Dispersal,inbreeding avoidance and reproductive success in white-footed mice |
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| Institution: | 1. Piraeus University of Applied Sciences, Department of Mechanical Engineering, 250 Thivon & Petrou Ralli Ave., 12244, Egaleo, Athens, Greece;2. Stassinopoulos-Uddeholm Steel Trading S.A., 20 Athinon Str., 18540 Piraeus, Greece;1. Multidisciplinary Neuroprotection Laboratories, Duke University, Durham, NC, United States;2. Department of Anesthesiology and Pain Medicine, Chonnam National University Medical School, Gwangju, South Korea;3. Department of Anesthesiology, Duke University, Durham, NC, United States;4. Department of Neurology, Duke University, Durham, NC, United States |
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| Abstract: | The dispersion pattern of 360 juvenile white-footed mice, Peromyscus leucopus, from 158 matings was monitored to determine whether dispersal was sufficient to prevent close inbreeding. Dispersal was male-biased with 20% of the daughters remaining in their natal home ranges. Dispersal of sons was not ‘forced’ by adult males, but may have been influenced by the presence of their mothers. One mother-son and five father-daughter pairs had overlapping home ranges during the breeding season, but the maximum number of matings among close relatives was three of 135 (2·2%). Dispersal of juvenile males was sufficient to keep close inbreeding at a minimum. Dispersal did not result from reproductive competition. Pregnant and post-lactating females frequently moved to new home ranges. The reproductive success of immigrants was the same as that of natal residents. |
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