Effective population size in supportive breeding

Article Abstract:

Effective population size in supportive breeding has been studied. Changes in the variance effective size show up a generation earlier than for the inbreeding effective size so likely to assess the genetic consequences of a conservation management plan in terms of the effective size, different generation should be considered for the two types of effective size. To derive an expression for the inbreeding effective size in nonrandom mating populations, as exists in supportive breeding, the rate of inbreeding should be computed with the average coancestry among individuals instead of the actual inbreeding coefficient. An alternate formula for the inbreeding effective number is proposed.

Japan, Research, Biological diversity conservation, Biodiversity conservation, Inbreeding

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Statistical power of presence-absence data to detect population declines

Article Abstract:

Statistical analysis of animal population decline is presented. The presence-absence design of population assessment is analyzed within the context of statistical power, or the probability of predicting no population decline, when population decline has indeed occurred.

United States, Statistical Data Included, Animal populations, Population biology

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