吕四渔场黄鲫耳石形态及日龄分析  

Sagittal otolith morphology and daily increment analysis of Setipinna taty from Lüsi Fishing Ground

作　　者：张健[1,2] 刘必林[1,2] 陈小康[1] 彭永章 

机构地区：[1]上海海洋大学海洋科学学院,上海201306 [2]上海海洋大学大洋渔业资源可持续开发省部共建教育部重点实验室,上海201306 [3]江苏省启东市海洋与渔业局,江苏启东226200

出　　处：《上海海洋大学学报》2011年第3期412-416,共5页Journal of Shanghai Ocean University

基　　金：国家科技支撑计划(2006BAD09A05);国家自然科学基金(NSFC31001138);上海海洋大学博士科研启动基金(B-8202-08-0289);上海市重点学科建设项目(S30702);上海市教育教员会科研创新项目(11YZ156)

摘　　要：根据2009年5月在吕四渔场单桩张网采集的231尾黄鲫幼鱼,对其耳石形态和储存信息进行分析。结果显示,耳石全长范围为1.88~4.91 mm,平均3.75mm;耳石重量范围为0.8~13.7 mg,平均6.4 mg。黄鲫耳石全长和叉长拟合生长方程为LOA=2.6322 ln（L）-8.2612。耳石全长与耳石重量关系式为WO=0.196×LOA-2.6186。黄鲫年龄范围为60~258 d,优势年龄组为90~150 d,占总体的69.5%;叉长与年龄拟合线性生长方程为L=0.2034×A＋69.12。孵化日期为1月至3月,主要集中在2月份,占总体的83.6%。研究亮点：首次使用耳石微结构观察对春季黄海南部传统张网作业渔场的黄鲫渔获进行了耳石形态和日龄分析,结果显示渔获个体均未达到1龄,日龄范围60~258 d,平均日龄133 d,为反映目前黄鲫资源呈低龄化趋势提供了一定的佐证。231 Setipinna taty individuals were sampled by single-stake stownet fishery from Lüsi Fishing Ground in the south of the Yellow Sea to analyze sagittal otolith morphology and information contained.The results indicated that the otolith length ranged from 1.88 to 4.91 mm with mean of 3.75 mm and otolith weight ranged from 0.8 to 13.7 mg with mean of 6.4mg.Observation of the otoliths of Setipinna taty showed that the growth equation was fitted by the all otolith length（LOA,mm） and fork length as follows,LOA=2.6322 ln（L）-8.2612.The relationship between LOA and otolith weight（WO,mg） was WO=0.196×OAL-2.6186.It is induced that the age range of the Setipinna taty individuals measured was 60-258 days,in which 90~150 days dominated the age range,accounting for 69.5%.The linear growth equation between fork length and age（day） was L=0.2034×A＋69.12.The estimated hatch dates of Setipinna taty in the south of the Yellow Sea were distributed between January and March and 83.6% concentrated in February.

关 键 词：黄鲫 吕四渔场 叉长 矢耳石 年龄 

分 类 号：S931.1[农业科学—渔业资源]