Adaptations of Female Lions to Infanticide by Incoming Males

@article{Packer1983AdaptationsOF,
  title={Adaptations of Female Lions to Infanticide by Incoming Males},
  author={Craig Packer and Anne E. Pusey},
  journal={The American Naturalist},
  year={1983},
  volume={121},
  pages={716 - 728}
}
Female lions with cubs show various direct responses to immigrating males, including defense of their cubs or avoidance of the new males. Despite these responses, male replacement in the females' pride results in considerable cub mortality. Those females that remain in the pride and mate with the new males show low fertility in the first few months after a takeover of their pride. At the same time, however, females show heightened sexual activity, being more active in initiating copulations and… 

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References

SHOWING 1-10 OF 23 REFERENCES

Male-male competition and infanticide among the langurs (Presbytis entellus) of Abu, Rajasthan.

  • S. Hrdy
  • Biology
    Folia primatologica; international journal of primatology
  • 1974
From a comparison with other mammals, infant-killing by males may be advantageous when there is intense competition for females; and when frequent take-overs potentially curtail the tenure of an incoming leader.

Male lions in large coalitions gain reproductive advantages

It is shown that, compared with singletons and pairs, male lions in groups of three or more can more reliably gain tenure of female prides, retain tenure for longer, mate with more different females, and produce more surviving offspring; thus each individual has higher fitness through cooperation.

Reproductive biology of lions (Panthera leo massaica Neumann) in Nairobi National Park

The hypothesis is put forward that lionesses usually refuse to raise single cubs or those that remain sole survivors at less than 3 months of age, suggesting that the level of nutrition may influence fertility.

A block to pregnancy in the mouse caused by proximity of strange males.

  • H. M. Bruce
  • Biology
    Journal of reproduction and fertility
  • 1960
It is suggested that the presence of other females may even help towards stabilizing a pregnancy, and the histology of the ovaries from females having blocked pregnancies showed a varying degree of pituitary-gonadotrophin stimulation.

Troop male membership changes and infant killing in langurs (Presbytis entellus).

  • J. Boggess
  • Biology
    Folia primatologica; international journal of primatology
  • 1979
The phenomena of infant killing and rapid male replacement are evaluated and data indicate that male social instability is species-typical for P. entellus but do not support the hypothesis that infant killing represents part of an evolved male reproductive strategy.

Infanticide and other reproductive strategies in the collared lemming, Dicrostonyx groenlandicus

Postparturition effects of unfamiliar males in the collared lemming (Dicrostonyx groenlandicus) are reported and the significance of these effects on reproductive strategies in this species is discussed.

Pregnancy Blocking in Rodents: Adaptive Advantages for Females

  • J. Labov
  • Biology
    The American Naturalist
  • 1981
Arguments are presented here that pregnancy blocking may have actually evolved as a female mechanism to minimize parental investment in offspring which are potentially susceptible to infanticide by the strange male.

Cooperation and competition within coalitions of male lions: kin selection or game theory?

Evidence is presented that breeding coalitions of male lions include non-relatives much more commonly than was generally supposed, that intra-coalition competition over females is widespread and that kinship is not the primary factor determining levels of competition.