摘要
This study presents the results of a demographic analysis of 20 years of birth and death records of red gorals kept at the Shanghai Zoo. The age of the first successful breeding, sex ratio at birth, seasonality of reproduction and mortality rate are presented. The females or males of red goral born in captivity can give their first birth at the age of 2 or 3 separately. The births mainly occurred from May to July and peaked in June. Ratio of females to males at birth was 2.36∶1. The mortality rate for infants and adults were 23.1% and 11.8%, respectively while there was no sub-adult death recorded during the 20 years period. There was a definite relation between mortality rate and seasons and mainly in July.
This study presents the results of a demographic analysis of 20 years of birth and death records of red gorals kept at the Shanghai Zoo. The age of the first successful breeding, sex ratio at birth, seasonality of reproduction and mortality rate are presented. The females or males of red goral born in captivity can give their first birth at the age of 2 or 3 separately. The births mainly occurred from May to July and peaked in June. Ratio of females to males at birth was 2.36∶1. The mortality rate for infants and adults were 23.1% and 11.8%, respectively while there was no sub-adult death recorded during the 20 years period. There was a definite relation between mortality rate and seasons and mainly in July.
出处
《兽类学报》
CAS
CSCD
北大核心
2004年第1期82-83,共2页
Acta Theriologica Sinica
基金
上海动物园资助项目
关键词
红斑羚
笼养
生态生物学
偶蹄目
牛科
Red Goral(Nemorhaedus cranbrooki)
Captive breeding
Eco-biology
