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… 
The Evolution of Sex-Biased Dispersal in Lions
Most female lions remain in their natal pride for their entire lives, but about a third emigrate before they reach four yrs of age. Most emigrating females leave either when they are evicted by an
Battle of the sexes: a multi-male mating strategy helps lionesses win the gender war of fitness
TLDR
The intergender spacing patterns and resultant sexual strategies of lions differ in Asia and Africa probably because of contrasting resource availability, highlighting behavioral plasticity within species inhabiting diverse eco-regions.
Infanticide by male house sparrows: gaining time or manipulating females?
  • J. Veiga
  • Biology, Medicine
    Proceedings of the Royal Society of London. Series B: Biological Sciences
  • 2003
TLDR
It is demonstrated that, in the house sparrow, females mating with infanticidal males re-laid earlier, initiated more breeding attempts and fledged more offspring than females mated with non-infanticidal male.
Contrasting levels of social distancing between the sexes in lions
TLDR
Comparison of long-term lion data from Serengeti and Ngorongoro in Tanzania, and Gir in India, reveals that male-female associations are contingent upon male and female group size, prey-size and availability, and the number of prides that each male coalition currently resides.
Infanticide by Male Lions Hypothesis: A Fallacy Influencing Research into Human Behavior
Recently, familial abuse and killing of children have been correlated with infanticidal behavior by nonhuman male animals which is postulated to be genetic. However, infanticide by males as an
Maternal grouping as a defense against infanticide by males: evidence from field playback experiments on African lions
Female lions roar in order to stay in contact with their pridemates and to defend their territory against other prides. In doing so, however, they risk attracting die attention of potentially
Infanticide as sexual conflict: coevolution of male strategies and female counterstrategies.
  • R. Palombit
  • Biology, Medicine
    Cold Spring Harbor perspectives in biology
  • 2015
TLDR
Two bodies of evidence addressing coevolved strategies of males and females are reviewed, providing compelling evidence of sexually antagonistic coevolution surrounding the phenomenon of infanticide.
Sexual conflict in chacma baboons, Papio hamadryas ursinus: absent males select for proactive females
TLDR
It was predicted that, to secure additional protection, females should attempt to augment the paternity estimates of as many males as possible and, therefore, should seek to influence overall patterns of mating and it was found that females actively solicited copulations from all guarding males and did so irrespective of their rank or the underlying probability of ovulation.
Reproductive skew among males in a female-dominated mammalian society
TLDR
The data support a ‘‘limited control’’ model of reproductive skew in this species, in which female choice may play a more important role in limiting control by dominant males than do power struggles among males.
Do female rodents use promiscuity to prevent male infanticide
It has been hypothesized that females could use promiscuity to prevent male infanticide: a female will mate with several males as a way to confuse paternity of her offspring, so the males will
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 24 REFERENCES
Male-male competition and infanticide among the langurs (Presbytis entellus) of Abu, Rajasthan.
  • S. Hrdy
  • Biology, Medicine
    Folia primatologica; international journal of primatology
  • 1974
TLDR
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 takeovers and female reproductive parameters: A simulation of oestrous synchrony in lions (Panthera leo)
TLDR
Simulation of the reproductive histories of 100 female lions for the first 2 years after a male takeover of a pride of lions synchronizes the reproductive states of the females and produced levels of oestrous synchrony similar to those observed in prides of wild lions.
Male lions in large coalitions gain reproductive advantages
TLDR
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
TLDR
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, Medicine
    Journal of reproduction and fertility
  • 1960
TLDR
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.
Infanticide among animals: A review, classification, and examination of the implications for the reproductive strategies of females
TLDR
It is hypothesized that the threat posed by infanticide is one of several pressures selecting for a shift among higher primates away from strictly cyclical estrous receptivity towards socially determined or situation-dependent receptivity.
Troop male membership changes and infant killing in langurs (Presbytis entellus).
  • J. Boggess
  • Biology, Medicine
    Folia primatologica; international journal of primatology
  • 1979
TLDR
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
TLDR
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
TLDR
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?
TLDR
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.
...
1
2
3
...