Journal
JOURNAL OF EVOLUTIONARY BIOLOGY
Volume 23, Issue 6, Pages 1148-1158Publisher
WILEY
DOI: 10.1111/j.1420-9101.2010.01979.x
Keywords
age structure; demographic variance; effective population size; environmental variance; genetic drift; reproductive value; stochastic population dynamics
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Funding
- Research Council of Norway (STORFORSK)
- Royal Society of London
- Centre for Conservation Biology at the Norwegian University of Science and Technology
- Academy of Finland
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The effective population size is a central concept for understanding evolutionary processes in a finite population. We employ Fisher's reproductive value to estimate the ratio of effective to actual population size for an age-structured population with two sexes using random samples of individual vital rates. The population may be subject to environmental stochasticity affecting the vital rates. When the mean sex ratio at birth is known, improved efficiency is obtained by utilizing the records of total number of offspring rather than considering separately female and male offspring. We also show how to incorporate uncertain paternity.
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