The female genitalic morphology of "micronetine" spiders (Araneae, Linyphiidae)
The female genitalic morphology of "micronetine" spiders (Araneae, Linyphiidae)
复制标题
“微网”蜘蛛（Araneae、Linyphiidae）的雌性生殖器形态
DOI：
10.1007/s10709-009-9368-9
复制
发表时间：
2010-01-01
期刊：
影响因子：
1.5
通讯作者：
Hormiga, Gustavo
中科院分区：
文献类型：
--
作者：
Tu, Lihong;Hormiga, Gustavo
目前的知识“微”女性生殖器几乎完全是基于透射光显微镜数据。因此，我们对上雌蕊解剖的理解是不完整的，有些误导，在某种程度上，它阻碍了linyphiid多样性的比较研究。我们用扫描电子显微镜（SEM）研究了“微蜘蛛”蜘蛛复杂的上雌蕊形态。软组织的酶消化使我们能够使用SEM详细检查内部几丁质化结构。一个分类样本的9个物种被选中代表的形态生殖器的多样性女性“micronetines”（包括一个成员的Erigoninae分支）。结果表明，上雌蕊由珠被褶皱形成的一对沟（交配沟和受精沟）组成。突出的上雌蕊区域被凹槽分为腹侧和背侧板;两个板可以被修改以形成上雌蕊腔和/或花葶。我们的观察证实了广泛发生的epigynal沟，而不是管道，在“micronetines”。上雌蕊沟似乎是常见的linyphioids和其他蜘蛛群。
Current knowledge of "micronetine" female genitalia is almost exclusively based on transmitted light microscopy data. As such, our understanding of the epigynal anatomy is incomplete and somewhat misleading, to the extent that it hinders comparative studies of linyphiid diversity. We used scanning electronic microscopy (SEM) to study the complex epigynal morphology of "micronetine" spiders. Enzymatic digestion of soft tissues allowed us to examine the internal chitinized structures in detail using SEM. A taxonomic sample of nine species was selected to represent the morphological genitalic diversity of female "micronetines" (including one member of the Erigoninae clade). Results reveal that the epigynum consists of a pair of grooves formed by integument folds (copulatory and fertilization grooves). The protruding epigynal region is divided into a ventral and a dorsal plate by the grooves; both plates can be modified to form an epigynal cavity and/or a scape. Our observations confirm the widespread occurrence of epigynal grooves, rather than ducts, in "micronetines". Epigynal grooves seem to be common in linyphioids and other spider groups.