久效磷对中国对虾细胞超微结构的影响Ⅲ.对鳃的毒性效应

Effect of monocrotophos on ultrastructure Penaeus chinensis cells Ⅲ. Toxicity to gill.

对中国对虾鳃细胞超微结构的透射电镜观察结果表明 ,经 0 .1 0mg·L- 1 久效磷处理的中国对虾 ,鳃丝细胞的内质网水肿、扩张和囊泡化 ,粗面内质网膜上的核糖体颗粒大量脱落 ;高尔基膜囊轻微水肿 ,高尔基小泡水肿扩张 ,严重者破裂 ;线粒体的内嵴膨胀 ,局部瓦解乃至解体 ;鳃丝上皮细胞角质层变性脱落 ,核膜水肿 ,部分溶解 .

Electron microscopic examination shows that after treated with 0.10 mg·L -1 monocrotophos for 96 hours, the gill cell of Penaeus chinensis has an obvious ultrastructural variation:the parallel, ordered structure of muscle fibres is destroyed,endoplasmic reticulum is swollen up, dilated and vesiculated,and ribosomes on the surface of RED is chipped away in large numbers. In golgi body, the dictyosomes is swollen up,and vesicles is dilated and even broken up. Cristaes in mitochondria is slightly swollen up, and disintegrated partially. Cuticle of gill fibre is denatured and dropped off, and nuclear membrane is swollen up and partially dissolved.