Abstract: The special expression of c-kit protein in gametogenesis of Aiolopus tamulus (Fabricius) and Trilophidia annulata (Thunberg) collected from Siping, Jilin, Northeast China was studied by using immunohistochemistry and biostatistics. The results showed that: (1) In spermatogenesis, there were different expression levels of c-kit protein in spermatogonia, primary spermatocytes, second spermatocytes and mature sperms, and the biggest positive granules were found at the end of spermary; (2) In oogenesis, there were different expression levels of c-kit protein from the 1st to 6th stage of oocytes, and the positive granules gradually disappeared in vitellogenesis; (3) The expression of c-kit protein in gametogenesis was significantly different between the two species.

Key words: Aiolopus tamulus, Trilophidia annulata, gametogenesis, c-kit protein, special expression