高黎贡山白尾梢虹雉春季食谱及食物营养成分分析

白尾梢虹雉是东喜马拉雅地区特有珍稀雉类,本文运用粪样显微分析方法研究了该种雉类春季的食谱,并对栖息地中部分常见植物进行了营养成分分析,以探讨营养成分对白尾梢虹雉取食偏好的影响。粪检结果表明白尾梢虹雉春季食谱中至少有23种植物种类,从3月到5月食谱结构逐渐变化,体现在植物的叶逐渐取代根成为主要取食部位,这与高山草甸植被的季节相关,因为高黎贡山地区5月初进入雨季后草本植物才大量萌发。植物营养成分中的粗脂肪和钙元素与白尾梢虹雉的取食偏好显著正相关,推测分别与食物的适口性和繁殖期的钙消耗相关。

Spring Diets and Food Nutrients of Sclater's Monal at Mt.Gaoligong, China

By means of microscoping,we analyzed fecal samples(n=93) of Sclater’s monal Lophophorus sclateri collected from Mt.Gaoligong in spring of 2003,to study the diet component of this rare and threatened pheasant species.Totally,23 species of plants have been found consumed by Sclater’s monal and 5 categories of fragments in the feces left unknown comparing to our collections.Plant roots,leaves and flowers were found in their diet and each account to 46.90%,36.63% and 1.45%,respectively,while the other 6.54% are from one species of Bryophytes.From March to May,monthly roots decreasement were replaced by leafs increasement,which we considered to be the consequence of the grassland growth that closely related with the rainy season begins in May.Plants with higher oil and calcium porpotion were preferred aliment according to our correlation analysis,which implied these two nutrients were significant to Sclater’s monal in breeding season.