁的洋流活动可能是导致赤道南北群体遗传分化的重要因素,而东印度洋与南海之间的地理隔离则导致两个地理群体间遗传分化显著。综上所述,东印度洋赤道、南海海域鸢乌贼群体是两个独立的群体,在渔业管理上也应视为两个独立的管理单元。Purpleback flying squid,Sthenoteuthis oualaniensis,widely distributed in tropical and subtropical waters such as the equator in the Indian and Pacific oceans.The species possesses fast growth rate,strong reproductive capacity and short life cycle,occuping an important position in the marine ecosystems.Sthenoteuthis oualaniensis is not only the predator of zooplankton,lanternfish and other organisms,but also the food source for many marine predators,therefore,the changes of its resources have a profound impact on the entire ecosystem.At the same time,it has a relatively high resource abundance.Sthenoteuthis oualaniensis possesses a large resource in the Northwest Indian Ocean and the South China Sea,with high potential commercial value.It is gradually becoming one of the important fishery species.As the basic unit of fishery management,researches on the population structure of Sthenoteuthis oualaniensis are crucial to the rational evaluation and management of fishery resources,and it is also important for the scientific management and rational maintenance of Sthenoteuthis oualaniensis fishery resources and genetic resources reference.Due to the complex current changes in the equatorial waters of the East Indian Ocean,researches on the genetic structure of Sthenoteuthis oualaniensis have not yet been reported.Whether there are genetic differences between groups still needs further researches.Population genetics are helpful in understanding the population structures and genetic variations in this sea area.The South China Sea is an important economic sea area in China,and there are important fishery resources available for exploitation,among which Sthenoteuthis oualaniensis resources are the most abundant species.It should be further developed and utilized.Further understanding of the genetic structure of Sthenoteuthis oualaniensis population in the South China Sea is extremely important for its’sustainable development and utilization in the South China Sea.Whether there are genetic differences between Sthenoteuthi

关 键 词：鸢乌贼 种群遗传结构 细胞色素B基因 东印度洋 南海 

分 类 号：S931[农业科学—渔业资源]