Reproductive ecology of Emperor Geese: Survival of adult females

The Condor
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Abstract

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.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Reproductive ecology of Emperor Geese: Survival of adult females
Series title The Condor
DOI 10.2307/1369212
Volume 94
Issue 2
Year Published 1992
Language English
Publisher Cooper Ornithological Society
Contributing office(s) Alaska Science Center
Description 9 p.
First page 398
Last page 406
Country United States
State Alaska
Other Geospatial Kokechik Bay. Yukon-Kuskokwim Delta
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