7Radder R S, Shanbhag B A, Saidapur S K. Pattern of plasma sex steroid hormone levels during reproductive cycles of male and female tropical lizard, Calotes ver- sicolor[J]. General and Comparative Endocrinology, 2001,124(3) :285-292.
8Amey A P, Whittier J M. Seasonal patterns of plasma steroid hormones in males and females of the bearded fragon lizard, Pogona barbata[J]. General and Com- parative Endocrinology, 2000,117 (3) : 335-342.
9Mahmoud I Y, Lieht P. Seasonal changes in gonadal activity and the effects of stress on reproductive hor- mones in the common snapping turtle, Chelydra ser- pentine [J]. General and Comparative Endocrinology, 1997,107 (3) : 359-372.
10Wibbels T, Owens D W, Licht P, et al. Serum gona- dotropins and gonadal steroids associated with ovula- tion and egg production in sea turtles[J]. General and Comoarative Endocrinology, 1992,87(1) : 71-78.
