基于角质颚微结构的剑尖枪乌贼的日龄与生长  

Age and Growth of Swordtip Squids Based on Microstructure of Beaks

作　　者：林静远[1] 刘必林[1,2,3,4] 王立权 LIN Jingyuan;LIU Bilin;WANG Liquan(College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China;National Distant-Water Fisheries Engineering Research Center,Shanghai 201306,China;The Key Laboratory of Sustainable Exploitation of Resources,Ministry of Education,Shanghai 201306,China;Collaborative Innovation Center for Distant-Water Fisheries,Shanghai 201306,China;School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]国家远洋渔业工程技术研究中心,上海201306 [3]大洋渔业资源可持续开发教育部重点实验室,上海201306 [4]远洋渔业协同创新中心,上海201306 [5]华东理工大学材料科学与工程学院,上海200237

出　　处：《华东理工大学学报（自然科学版）》2019年第5期775-782,共8页Journal of East China University of Science and Technology

基　　金：国家自然科学基金(41306127,41276156);上海市自然科学基金(13ZR1419700)

摘　　要：首先利用回归分析方法研究了剑尖枪乌贼的角质颚各部长度与其胴长、体重和日龄的关系。结果表明,角质颚的大部分长度与剑尖枪乌贼的胴长和体重分别呈对数和乘幂关系;剑尖枪乌贼的胴长、体重与日龄呈指数关系,体重生长特征时间τW(增长到e倍所需的时间)约为胴长生长特征时间τL的1/3;运用人工神经网络方法构建了角质颚各部长度与胴长、体重和日龄的定量关系,提升了利用角质颚各部长度预测胴长、体重和日龄的精度,相关系数R2大于0.95。Swordtip squid (uroteuthis edulis) is an important kind of cephalopods in China.Insight into the law that governs its growth is a crucial research direction in the field of fishery biology.Because most of the cephalopods can only live for one year,researchers usually receive many difficulties during studying the age and growth of the Swordtip squids.Beaks,containing a lot of ecological information,are a kind of the most important hard tissues of the cephalopods.In this work,we first present a study on the relationships between the lengths of various parts of the beaks and the mantle length,body weight and age of the swordtip squids by regression analysis,respectively.The study is based on 32 samples collected from the March 23 in 2015 in the fishing areas of Pearl River Estuary.It was found that the lengths of various parts of the beaks showed logarithmically dependence on the mantle length.The relations between the body weights and the lengths of various parts of the beaks mainly fit a power law.The mantle length and body weight show a typical exponential growth as a function of the age;and the characteristic time τW for the growth of body weight is about one third of that,τL,for the growth of the mantle length.The age of the samples is ranged from 91 d to 268 d and the spawning time is between September and October.We further established the relation between the lengths of various parts of the beaks and the mantle length,body weight and age of the swordtip squids,respectively,by artificial neural networks.The precision of the prediction can be greatly improved as compared to the regression analysis.

关 键 词：剑尖枪乌贼 角质颚 生长 人工神经网络 

分 类 号：Q954.33[生物学—动物学]