Dallacqua R P, da Cruz-Landim C
Departamento de Biologia, Instituto de Biociências de Rio Claro (UNESP), 13506-900 Rio Claro, SP, Brazil.
Anat Histol Embryol. 2003 Oct;32(5):276-81. doi: 10.1046/j.1439-0264.2003.00484.x.
The present paper describes the ultrastructural features of seminal vesicle, post-vesicular vas deferens and ejaculatory duct of Melipona bicolor bicolor from newly emerged and mature males. Although the results do not show very consistent morphological signs of secretory activity by the epithelium of these organs, lipidic droplets and lamellar granules present in mature males' seminal vesicles and the vacuoles present in post-vesicular vas deferens are probably secretion. Besides, the spermatozoa in the lumen are immersed in a material of characteristic structure, which must be produced in superior regions of the reproductive system of immature males, not studied here. The presence of sperm cells, apparently in cytoplasm vesicles of seminal vesicle and post-vesicular vas deferens, suggests spermiophagy by their epithelium.
本文描述了新羽化和成熟雄性双色无刺蜂精囊、精囊后输精管及射精管的超微结构特征。尽管结果未显示这些器官上皮细胞有非常一致的分泌活动形态学迹象，但成熟雄性精囊中存在的脂滴和板层颗粒以及精囊后输精管中存在的液泡可能是分泌物。此外，管腔内的精子浸没在一种具有特征性结构的物质中，这种物质一定是在未成熟雄性生殖系统的上部区域产生的，本文未对此进行研究。精囊和精囊后输精管的细胞质小泡中明显存在精子细胞，这表明其上皮细胞存在噬精现象。
