Studies on Sexual Hormone Variance in Blood of Three Kinds of Testudoformes in Different Periods

The present paper concerns the variance of the sexual hormone in blood of three kinds of TESTUDOFORMES in different periods.The conclusions may be summarized as follows:1.With regard to the three kinds of male animals,the amount of sexual hormone in blood plasma of Clemmys mutica is the highest (304.46±292.15 ng/dl),whereas Trionyx sinensis Wiegmann is the lowest (122.31±64.44 ng/dl).2.With regard to female animals,the amount of sexual hormone in blood plasma of Trionyx sinensis Wiegmann is the highest (75.93±67.35 pg/ml),whereas Chinemys reevesii is the lowest (50.16±35.75 pg/ml).3.Since the amount of testosterone in blood of male animals in the mating period is larger than that of in the non-mating period,it is suggested that the testosterone is related to the formation of sperms.4.The amount of estradiol in female ones is always changed with the development of ovarion cycle.