Clarifying reproductive physiology and establishing reproductivestatus survey method for the conservation of endangered carnivores

为保护熊、猫科动物等濒危食肉动物，对繁殖生理和繁殖状况调查分析方法进行了研究。本研究建立了猎豹、北极熊等动物性腺活动的无创性粪便内分泌监测方法，阐明了东北虎、太阳熊等动物的排卵模式等生殖生理，研究了动物园圈养东北虎粪便中性类固醇激素的浓度分布。这些分布格局可能有助于揭示散养虎的性别和繁殖状况。

Reproductive physiology and analysis method for reproductive status survey were studied for the conservation of endangered carnivores such as bear and felid species. As a resultnon-invasiveendocrine monitoring method using feces were established for assessing the gonadal activity in cheetah, polar bear and others.Using the monitoring method reproductive physiology such as ovulation pattern was clarified in Siberian tiger, sun bear and others.Concentration distribution of fecal sex steroid hormones was studied in Siberian tigers in zoo captivity. The distribution patterns may be able to reveal the sexes and reproductive status in free-ranging tigers.