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Zoological Research
Kunming Institute of Zoology, Chinese Academy of Sciences
ISSN: 2095-8137
Vol. 25, No. 2, 2004, pp. 162-165
Bioline Code: zr04029
Full paper language: Chinese
Document type: Research Article
Document available free of charge

Zoological Research, Vol. 25, No. 2, 2004, pp. 162-165

 en Diet Composition of Upland Buzzard: Analysis on Stomach Content and Food Pellet
LI Lai-xing YI Xian-feng LI Ming-cai ZHANG Xiao-ai

Abstract

Contents of 14 stomachs and 118 food pellets were analyzed to trace dietary information of upland buzzards ( Buteo hemilasius check for this species in other resources ) living at alpine meadow ecosystem in Maduo County,Qinghai Province.The prey items can be classified into three types:1)plateau pika ( Ochotona curzoniae check for this species in other resources ),2) Qinghai vole ( Lasiopodomys fuscus check for this species in other resources ),and 3) small birds.The results indicated that the average occurrence frequencies (pi) and biomass ratios (bi) of plateau pika,Qinghai vole and small birds in diets of upland buzzards were 0.28,0.68 and 0.04 as well as 0.59,0.40,and 0.02 respectively.pi and bi of the prey items in food pellets were 0.70,0.27 and 0.02 as well as 0.89,0.10 and 0.01 respectively.Analyses on stomach contents and food pellets generated significant different pi and bi (X2 test),however,both revealed key roles of plateau pika and Qinghai vole in diets of upland buzzards.

Keywords
Upland buzzard; Diet analysis; Stomach content; Food pellet; Small mammal

 
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