Otolith Microstructure Analysis Reveals Different Growth Histories of Japanese Sardine (Sardinops melanostictus) in the Oyashio Waters

作     者：LIU Chunlin ZHANG Chi TIAN Yongjun WANG Liangming LIN Longshan LI Yuan WATANABE Yoshiro LIU Chunlin;ZHANG Chi;TIAN Yongjun;WANG Liangming;LIN Longshan;LI Yuan;WATANABE Yoshiro

作者机构：Key Laboratory of MaricultureMinistry of EducationOcean University of ChinaQingdao 266003China Frontiers Science Center for Deep Ocean Multispheres and Earth System(FDOMES)Ocean University of ChinaQingdao 266100China Laboratory for Marine Fisheries Science and Food Production ProcessesPilot National Laboratory for Marine Science and TechnologyQingdao 266237China Third Institute of OceanographyMinistry of Natural ResourcesXiamen 361000China Atmosphere and Ocean Research InstituteThe University of TokyoKashiwa 277-8564Japan 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2022年第21卷第1期

页      面：236-242页

核心收录：

学科分类：0908[农学-水产] 09[农学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.41930534,41861134-037,and 41876177) funding to the Third Institute of Oceanography through the National Program on Global Change and Air-Sea Interaction(No.GASI-02-PAC-YDaut) 

主　　题：Sardinops melanostictus otolith microstructure growth history unsupervised random forest clustering recruitment 

摘      要：After decades of low year classes,the stock of Japanese sardine(Sardinops melanostictus)has begun to recover since the *** hatch dates and otolith growth rates of age-0 juvenile sardine,which were collected in the subarctic Oyashio waters in autumn 2018,were determined from an otolith microstructure *** sardines were hatched from late January to late April,while mostly in February and *** otolith growth rate increased continuously up to 60 d after hatching and thereafter *** revealed growth rate in a crucial growth period is faster than that reported for juvenile sardines collected in the 1990s,which is coincided with the recent recovery trend of the sardine *** groups with different hatch dates,growth histories,and migration routes were identified using unsupervised random forest clustering *** were considered inshore and offshore migration individuals in accordance with recent *** the offshore group,a high proportion of sardine juveniles hatched late and grew faster in the Kuroshio-Oyashio transitional waters,a finding consistent with the hypothesis of growth-rate-dependent *** finding on the population composition and growth rate of juvenile sardine in the Oyashio waters can be a basis for an improved prediction of their survival and provides us with valuable information on the recruitment processes of this stock during the period of stock recovery.