Fritz Ann H, Turner F R
Department of Biology and Center for the Integrative Study of Animal Behavior, Indiana University, 1001 E. 3rd St., Bloomington, IN 47405-3700, USA.
Arthropod Struct Dev. 2002 Jun;30(4):293-313. doi: 10.1016/s1467-8039(01)00038-x.
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.
具有多个精子储存器官的雌性昆虫可能会通过对竞争雄性的精子进行差异化储存来潜在地影响父权模式。加勒比果蝇（Anastrepha suspensa）会根据其三个受精囊对精子进行差异化储存。为了了解负责加勒比果蝇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对雌性精子储存器官的精细结构细节进行了研究。该物种先前未描述过的结构包括用于精子储存和渗透调节的腹侧贮精器、受精囊囊体与其导管连接处的锥形瓣膜、层状和颗粒状分泌物、精栓分泌物、围绕受精囊的血细胞以及带有硬化空心突起并终止于单个腺细胞的受精囊。精子储存器官、受精囊导管、相关肌肉组织、腺细胞和神经支配的独立组织提供了雌性可能影响精子移动的潜在机制。文中讨论了这些结构对授精和受精事件的影响。
