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用扫描电镜技术研究了体表寄生物对日本沼虾 (Macrobrachiumnipponense)受精卵 (胚胎 )附着的影响 ,发现在流产个体 1～ 4对腹肢原肢与内肢的表面密布钟虫类原生动物 ,这些寄生原生动物影响粘液腺的分泌活动 ,使其不能正常分泌粘液 ,受精卵的被膜、卵柄及卵索均不能正常形成 ,卵与卵之间的摩擦力加大 ,胚胎供氧困难 ,最终导致死胎和流产 ,体表寄生物是造成养殖日本沼虾胚胎提早脱落的重要原因之一
The effects of surface parasites on the zygotes of embryo of Macrobrachium nipponense were studied by scanning electron microscopy. It was found that in the abortion group, the protozoan beetles, These parasitic protozoa affect mucus gland secretion activity, so that it can not normally mucus secretion, the fertilized egg film, the egg stalk and egg line can not be normal, the friction between eggs and eggs increased, embryo oxygen supply difficulties, and ultimately Lead to stillbirth and miscarriage, body surface parasites is one of the important reasons for the early embryo shedding of Japanese marsh shrimp