Proximate and Ultimate Controls on Life-history Variation: the Evolution of Litter Size in White-footed Mice (peromyscus Leucopus).

@article{Morris1986ProximateAU,
  title={Proximate and Ultimate Controls on Life-history Variation: the Evolution of Litter Size in White-footed Mice (peromyscus Leucopus).},
  author={Douglas W. Morris},
  journal={Evolution; international journal of organic evolution},
  year={1986},
  volume={40 1},
  pages={169-181}
}
Recruitment of litter-mates of nest-box-inhabiting white-footed mice was monitored to study the evolution of litter size. The frequency distribution of litter sizes was nonsymmetrical, and the most frequent litter size was less than the optimum. This was not the result of differential parental survival, which was independent of litter size produced. Recruitment remained constant or increased slightly to a peak in litters of five young, and then dropped precipitously for larger litters. The… CONTINUE READING
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