Estimation of Age,Growth and Maturation of Purpleback Flying Squid,Sthenoteuthis oualaniensis,in Bashi Channel,Central Pacific Ocean

作     者：LIU Bilin LIN Jingyuan FENG Chunlei LI Jianhua SU Hang 

作者机构：College of Marine SciencesShanghai Ocean University East China Sea Fisheries Research InstituteChinese Academy of Fishery Sciences 

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

年 卷 期：2017年第16卷第3期

页      面：525-531页

核心收录：

学科分类：0908[农学-水产] 09[农学] 

基　　金：supported by the Natural National Science Foundation of China (Nos. 41306127 and 41276156) the Innovation Program of Shanghai Municipal Education Commission (No.13YZ091) the Ph.D Programs Foundation of Ministry of Education of China (No. 20133104120001) Shanghai Universities First-class Disciplines Project (Fisheries A) 

主　　题：Sthenoteuthis oualaniensis central Pacific Ocean statolith age growth maturation 

摘      要：The age, growth and maturation of Sthenoteuthis oualaniensis were determined with statolith data collected with a light purse seine from the Bashi Channel of central Pacific Ocean. The estimated longevity of the squid was no more than 6 months for females, and no more than 5 months for males. Growth in mantle length(ML) was best described by logistic models for both females and males, while growth in body weight(BW) was best fitted by power curves. The maximum absolute growth rate(AGR) and instantaneous growth rate(IGR) in ML or BW both occurred at 91–105 days for females and 76–90 days for males. Back calculated hatching dates were from October to January, with a peak in December, although the short duration of sampling date might have had an influence on the result. The lower percentage of mature females(37.2%) suggested that the study area during the sampling date was not a spawning ground for the species. Size and age at first maturity were 183 mm ML and 136 days for females, whereas they were 156 mm ML and 85 days for males.