Tumkiratiwong Panas, Poothong Songklod, Taksintum Wut, Suekkhachat Hataitip, Kanchanabanca Pongvarut, Suwapat Phongpipat
1 Animal Systematics and Ecology Speciality Research Unit (ASESRU), Department of Zoology, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand.
Zoolog Sci. 2013 Dec;30(12):1070-80. doi: 10.2108/zsj.30.1070.
We monitored annual fecal sex hormones and reproductive displays of five individuals of males and females Thai sarus crane (Grus antigone sharpii), a flock of five males and females black-headed Ibis (Threskiornis melanocephalus), and five pair bonded lesser adjutant stork (Leptoptilos javanicus), all maintained in captivity at Bangprha Waterbird Breeding Research Center. Reproductive behaviors were observed during 0600-1800 h, for four days during the second week of each month and feces were collected monthly to determine annual male total testosterone (mTT) and female estradiol (fE2) levels by radioimmunoassay. Thai sarus crane exhibited a peak mTT in August following a fE2, with a surge in July. Black-headed ibis demonstrated a peak mTT in January prior to a fE2 with a surge in March. Lesser adjutant stork showed a maximal mTT coincidently with fE2 with a surge in October. Thai sarus crane frequently displayed courtship in May-October, corresponding well with higher mTT rather than fE2 levels. Black-headed ibis showed courtship-copulation displays in January, simultaneously with mTT, but not with fE2 surge. Lesser adjutant stork often displayed courtship-copulation in October-January, seemingly corresponded with higher mTT and fE2 levels during October-December and October-November, respectively. Male and female lesser adjutant stork displayed egg-incubation and chick-rearing behaviors in November-January and December-June, respectively. We suggest that mTT and/or fE2 apparently played an important role in regulation of courtship-copulation displays but did not relate to both egg-incubation and chickrearing behaviors.
我们监测了5只泰国肉垂鹤（Grus antigone sharpii）雌雄个体、一群5只黑头白鹮（Threskiornis melanocephalus）雌雄个体以及5对圈养在邦帕水鸟繁殖研究中心的爪哇秃鹳（Leptoptilos javanicus）的年度粪便性激素水平和繁殖表现。在每天06:00 - 18:00观察繁殖行为，每月第二周的4天进行观察，并每月收集粪便，通过放射免疫测定法测定年度雄性总睾酮（mTT）和雌性雌二醇（fE2）水平。泰国肉垂鹤在7月雌性雌二醇激增后，8月雄性总睾酮达到峰值。黑头白鹮在3月雌性雌二醇激增前的1月雄性总睾酮达到峰值。爪哇秃鹳雄性总睾酮峰值与雌性雌二醇峰值同时出现，在10月激增。泰国肉垂鹤在5 - 10月频繁表现出求偶行为，这与较高的雄性总睾酮水平而非雌性雌二醇水平高度吻合。黑头白鹮在1月出现求偶 - 交配表现，与雄性总睾酮峰值同时出现，但与雌性雌二醇激增不同步。爪哇秃鹳经常在10月至次年1月表现出求偶 - 交配行为，似乎分别与10 - 12月和10 - 11月较高的雄性总睾酮和雌性雌二醇水平相对应。爪哇秃鹳雌雄个体分别在11月至次年1月和12月至次年6月表现出孵卵和育雏行为。我们认为，雄性总睾酮和/或雌性雌二醇显然在求偶 - 交配表现的调节中发挥了重要作用，但与孵卵和育雏行为均无关。
