圈养小熊猫繁殖行为变化及繁殖行为对策

In order to investigate the change of reproductive behaviors and understand reproductive strategies of both male and female red pandas, one-year behavioral observation was conducted through the focal sampling method in the Chengdu Research Base of Giant Panda Breeding from December 1999 to November 2000. Our results indicated that reproductive behaviors showed significant differences between the estrous and non-estrous seasons. Frequencies of the rubbing anogenital, sniffing and licking marking were much higher in estrus than in non-estrus. Bleating only appeared in the estrus and can be regarded as an estrous indicator.The result also demonstrated that both male and females applied different reproductive behavioral strategies. Frequencies of activity, rubbing anogenital, licking and sniffing marking, and bleat were much higher in the male than in the female. However, those of resting and investigating were much lower in the male than in the female. This indicated that the male was more active than the female during the estrus and might imply that the male acts mainly as an estrous message sender, and the female as a message receiver in the estrous season.     

粪便类固醇激素研究简史及其在野生动物研究中的应用

系统回顾了粪便类固醇激素研究的历史,全面总结了国内外学者对动物粪便类固醇激素研究的现状,认为利用动物粪便研究类固醇激素具有完全无伤害性、材料收集容易等其他方法无可比拟的优点,并且有助于评估动物青春期的健康状况、判断动物的排卵方式、早孕诊断、产期预测等,因而是目前研究野生珍稀动物类固醇激素的一种较为理想的方法。     

雄性小熊猫粪便中睾酮水平的变化与繁殖周期的关系

1999年 12月至 2 0 0 0年 9月 ,使用放射免疫分析法 ,测定了成都动物园和成都大熊猫繁育研究基地的 4只雄性小熊猫粪样中睾酮水平变化情况 ,同时对其行为进行了观察。研究结果表明 ,雄性粪样中睾酮水平在繁殖期(12月～ 3月 )显著高于非繁殖期 (4月～ 9月 ) (P <0 0 1) ,且睾酮水平变化与繁殖行为密切相关。在非繁殖期 ,雄性小熊猫的睾酮水平处于基础的较低水平时 ,其繁殖行为如蹭阴、舔阴、舔标记物和咩叫等几乎没有发生或很少发生 ;而在繁殖期 ,雄性小熊猫的睾酮水平明显升高 ,这些繁殖行为频繁发生。以上结果说明 ,睾酮是调节雄性小熊猫繁殖行为季节性变化的生理因子     

圈养小熊猫育幼行为的初步观察

Nursing behaviors of the captive md pandas were quantitatively studied by focal sampling methods in Chengdu Research Base of Giant Panda Breeding from Jldy to August, 2000. The results indicated that frequencies of activity and rest were low in the first three days after birth, and became higher as time went by. The frequency of licking cub was higher in the first day after birth and deserting cub was only observed in the seventh day. Frequencies of some behaviors, such as rest, licking cub, cherishing cub,sniffing cub, returning to shed and deserting cub, differed sioaificantly in different phases of the first month after birth. Frequencies of licking cub, cherishing cub, sniffing cub and returning to shed were significantly higher in the pre-nursing period than in the midnursing and post-nursing periods. However, frequencies of rest and deserting cub were sioaificantly higher in the post-nursing period than in the per-nursing and mid-nursing periods. The degree of maternal behaviors can be inferred from degree that the mother exposes her babies to the envim~unent and the time that the mother leaves her shed.