亚历山大糙卷潮虫（甲壳纲，等足目）头部及第一腹节分泌器官和感觉器官的精细结构

Fine structure of the secretory and sensory organs on the cephalon and the first pereionite of Trichoniscus alexandrae Caruso (Crustacea, Isopoda).

作者信息

Lombardo B M, Fanciulli P P, Grasso R, Cicconardi F, Caruso D, Dallai R

机构信息

Department of Animal Biology, University of Catania, Via Androne 81, I-95100 Catania, Italy.

出版信息

Tissue Cell. 2006 Apr;38(2):99-110. doi: 10.1016/j.tice.2005.12.005. Epub 2006 Feb 17.

DOI:10.1016/j.tice.2005.12.005

PMID:16487556

Abstract

Trichoniscus alexandrae Caruso is a blind troglobiont isopod; males possess secretory and sensory organs on the cephalon and 1st pereionite consisting of cuticular pits hosting a tuft of setae and gland openings. Such organs are absent in females. Three types of cuticular structures have been observed: (a) lamellar setae, which likely play a role in protecting the gland openings and favouring the evaporation of secretions; (b) contact chemoreceptors, each provided with six bipolar sensory cells, a scolopale cell and enveloping cells; (c) a secretory cell complex, consisting of a long cylindrical slender duct-forming cell, with the function of transporting to the cuticular surface a secretion produced by two deeper secretory cells. The duct-forming cell is characterized by the presence of numerous microtubules in its cytoplasm, and is provided with a flattened duct. It is suggested that the secretion produced by the secretory cells could serve for sex-recognition.

摘要

亚历山德拉糙虾是一种无眼洞穴等足类动物；雄性在头部和第一腹节上具有分泌和感觉器官，这些器官由容纳一束刚毛和腺体开口的表皮坑组成。雌性没有这类器官。已观察到三种类型的表皮结构：（a）片状刚毛，可能在保护腺体开口和促进分泌物蒸发方面发挥作用；（b）接触化学感受器，每个化学感受器都有六个双极感觉细胞、一个围鞘细胞和包被细胞；（c）一个分泌细胞复合体，由一个长圆柱形的细长导管形成细胞组成，其功能是将两个较深的分泌细胞产生的分泌物输送到表皮表面。导管形成细胞的特征是其细胞质中存在大量微管，并具有一个扁平的导管。有人认为，分泌细胞产生的分泌物可能用于性别识别。