Fishers (Martes pennanti) have recolonized eastern Ontario, Canada, but little is known about the survival of this harvested population. We estimated fisher survival and cause-specific mortality in Leeds and Grenville County, Ontario, from 2003–2005. The overall 2-year survival rate (95% CI) was 0.35 (0.21–0.56, n = 59). We attributed observed mortality rates mainly to natural causes (28.6%) and nuisance trapping (21.4%). Given reported recruitment rates, our estimated fisher mortality has likely led to population declines in the study area, especially during 2003. Thus, we do not recommend an increase in fisher harvest quotas in the study area at this time.
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1 June 2007
Fisher Survival in Eastern Ontario
ERIN L. KOEN,
JEFF BOWMAN,
C. SCOTT FINDLAY
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Journal of Wildlife Management
Vol. 71 • No. 4
June 2007
Vol. 71 • No. 4
June 2007
cause-specific mortality
fisher
Martes pennanti
Ontario
radiotelemetry
survival
trapping