thumbnail

Population limitation and the wolves of Isle Royale

Journal of Mammalogy

By:
, , , ,

Links

Abstract

Population regulation for gray wolves in Isle Royale National Park, Michigan, was ex- amined in 1987-1995 when wolves were in chronic decline following a crash of the pop- ulation in 1981-1982. Canine parvovirus (CPV-2) was probably influential during the crash, but it disappeared by the lae 1980s. High mortality abruptly ceased after 1988, but low recruitment in the absence of disease and obvious shortage of food prevented recovery of the wolf population. In 1983-1995, with a comparable number of moose '10 years old as potential prey, wolves were only half as numerous as in 1959-1980. A simulation of annual fluctuations in effective population size (Ne) for wolves on Isle Royale suggests that their genetic heterozygosity has declined ca. 13% with each generation and ca. 80% in the 50- year history of this population. Inbreeding depression and stochastic demographic variation both remain possible explanations for recent low recruitment.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Population limitation and the wolves of Isle Royale
Series title:
Journal of Mammalogy
Volume
79
Issue:
3
Year Published:
1998
Language:
English
Contributing office(s):
National Wildlife Health Center
Description:
p. 828-841
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Mammalogy
First page:
828
Last page:
841
Number of Pages:
14