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青岛沿海24种鱼类耳石秤量特征与鱼体大小关系
王英俊1,2,3, 吴莹莹1,2,3, 邹 琰1,2,3, 刘 童1,2,3, 刘洪军1,2,3, 宋爱环1,2,3
1.山东省海洋生物研究院;2.青岛市种质挖掘与利用工程实验室;3.青岛市浅海底栖重点实验室
摘要:
研究中经常会用测量耳石称量特征推算饵料鱼类的形态参数, 而青岛沿海鱼类相关的研究较少,因此作者根据2015年3、5、8月3个航次在青岛近海的拖网调查数据, 分析了捕获的24种共1 002尾鱼的耳石秤量特征(耳石长、耳石宽和耳石质量)和鱼体大小(体长、体质量)的关系。结果表明, 渔获24种鱼类分属5个目、14个科、24种鱼类的体长体质量呈显著幂函数相关, 相关系数R2的范围为0.779~0.997, 幂指数b的范围为2.376~3.591, 平均值为3.048±0.327,其中黄鲫(Setipinna taty)等11种鱼类的b值均大于3(P<0.05), 为正异速生长, 其余13种鱼类的b值小于3(P<0.05),呈负异速增长。耳石宽-鱼体长的相关性比耳石长-鱼体长的相关性要好, 仅有3种鱼(饰鳍斜棘鱼衔(Repomucenus ornatipinnis)、矛尾虾虎鱼(Chaeturichthys stigmatias)和焦氏舌鳎Cynoglossus lighti)未呈现显著相关关系。在耳石质量-鱼体质量的相关关系中, 9种鱼(如皮氏叫姑(Johnius belengerii)、扁斜棘?(Repomucenus planus)、石鲽(Kareius bicoloratus)呈显著相关(只是列举了一部分), 5种鱼(锦鳚(Pholis nebulosus)、矛尾虾虎鱼(Chaeturichthys stigmatias)、斑尾刺虾虎鱼(Synechogobius ommaturus)、焦氏舌鳎(Cynoglossus lighti))在现有样品情况下未呈现显著相关关系。
关键词:  青岛近海  鱼类  耳石  秤量特征
DOI:10.11759/hykx20180428001
分类号:
基金项目:水产经济生物种质资源数据库建立及种质评价应用(2017-2020);山东省重要海水养殖生物种质保存与技术评价研究(2016GSF115007);青岛市海洋生物种质资源发掘与利用公共服务平台(2016-2018)
Relationship between fish size and otolith measurements for fish species caught in the coast of Qingdao, China
WANG Ying-jun,WU Ying-ying,ZOU Yan,LIU Tong,LIU Hong-jun,SONG Ai-huan
Abstract:
Fish size could be estimated using otolith measurements, therefore, 24 fish species that were caught by coastal trawling during the investigation of the Qingdao coastal trawl in March, May, and August 2015 were investigated in this study. The relationships between otolith measurements (otolith length, otolith width, and otolith weight) and fish size (body length and body weight) were analyzed to provide some basic data for further research in fish feeding ecology and nutrient dynamics. The relationships between otolith size (otolith length and otolith width) and fish length and the relationships between otolith weight and fish weight were also estimated for 24 fish species caught by seasonal bottom trawl surveys in the coast of Qingdao on the west coast of the south Yellow Sea. Results showed that the coefficient of regression in the length–weight relationship functions ranged from 2.376 to 3.591, with the mean value of b being 3.048 ± 0.327. Regression analysis indicated that most of the regressions between otolith measurements and fish length were extremely significant. Based on the value of R2 in different functions of the same species, the regression functions of otolith width to fish length fit better than the functions of otolith length to fish length for the majority of fish species. The regressions between otolith weight and fish weight were extremely significant in 9 species among all specimens (Johnius belangerii, Repomucenus planus, Platichthys bicoloratus) and extremely nonsignificant in another 5 species (Chaeturichthys stigmatias, Synechogobius ommaturus, Cynoglossus lighti), which might be related to the body growth pattern and the length–weight relationships of the fish.
Key words:  coast of Qingdao  fish  otolith  measurements
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