Tokarz R R, McMann S, Seitz L, John-Alder H
Department of Biology, University of Miami, Coral Gables, Florida 33124, USA.
Physiol Zool. 1998 Mar-Apr;71(2):139-46. doi: 10.1086/515907.
The objective of the present study was to determine the plasma levels of testosterone and corticosterone in male Anolis sagrei during the annual reproductive cycle and to examine the relationships between seasonal change in the levels of these hormones, male reproductive activity, and body condition. Both testosterone and corticosterone levels in adult males captured in the Miami, Florida, area varied significantly with month and with season (i.e., breeding vs. nonbreeding period), although they were not significantly correlated with each other or with body mass. Mean monthly testosterone levels were higher during the breeding season (March-August) than during the nonbreeding season, with the one exception that the highest mean testosterone level occurred in February immediately before the beginning of the breeding season. Testosterone levels in the overall sample of 144 males were significantly correlated with testes mass but not with any of the other measured variables. Corticosterone levels were highest during the nonbreeding season and lowest during the breeding season. Corticosterone levels on a monthly basis were negatively correlated with monthly changes in testes mass and positively correlated with monthly changes in abdominal fat-body mass.
本研究的目的是测定雄性沙氏变色蜥在年度繁殖周期中的睾酮和皮质酮血浆水平，并研究这些激素水平的季节性变化、雄性繁殖活动和身体状况之间的关系。在佛罗里达州迈阿密地区捕获的成年雄性沙氏变色蜥的睾酮和皮质酮水平均随月份和季节（即繁殖期与非繁殖期）而显著变化，尽管它们彼此之间以及与体重均无显著相关性。繁殖季节（3月至8月）的平均每月睾酮水平高于非繁殖季节，唯一的例外是最高平均睾酮水平出现在繁殖季节开始前的2月。144只雄性的总体样本中的睾酮水平与睾丸质量显著相关，但与其他任何测量变量均无相关性。皮质酮水平在非繁殖季节最高，在繁殖季节最低。每月的皮质酮水平与睾丸质量的月度变化呈负相关，与腹部脂肪体质量的月度变化呈正相关。
