知识与财富的链接
应用显微镜和扫描电子显微镜对三角帆蚌钩介幼虫不同发育阶段即排入水中未附着阶段、附着于宿主鱼体（黄颡鱼）阶段及从宿主鱼体脱落后阶段的形态变化进行了观察.结果表明：三角帆蚌钩介幼虫不同发育阶段壳高、壳长及铰合部增长速度有差异.钩介幼虫未附着阶段腹面有钩,附着阶段侧面观半椭圆型,壳腹缘无钩,有稍突出的嵴和两片与腹缘相连的薄翼,嵴和翼表面分布小而密的棘刺,未形成大而粗壮的钩;在此阶段幼虫足丝消失,内部器官逐渐形成.
The variation of morphology about the glochidia of Hyriopsis curningii which went into the water parasitized in the gill of fish(yellow catfish) falled off the host fish was observed through optical microscope and scanning electron microscope.The results showed: the growth rate of the length and height of the shell and length of the intertwisting part were different.Under the scanning electron microscope,the glochidia of Hyriopsis cumingii had hook in the belly during the water,but the hook disappeared in the host fish.The glochidia had a little ridge and two thin wing which linked with the edge of belly,thick and little thornies were distributed over the ridge and wings.The silk of the feet of the glochidia disappeared and the interior apparatus formed gradually.
