尖唇散白蚁工蚁和繁殖蚁卵子发生比较

为探讨白蚁工蚁品级性腺不育的原因,采用组织学观察与测量对尖唇散白蚁Reticulitermes aculabialis Tsai et Hwang的工蚁和繁殖蚁的卵子发生各阶段进行比较和分析。结果表明,成熟工蚁的卵子发生与繁殖蚁相比,仅有卵母细胞的分化期和生长期,没有卵黄形成期,其分化期和生长期的卵母细胞大小与繁殖蚁这2个时期的卵母细胞大小呈显著性差异;生长期时,工蚁的卵母细胞和滤泡细胞之间出现较大间隙并且呈现萎缩退化状态;工蚁卵子发生相当于雌性繁殖蚁末龄若虫水平。该结果将为工蚁不能生殖提供组织学上的证据,同时又表明了工蚁具有潜在生殖能力的结构基础。

Comparative study on the oogenesis between workers and queens of Reticulitermes aculabialis

In order to explore the reason of sterility of worker termites, the histological changes in ovarian development of workers and queens of Reticulitermes aculabialis Tsai et Hwang were observed with optics microscope. The results showed that compared with queens, there were only differentiation stage and growth stage in the oogenesis of workers, and not had yolk forming stage. The size of oocyte in these two stages between workers and queens was significantly different. In growth stage, there was a greater internal between oocytes and follicular cells in worker, and oocytes were atrophic. The oogenesis in workers was similar to the level of last nymph. These results would provide the histological evidence for the explanation of sterility of worker termite, and the these also showed that workers had potetial reproductive structure.