[Objective]Seasonal breeding animals exhibit annual periodic changes in gonadal morphology,physi-ological hormones levels and gene expression,which can improve reproductive efficiency and offspring survival rate.This study aims to explore the seasonal characteristics of spermatogenesis-related gene expression in male plateau zo-kors.[Method]We analyzed testicular morphology,serum hormones levels and testiculis-specific genes between breeding season and non-breeding season in plateau zokors.[Result]During the breeding season,male plateau zokor testes increased in size,testosterone levels were elevated,and a variety of germ cells were present in seminiferous tubles.The expression levels of specific genes were upregulated in primary spermatocytes,secondary spermatocytes,haploid spermatocytes and sperm.In contrast,during the non-breeding season,the testes were small and the level of testosterone were insufficient.The expression levels of specific genes were downregulated in primary spermatocytes,secondary spermatocytes,haploid spermatocytes and sperm.[Conclusion]Our findings indicate seasonal differences in testicular morphology,hormone and gene expression of plateau zokor.Spermatogenesis arrest at the spermatogonia stage during the non-breeding season.These results provide a valuable insight for into the mechanisms of testicular ac-tivity,and understanding the regulation of seasonal reproduction of animals.
维普
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