罗源湾及九龙江口美肩鳃鳚仔、稚鱼的新记录

Larvae of Omobranchus elegans (Steindachner) Found in Luo Yuan Bay and Jiulong River, Estuary Fujian

研究了罗源湾和九龙江口美肩锶鲥仔、稚鱼的形态特征,时空分布及其与环境的关系,美肩锶鲥不仅分布在黄海和渤海,南海和东海也有分布。仔稚鱼的主要特征:眼大、吻短、稍突出、头高、体中等延长,左右侧肩,头顶包一骨质冠,头冠左右两侧及左右眼眶上有骨嵴,前锶盖骨隅角具一强棘,以上构造都着生小刺,前鳃盖骨后缘有4枚小棘突,腹囊大,背面具黑色素点,肌节37～45(8-12+28-32),背鳍一个,延长,胸鳍大,腹鳍喉位,背、臀鳍的两支鳍骨之间有尖三角形骨片。

The larvae of Ombnanchus elegans was for the first time recorded from the coaxtai waters of Fujian Province, China, The Morphological features of the larvae and juveniles of O. elegans and its temporal and spatial distribution in relation to the environmental conditions were studied. A comparison with the species composition of fishes of the neighbouring seas reveals that the species, distributed not only in Yellow Sea and Bohai, But also in the South China Sea and East China Sea,is common to the China Seas,Owing to the difference in the ecological conditions, both of the features and the sige of specimen collected from the Luo Yuan Bay and the estuary of Juilong River were slightly different. The main features of the larvae and juveniles were described in detail.