鲚属鱼类耳石形态学比较与短颌鲚物种有效性分析  

A Comparative Study of the Morphology of Otolith in Coilia Fishes and Species Validity Analysis of Coilia brachygnathus

作　　者：杨凡 刘明智 栾会妮 廖传松 王佳成 冯广朋[4] 蒋日进 徐汉祥 YANG Fan;LIU Mingzhi;LUAN Huini(Marine and Fishery Institute of Zhejiang Ocean University,Zhejiang Marine Fisheries Research Institute,Ministry of Agriculture and Rural Affairs Key Fishery Resources Scientific Observation and Experimental Station,Zhejiang Key Research Station of Sustainable Utilization for Marine Fisheries Resources,Zhoushan 316021;Weihai Marine Vocational College,Rongcheng 264300,China)

机构地区：[1]浙江海洋大学海洋与渔业研究所,浙江省海洋水产研究所,农业农村部重点渔场渔业资源科学观测试验站,浙江省海洋渔业资源可持续利用技术研究重点实验室,浙江舟山316021 [2]威海海洋职业学院,山东荣成264300 [3]中国科学院水生生物研究所,湖北武汉430072 [4]中国水产科学研究院东海水产研究所,上海200090

出　　处：《浙江海洋大学学报（自然科学版）》2023年第2期127-135,共9页Journal of Zhejiang Ocean University：Natural Science

基　　金：国家重点研发计划“蓝色粮仓科技创新”重点专项(2020YFD0900805);浙江省公益技术应用农业领域项目(LGN20C190012);浙江省农业农村厅专项(HYS-CZ-202327)。

摘　　要：利用耳石形态学方法,比较分析了3种鲚属鱼类的耳石形态,并探讨了短颌鲚的物种有效性。选择7种耳石尺寸参数与形状指标,通过配对样本t检验、主成分分析和判别分析,对刀鲚、凤鲚和短颌鲚共98尾样品进行耳石形态分析。结果显示:(1)利用耳石形态学识别3种鲚属鱼类的正确率为93.8%,证明耳石用于识别鲚属鱼类是可靠的;(2)利用耳石形态学对短颌鲚进行物种有效性分析,均数差异显著性检验显示刀鲚与短颌鲚耳石存在较大差异,但差异系数检验表明二者在耳石形态上的差异未达亚种水平,因此本研究认为短颌鲚与刀鲚属于同一物种,但因生境存在差异,二者为2种不同生态型群体。Otolith shape indices were used to analyse the morphology of Coilia fishes for species identification and Coilia brachygnathus validity.In this study,a total of 98 Coilia fishes(C.nasus,C.mystus and C.brachygnathus)were selected to analyze the morphology of otolith.And the paired sample t-test,principal component analysis and discriminant analysis were performed using seven size parameters and shape indices.The results showed that the accuracy rate of otolith morphology was 93.8%,which proved that otolith was reliable in the identification of Coilia fishes.The difference coefficient test was used to analyze the species validity of C.brachygnathus.The results showed that the differentiation of C.nasus and C.brachygnathus did not reach the level of subspecies,although the mean difference significance test indicated significant differences in otolith between them.The different geographical environments might have a great influence on the morphology of fish otolith.

关 键 词：刀鲚 凤鲚 短颌鲚 耳石形态学 物种有效性 

分 类 号：S931.1[农业科学—渔业资源]