A light and electron microscopical study of the spermathecae and ventral receptacle of Anastrepha suspensa (Diptera: Tephritidae) and implications in female influence of sperm storage
A light and electron microscopical study of the spermathecae and ventral receptacle of Anastrepha suspensa (Diptera: Tephritidae) and implications in female influence of sperm storage
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DOI：
10.1016/s1467-8039(01)00038-x
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发表时间：
2002-06-01
影响因子：
2
通讯作者：
Turner, FR
中科院分区：
文献类型：
--
作者：
Fritz, AH;Turner, FR
具有多个精子储存器官的雌性昆虫可能会通过与竞争的雄性昆虫的精子储存差异来影响父子关系模式。加勒比果蝇 Anastrepha suspensa 的精子储存方式与它的三个受精囊不同。为了了解悬吊精子储存和使用模式的机制和过程，通过紫外光显微镜、共聚焦显微镜、组织切片以及扫描和透射电子显微镜解析了雌性精子储存器官的精细结构细节。先前未描述过的该物种的结构包括用于精子储存和渗透调节的腹侧容器、受精囊囊与其导管之间连接处的圆锥形瓣膜、层状和颗粒状分泌物、来自指征的分泌物、受精囊周围的血细胞以及具有终止于单个腺细胞的硬化中空突起的受精囊。精子储存器官、受精囊管、相关肌肉组织、腺细胞和神经支配的独立组织提供了精子运动可能受到雌性影响的可能机制。讨论了这些结构对授精和受精事件的影响。 (C) 2002 Elsevier Science Ltd. 保留所有权利。
Female insects with multiple sperm storage organs may potentially influence patterns of paternity by differential storage of sperm from competing males. The Caribbean Fruit Fly, Anastrepha suspensa, stores sperm differentially with respect to its three spermathecae. To understand the mechanisms and processes responsible for patterns of sperm storage and use in A. suspensa, details of the fine structure of female sperm storage organs were resolved by UV-light microscopy, confocal microscopy, tissue sectioning, and scanning and transmission electron microscopy. Structures not previously described for this species include a ventral receptacle for sperm storage and osmoregulation, a conical-shaped valve at the junction between the spermathecal capsules and their ducts, laminar and granular secretions, secretions from the signum, hemocytes surrounding the spermathecae, and spermathecae with sclerotized, hollow projections that terminate in single glandular cells. The independent organization of sperm storage organs, spermathecal ducts, associated Musculature, gland cells, and innervation offer possible mechanisms by which sperm movement may be influenced by females. The implications of these structures for insemination and fertilization events are discussed. (C) 2002 Elsevier Science Ltd. All rights reserved.