Seasonality of intraspecific mortality by gray wolves

Journal of Mammalogy
By:  and 



Of 41 adult wolf-killed gray wolves (Canis lupus) and 10 probably or possibly killed by wolves from 1968 through 2014 in the Superior National Forest (SNF) in northeastern Minnesota, most were killed in months leading up to and immediately following the breeding season, which was primarily February. This finding is similar to a published sample from Denali National Park, and the seasonality of intraspecific mortality generally parallels the known seasonality of testosterone levels, scent-marking, howling frequency, and general interpack aggression. Males and females were killed in the same proportion as in the population of radiocollared wolves. The annual rate of wolf-killed wolves was not related to the annual wolf density. Our findings tend to support intraspecific mortality of adult wolves as a means to reduce breeding competition and to maintain territories.

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Publication type Article
Publication Subtype Journal Article
Title Seasonality of intraspecific mortality by gray wolves
Series title Journal of Mammalogy
DOI 10.1093/jmammal/gyx113
Volume 98
Issue 6
Year Published 2017
Language English
Publisher Oxford Academic
Contributing office(s) Northern Prairie Wildlife Research Center
Description 9 p.
First page 1538
Last page 1546
Country United States
State Minnesota
Other Geospatial Superior National Forest
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