杭州湾湾口与日本有明海产花鲈稚鱼的比较研究

本文基于采自杭州湾湾口、日本有明海和四万十川沿岸碎波带的天然花鲈仔稚鱼,研究比较了三者的外部形态、脊椎骨数、背鳍和臀鳍支鳍骨数的差异。杭州湾湾口和有明海水域的花鲈样本,体侧黑色素较少;吻长、体高和体长比相对较小;脊椎骨数分别为35,35.25±0.25;背鳍支鳍骨的平均值分别为25.33,25,均比四万十川的样本脊椎骨数(36)和背鳍支鳍骨的平均值(26)为少,探明了杭州湾湾口和有明海的花鲈仔稚鱼在特征上存在着相似性,与四万十川的样本有显著的差异。根据中国产花鲈的形态特征,对中国花鲈的学名进行了探讨,认为中国花鲈的学名应该为Lateolabrax maculates(McClellan)。

A comparative study of Lateolabrax maculatus juveniles from the mouth of Hangzhou estuary and Ariake Bay, Japan

The temperate bass,Lateolabrax maculatus,collected by a seine net from the mouth of Hangzhou estuary,China,and Ariake Bay and Shimanto estuary of Japan were described and compared based on morphological characteristics,the number of vertebrae,dorsal and anal pterygiophores in postflexion larval and juvenile stage.The results were revealed that specimens from the mouth of Hangzhou estuary and Ariake Bay were very similar,not only on morphological characteristics but also on internal skeleton above.However both differed markedly from the specimens of Shimanto estuary in the pattern of pigmentations,proportion of the snout and body depth to standard length,the mean number of vertebrae and dorsal pterygiophores.These morphological characteristics proved the similarity of temperate bass from the mouth of Hangzhou estuary and Ariake Bay.There are some obvious morphological differences between the Chinese and Japanese temperate bass either the early developmental stages or adult.These morphological differences suggested that Chinese temperate bass should be distinct species.The scientific name of Chinese temperate bass should be changed to Lateolabrax maculates(McClellan).