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Acta Theriologica

, Volume 49, Issue 2, pp 269–273 | Cite as

Nest mortality in a population of small mammals

  • John S. Miliar
  • Monika A. Havelka
  • Sapna Sharma
Fragmenta Theriologica

Abstract

Female white-footed micePeromyscus leucopus (Rafinesque, 1818) and their dependent offspring were monitored in nest boxes to determine the extent and causes of nest mortality. The mortality of dependent young was high (561 of 838; 66%) and variable among years. Most mortality involved the loss of entire litters (112 of 183 litters; 61%), with half of these losses attributed to the death of lactating females before the young were weaned (59 of 112 litters; 53%). Most mortality was from unknown causes, although infanticide, energetic constraints and predation were identified in a small number of cases. Predation is likely the major source of mortality in this population.

Key words

Peromyscus leucopus nestling survival infanticide energetic constraint predation population 

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Copyright information

© Mammal Research Institute, Bialowieza, Poland 2004

Authors and Affiliations

  • John S. Miliar
    • 1
  • Monika A. Havelka
    • 2
  • Sapna Sharma
    • 3
  1. 1.Department of BiologyUniversity of Western OntarioLondonCanada
  2. 2.Department of BiologyUniversity of Toronto at MississaugaMississaugaCanada
  3. 3.Department of ZoologyUniversity of TorontoTorontoCanada

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