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Effective Population Size, Generation Interval, and Potential Loss of Genetic Variability in Game Species under Different Hunting Regimes

Nils Ryman, Ramone Baccus, Christina Reuterwall and Michael H. Smith
Oikos
Vol. 36, No. 3 (Mar., 1981), pp. 257-266
Published by: Wiley on behalf of Nordic Society Oikos
DOI: 10.2307/3544622
Stable URL: http://www.jstor.org/stable/3544622
Page Count: 10
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Effective Population Size, Generation Interval, and Potential Loss of Genetic Variability in Game Species under Different Hunting Regimes
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Abstract

Effective population size ( N e) and generation interval as affected by various hunting policies for moose and white-tailed deer was estimated using stochastic computer simulations. Both parameters, and particularly the generation interval, can vary drastically for different hunting regimes. For the various regimes simulated for the moose, the generation intervals ranged from 4.2 to 9.9 yr and the ratios of effective population size to actual population size from approximately 0.2 to 0.4. It is concluded that the amount of genic variation can be severely reduced even within short periods of time as a result of improper management policies. /// Определяли эффективную величину популяции (Ne) и интервал между генерациями у американских лосей и виргинских оленей как следствие воздействия различных мер охотничьей инспекции, с помощью стохастиченкого компьютерного моделирования. Оба параметра и особенно интервал между генерациями могут существенно различаться при разных режимах охоты. Для разных режимов, моделированных для поса, интервалы между генерациями ф составляют от 4,2 до 9,9 лет, а отношение эффективной величины популяции к ее фактической величине составляет примерно 0,2 -0,4. Сделано заключение, что число генетических вариаций может сильно сократиться даже в течение короткого периода времени в результате направльных действий охотничьей инспекции.

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