Reproductive Parameters of Wild Trachypithecus leucocephalus:   Seasonality, Infant Mortality and Interbirth Interval

doi:10.1002/ajp.20688

CORC > 北京大学 > 生命科学学院

	Reproductive Parameters of Wild Trachypithecus leucocephalus: Seasonality, Infant Mortality and Interbirth Interval
	Jin, Tong ; Wang, De-Zhi ; Zhao, Qing ; Yin, Li-Jie ; Qin, Da-Gong ; Ran, Wen-Zhong ; Pan, Wen-Shi
刊名	美国灵长类学杂志
	2009
关键词	white-headed langur (Trachypithecus leucocephalus) timing of births infant survivorship age at first birth interbirth interval (IBI) LANGURS PRESBYTIS-ENTELLUS WHITE-HEADED LANGURS SOCIAL-ORGANIZATION RHINOPITHECUS-ROXELLANA BIRTH SEASONALITY MULTIMALE GROUPS LIFE-HISTORY LEAF MONKEYS KARST HILLS CHINA
DOI	10.1002/ajp.20688
英文摘要	Understanding the reproductive parameters of endangered primate species is vital for evaluating the status of populations and developing adequate conservation measures. This study provides the first detailed analysis of the reproductive parameters of wild white-headed langurs (Trachypithecus leucocephalus), based on demographic data collected over an 8-year period in the Nongguan Karst Hills in Chongzuo County, Guangxi, China. From 1998 to 2002, a total of 133 live births were recorded in the population based on systematic censuses. Births occurred throughout the year, but the temporal pattern was highly correlated with seasonal variation in temperature and rainfall, with the birth peak coinciding with the dry and cold months of November-March. The average birthrate was 0.47 +/- 0.13 births per female per year and mortality for infants younger than 20 months was 15.8%. From 1998 to 2006, 14 females gave birth to 41 infants in four focal groups. The average age at first birth for female langurs was 5-6 years (n = 5) and the interbirth interval (IBI) was 23.2 +/- 5.2 months (median = 24.5 months, n = 27). Infants are weaned at 19-21 months of age. The IBI for females with infant loss before weaning was significantly shorter than those for females whose infants survived. It appears that birth seasonality in the white-headed langurs is influenced by seasonal changes in food availability. The timing of conceptions was found to coincide with peak food availability. The reproductive parameters for white-headed langurs reported here are quite similar to those reported for other colobine species. One major difference is our observation of lower infant mortality in Trachypithecus. Am. J. Primatol. 71:558-566, 2009. (C) 2009 Wiley-Liss, Inc.; Zoology; SCI(E); PubMed; 12; ARTICLE; 7; 558-566; 71
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/197624]
专题	生命科学学院
推荐引用方式 GB/T 7714	Jin, Tong,Wang, De-Zhi,Zhao, Qing,et al. Reproductive Parameters of Wild Trachypithecus leucocephalus: Seasonality, Infant Mortality and Interbirth Interval[J]. 美国灵长类学杂志,2009.
APA	Jin, Tong.,Wang, De-Zhi.,Zhao, Qing.,Yin, Li-Jie.,Qin, Da-Gong.,...&Pan, Wen-Shi.(2009).Reproductive Parameters of Wild Trachypithecus leucocephalus: Seasonality, Infant Mortality and Interbirth Interval.美国灵长类学杂志.
MLA	Jin, Tong,et al."Reproductive Parameters of Wild Trachypithecus leucocephalus: Seasonality, Infant Mortality and Interbirth Interval".美国灵长类学杂志 (2009).