摘要
对美洲鲥的外部形态和内部结构进行了观察。结果表明,美洲鲥侧扁,呈纺锤形,被圆鳞;脂眼睑发达,遮住眼的一半,鳃后具4～9个黑斑;鳃耙长而细密,第一鳃弓鳃耙数27+44;侧线不发达,侧线鳞50～55枚;胃呈"Y"形,盲囊部膨大,幽门盲囊63～67条,肠不盘曲,短于体长。
According to vivisecting results of American shad, the morphological characteristics and the internal structure of Alosa sapidissima are described. The body shape is spindly with cycloid scales. Adipose eyelid is well developed and shades half of the eye.4-9 black maculas can be found behind operculum. Lateral line with 50-55 lateral line scales is not developed well. Gill rakers are slender and dense, the first gill has 27＋44 gill rakers. The shape of stomach is ＂Y＂ with a bulgy submucous layer and 63-67 pyloric caecas. Intestine without curling is shorter than the length of body.
出处
《湖北农业科学》
北大核心
2008年第7期822-823,共2页
Hubei Agricultural Sciences
基金
天津市科技攻关项目(06YFGZNC02400)
关键词
美洲鲥
形态特征
内部结构
Alosa sapidissima
morphological characteristics
internal structure
