...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine ecology progress series >Generalized system of imposex and reproductive failure in female gastropods of coastal waters of mainland China
【24h】

Generalized system of imposex and reproductive failure in female gastropods of coastal waters of mainland China

机译：中国大陆沿海腹足类雌性腹足类生殖器生殖系统的广义系统

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We investigated the occurrence of imposex in gastropods from the coastal waters of mainland China from November 1999 to July 2004. Imposex was found in 30 species from 8 families, and was recorded in 20 species for the first time. In addition to the already known phenotypes of imposex expression in Cantharus cecillei, we also found aborted egg capsules in specimens with a split ventral channel (stage and type classification: S_(6c~*)) and various extensions of the proximal vas deferens (PVD). The PVD went up to or passed by the vaginal opening, and then it stopped or continued along the capsule gland. In imposex females, the penis shape and the development of the vas deferens were similar to those of the male of the same species. The morphological expressions of imposex showed diverse stages and types. Reproductive failure of females occurred in 13 species. The results suggest that imposex is widespread and severe in the coastal, waters of China. Based on our aims of ecological and morphological significance, a typical imposex classification could be further generalized for all 30 species by adding S_(6c(~*)) and 2 subdivisions of the PVD. The generalized scheme was also ascertained to be valid for several morphological variations of imposex in previous work. Sterility at S_(6c(~*)) was proven to be due to the infolding of the capsule gland wall. We thus summed up 4 mechanisms of sterility (a, b, c and ~*) in females. Furthermore, it was shown that the normal structure of the male genital system also affected the morphological expressions of imposex to some degree, which we referred to as 'effect of male structure'. Finally, we put forward a general classification scheme of imposex with an integrated system of aims, criteria, stages, types (subtypes), pathways and mechanisms of imposex.
机译：我们调查了1999年11月至2004年7月来自中国大陆沿海水域的腹足动物中的虫害的发生情况。在8个科的30种中发现了虫害，并首次记录了20种。除了在塞氏梭菌中表现出强加性表型外，我们还发现了腹壁通道分离（阶段和类型分类：S_（6c〜*））和近端输精管的各种延伸的标本中的卵囊破裂。 ）。 PVD上升或通过阴道开口，然后沿着胶囊腺体停止或继续。在雌性雌性动物中，阴茎的形状和输精管的发育与相同物种的雄性相似。 imposex的形态表达表现出不同的阶段和类型。雌性的生殖衰竭发生在13个物种中。结果表明，在中国沿海水域，胶乳病广泛而严重。根据我们具有生态学和形态学意义的目标，通过添加S_（6c（〜*））和PVD的2个细分，可以进一步对所有30种物种进行典型的imposex分类。在以前的工作中，还确定了通用方案对于imposex的几种形态变化是有效的。在S_（6c（〜*））处的无菌性被证明是由于囊腺壁的折叠所致。因此，我们总结了女性不育的4种机制（a，b，c和〜*）。此外，还显示出男性生殖器系统的正常结构也在一定程度上影响了imposex的形态表达，我们将其称为“男性结构的影响”。最后，我们提出了一般的分类表方案，该方案具有目标，标准，阶段，类型（亚型），途径和机理的综合系统。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号