摘要
为深入掌握日本鲭(Scomber japonicus)的种群生态学及繁殖生物学,就目前日本鲭种群的研究现状进行了概括,包括种群划分、生长摄食特征、繁殖环境条件、繁殖力以及性成熟大小等。结果显示,目前日本鲭种群的划分方法较多,导致同一片海域划分结果不同;日本鲭生长摄食对环境因素极其敏感,对其群体进行监测应以季节为基础;盐度和温度可能是控制日本鲭对产卵场和产卵时间选择的重要因素;与历史数据相比,日本鲭表现出相对繁殖力升高、性成熟叉长减小的趋势。深入了解日本鲭种群生态学及繁殖生物学,将有助于日本鲭资源的合理利用和制定科学的分类保护管理措施。
With the decline of marine demersal fish resources,Scomber japonicus has become the main fishing target due to its high resource quantity.In the condition of high-intensity fishing pressure,the reproductive biological characteristics of Scomber japonicus have changed obviously in various sea areas.The population structure of Scomber japonicus is complex,obvious differences may occurr between adjacent sea areas or even in the same sea area.Thus,the prerequisite for the classification,protection and management of Scomber japonicus population is to divide its population correctly.To understand the population ecology and reproductive biology of Scomber japonicus,the current researches on Scomber japonicus populations were summarized,including population division,growth and feeding characteristics,reproductive environment conditions,fecundity and sexual maturity.Results showed that there were many methods to divide Scomber japonicus population at present,leading to different results in the same sea area.The growth and feeding of Scomber japonicus were extremely sensitive to environmental factors,and the monitoring of its population should be based on seasonality;salinity and temperature may be important factors to determine the spawning ground and spawning time of Scomber japonicus;compared with historical records,the relative fecundity of Scomber japonicus increased and the fork length of maturity decreased.A deep understanding of the population ecology and reproductive biology of Scomber japonicus will help in making rational use of Scomber japonicus resources and formulate scientific classified protection and management measures.
作者
周翰林
李建生
严利平
ZHOU Hanlin;LI Jiansheng;YAN Liping(East China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Key Laboratory of East China Sea Fishery Resources Exploitation,Ministry of Agriculture and Rural Affairs,Shanghai 200090,China;College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China)
出处
《海洋渔业》
CSCD
北大核心
2021年第6期751-760,共10页
Marine Fisheries
基金
国家重点研发计划“蓝色粮仓科技创新”重点专项(2020YFD0900800)。
关键词
日本鲭
种群生态学
繁殖生物学
种群划分
性腺等级
Scomber japonicus
population ecology
reproductive biology
population division
gonad grade