摘要
研究了真柱矛蚌、剑状矛蚌、洞穴丽蚌、角月丽蚌、三角帆蚌、褶纹冠蚌等六种蚌的育儿囊的类型和钩介幼虫的形态，应用光镜及扫描电镜对钩介幼虫的形态结构进行了观察和比较。结果表明，真柱矛蚌、剑状矛蚌、三角帆蚌、褶纹冠蚌的育儿囊为外鳃类同生型，洞穴丽蚌、角月丽蚌的育儿囊为外鳃类四生型；钩介幼虫可分为二类：真柱矛蚌、剑状矛蚌、褶纹冠蚌为有钩型，三角帆蚌、洞穴丽蚌、角月丽蚌为无钩型。一些细微结构在不同种之间也存在着差异。
Glochidia of six unionid species, Lanceolaria eucylindrica Lin, L gladiola (Heude), Lamprotula caveata (Heude), L cornuumlunae (Heude), Hyriopsis cumingii (Lea), Cristaria plicata (Leach), were studied under optical and scanning electron microscope (SEM). The materials for the study were derived from mature shells collected from Poyang Lake, Jiangxi Province in 1996-1997.The marsupia f adult Lamprotula caveata and L. cornuum-lunae are formed by joining all four demibranchia while those of the other species are formed merely with two outer demibranchia. The conglutination was observed only in two Lanceolaria species. The differences in glochidia among species are obvious. The glochidia of Lanceolaria eucylindrica, L. gladiola and C. plicata are hooked, and the rest are hookless. In the hooked forms, the glochidia of C. plicata are obviously large and each has four pairs of sensory hairs. The other two species have three pairs of sensory hairs, but L. gladiola differs from L. eucylindrica by having asymmetric shells.All hookless glochidia have semi-elliptical appearance. However, the shell surface of Lamprotula caveata has shallow pits while those of the other two have pores. Sensory hairs are also different in number. Four pairs were observed in Lam. caveata and Lam.cornuum-lunae, but only two pairs were found in H. cumingii.
出处
《水生生物学报》
CAS
CSCD
北大核心
2000年第3期252-256,共5页
Acta Hydrobiologica Sinica
基金
中国科学院分类区系特别支持经费资助
国家自然科学基金!39760015
中国科学院资源与环境研究"九五"重大项目!KZ951-A1-102-01
KZ95
