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Food limitation and low-density populations of sympatric hamster species in North China Naturalis
Xiong, W.; Liang, H.; Yu, X.; Cong, L.; Zhang, Z..
Although food has been proposed as a possible factor on population regulation of small mammals, evidence of food restriction in field conditions is still lacking. Food restriction is generally thought to occur in high-density years of oscillating populations of small mammals. By using two body condition indices (muscle protein concentration and cleaned carcass index), we investigated variations of body condition of the greater long-tailed hamster (Tscherskia triton) and the striped hamster (Cricetulus barabensis) in the Raoyang County of the North China Plain during a population decline- and low-phase from 1998 to 2003. Our laboratory experiments showed that food restriction reduced muscle protein concentration and cleaned carcass index of greater...
Tipo: Article / Letter to the editor Palavras-chave: Body condition; Cricetulus barabensis; Density-dependent food restriction; Population dynamics; Tscherskia triton; 42.84.
Ano: 2009 URL: http://www.repository.naturalis.nl/record/311810
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