钩介幼虫

结果表明：在水温20℃-23℃时，受精卵发育为膜内钩介幼虫需11d；

It was found that , when the water temperature ranged from 20 ℃ to 23 ℃, the embryonic development from oosperm to mature glochidia took 11 days .

结果表明：钩介幼虫适合在中性及弱碱性条件下生存。

The results showed that the glochidia were adaptable to neutral and weak basic environment .

钩介幼虫壳表面结构的扫描电镜观察

Observation on Shell Surface of Glochidia of Two Freshwater Mussel Species ( Unionidae ) by SEM

在高密度寄生过程中寄生次数对钩介幼虫寄生数量有极显著影响。

The parasitic quantity is significantly influenced by the parasitic times in the high dense parasitic course .

另外，生活在不同区域的同一种蚌类，其钩介幼虫的形态结构也具有明显差异。

Moreover , the differences in glochidia were also obvious for the same species in different regions .

圆背角无齿蚌在变态发育过程中其外部形态、内部器官、营养源发生了较大变化：成熟的钩介幼虫仅仅可以作简单的双壳开合运动；

During metamorphosis development , A. wp would change greatly in the external form , internal tissues and nutrient source .

三角帆蚌钩介幼虫在两种寄主鱼上的寄生效果及其对寄主鱼血浆生化指标的影响

The Host Efficiency of Two Kinds of Fish for Glochidia of Hyriopsis cumingii and Impact on Plasma Biochemical Indexes of Host Fish

以寄生在每尾鱼鳃上的钩介幼虫的数量为基础，分析了钩介幼虫寄生密度与寄生时间对宿主鱼鳃上寄生数量的影响；

On the basis of the parasitic number of glochidia in every host-fish 's gills , we analyzed how the parasitic densities and parasitic times affected the glochidia 's parasitic number in the host-fish 's gills ;