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Black-Footed Ferret Prey Requirements: An Energy Balance Estimate
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Black-Footed Ferret Prey Requirements: An Energy Balance Estimate

著者: Mark R Stromberg; R Lee Rayburn; Tim W Clark
版本/格式: 文章 文章 : 英语
刊登在:The Journal of Wildlife Management, Jan., 1983, vol. 47, no. 1, p. 67-73
数据库:JSTOR
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文件类型: 文章
所有的著者/提供者: Mark R Stromberg; R Lee Rayburn; Tim W Clark
ISSN:0022-541X
OCLC号码: 479992737
语言注释: English
注意: Fig. 1. Energy flow in black-footed ferret model from kill to satisfaction of energy requirements (modified from Grodzinski and Wunder 1975).
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摘要:

A model based on calculations of metabolizable energy requirements estimated the annual prey requirements for 1 reproductive female black-footed ferret (Mustela nigripes) and her young. Both white-tailed and black-tailed prairie dogs (Cynomys leucurus and C. ludovicianus) were considered as prey. Gestation, lactation, and ferret pup growth were modeled. A general regression of mustelid prey biomass requirements helped verify metabolizable energy calculations. Populations of between 474 and 1,421 black-tailed prairie dogs and between 412 and 1,236 white-tailed prairie dogs are predicted as necessary to sustain the annual predation by the female and young ferrets. Minimum ferret densities expected to occur and sizes of ferret preserve areas were calculated. These results can be used by administrators and managers charged with black-footed ferret surveys and conservationists planning preserves for this endangered species.

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