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Reproductive ecology of Emperor Geese: Survival of adult females

January 1, 1992

Life history theory predicts a decrease in survival with increased reproductive effort of individuals. This relationship, however, is highly variable among and within species. I studied the nesting success and survival of adult female Emperor Geese during 1982-1986 and found no direct evidence that differential reproductive effort as measured by the number of eggs laid or hatching success had a significant negative effect on survival to the next breeding season. Incubated clutch size, hatched clutch size, number of parasitic eggs, nest initiation date, hatch date, and mass at hatch were not related to subsequent survival. Of the factors I examined, only an attempt to nest the previous season was related to survival of a female. I suggest that the higher probability of survival among non-nesting adult female Emperor Geese was primarily related to hunting pressure on the nesting area between spring and fall migration. The probability of survival was increased for females with larger clutches, suggesting a positive relationship between brood size and survival.

Publication Year 1992
Title Reproductive ecology of Emperor Geese: Survival of adult females
DOI 10.2307/1369212
Authors Margaret R. Petersen
Publication Type Article
Publication Subtype Journal Article
Series Title The Condor
Index ID 70182165
Record Source USGS Publications Warehouse
USGS Organization Alaska Science Center