三种前鳃亚纲海产腹足类性畸变现象的组织学研究

有机锡污染可以导致海产腹足类雌性个体产生性畸变现象。本文报道了阿文绶贝(Mauritia arabica)、褐棘螺(Chicoreus brunneus)和桶形芋螺(Conus betulinus)三种前鳃亚纲腹足类正常雄性个体和性畸变个体雄性生殖器官的组织学结构。结果表明,不同种间雄性个体的输精管和阴茎的结构存在开放和封闭两种类型,封闭型是由开放型进化而来。虽然性畸变个体的雄性生殖器官与正常雄性个体的在组织结构上无明显差异,但性畸变个体的雄性生殖器官并不完整,无法行使生殖功能。由于内分泌扰乱物质对人和动物影响的相似性,使得海产腹足类性畸变现象应受到人们的重视。

Histological studies on imposex of three marine prosobranchs

Imposex of marine temale gastropods is induced by the pollution of organotin compounds. The present study reported the histological characters of male sex organs from male and imposex individuals of prosobranchs Mauritia arabica, Chicoreus brunneus and Conus betulinus. There were two types of vas deferens and penis found among the species, one is open,and another is closed. Based on the present and previous studies, the closed type evolves from the open. Although no significant differences were histologically observed in male sex organs between male and irnposex individuals, imposex individuals do not have male reproductive function because of its incomplete male genital system, e.g., lack of testis and prostate. Since endocrine disrupting chemicals have more or less similar effects on human and animals, we should attach great importance to imposex of marine gastropods.