Spatio-temporal distribution of Konosirus punctatus spawning and nursing ground in the South Yellow Sea  

作　　者：Xiangyu Long Rong Wan Zengguang Li Yiping Ren Pengbo Song Yongjun Tian Binduo Xu Ying Xue 

机构地区：[1]Fisheries College,Ocean University of China,Qingdao 266003,China [2]College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China [3]National Engineering Research Center for Oceanic Fisheries,Shanghai Ocean University,Shanghai 201306,China [4]Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources,Shanghai 201306,China [5]Laboratory for Marine Fisheries Science and Food Production Processes,Pilot National Laboratory for Marine Science and Technology(Qingdao),Qingdao 266237,China

出　　处：《Acta Oceanologica Sinica》2021年第8期133-144,共12页海洋学报（英文版）

基　　金：The Public Science and Technology Research Funds Projects of Ocean under contract No.201305030;the National Natural Science Foundation of China under contract No.41930535。

摘　　要：In recent years,Konosirus punctatus has accounted for a large portion in catch composition and become important economic species in the South Yellow Sea.However,the distribution of K.punctatus early life stages is still poorly understood.In this study,generalized additive models with Tweedie distribution were used to analyze the relationships between K.punctatus ichthyoplankton and environmental factors(longitude and latitude,sea surface temperature(SST),sea surface salinity(SSS)and depth),and predict distribution K.punctatus spawning ground and nursing ground,based on samplings collected in 6 months during 2014–2017.The results showed that K.punctatus’spawning ground were mainly distributed in central and north study area(from 33.0°N to 37.0°N).By comparison,the nursing ground shifted southward,which were approximately located along central and south coast of study area(from 31.7°N to 35.5°N).The optimal models identified that suitable SST,SSS and depth for eggs were 19–26℃,25–30 and 9–23 m,respectively.The suitable SSS for larvae were 29–31.The K.punctatus spawning habit might have changed in the past decades,which was a response to increasing SST and fishing pressure.That needs to be proved in further study.The study provides references of conservation and exploitation for K.punctatus.

关 键 词：the South Yellow Sea Konosirus punctatus generalized additive model(GAM) Tweedie distribution spawning ground nursing ground 

分 类 号：Q958[生物学—动物学]