摘要
2005年10月—2006年7月,对弄岗国家级自然保护区的一群黑叶猴Trachypithecus francoisi进行观察,采用瞬时扫描取样法收集有关觅食行为的数据,通过与采食植物水分含量的比较,探讨影响黑叶猴食物选择的因素。结果表明:黑叶猴采食植物不同部位的平均水分含量存在明显差异:嫩叶的水分含量最高,为71.52%;其次是成熟叶,为66.25%;果实的水分含量最低,为63.42%。虽然每个月采食植物的平均水分含量存在显著差异(61.59%～72.59%),但从整体来看,旱季和雨季所采食植物的平均水分含量未表现出显著差异。各月份黑叶猴对不同植物树叶的采食时间与该种类植物树叶的水分含量之间的相关性检验数据显示,11月和12月份黑叶猴对某一物种树叶的觅食时间与含水量之间存在显著的正相关。这一结果表明,食物的水分含量可能是影响生活在喀斯特石山环境的黑叶猴食物选择的因素之一,尤其在水分缺乏的旱季。
Data on the diet were collected from one group of Francois＇ langurs（Trachypithecus francoisi） between October 2005 and July 2006 at Nonggang Nature Resereve, Guangxi province, using instantaneous scan sampling. To explore the influence of water content in food on langur＇s food choice,water contents of the food species were measured, and the relationship between water contents of the food species and their consumption were analyzed. The results indicated that there was significant variation in the water contents of different plant parts eaten by langurs. Immature leaves had the largest value of water content,which accounted for 71.52% ,followed by mature leaves for 66. 25% ,and fruits had the lowest value 63. 42%. The monthly mean water content in plant food showed significan; variation,ranging from 61. 59; to 72. 59%. However,there was no significant difference in the mean water content in plant food according to season. The relationships between the monthly feeding time for leaves of different plant species and their corresponding water content were tested ,and significant correlations in November and December were found. This indicated that water content of the food may be one of the factors influencing the food choice of the Francois＇ langur in Karst habitat,especially in the dry season.
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2011年第4期117-121,共5页
Journal of Guangxi Normal University:Natural Science Edition
基金
国家自然科学基金资助项目(30560023
30860050)
广西自然科学基金资助项目(桂科自0991095)
国家林业局叶猴监测与保护项目
广西壮族自治区研究生教育创新项目(2010106020710M52)
关键词
黑叶猴
食物水分
食物选择
喀斯特生境
Francois＇ langur
water content in food
food choice
karst habitat
