A Bruce Effect in Wild Geladas

@article{Roberts2012ABE,
  title={A Bruce Effect in Wild Geladas},
  author={Eila K. Roberts and Amy Lu and Thore J. Bergman and Jacinta C. Beehner},
  journal={Science},
  year={2012},
  volume={335},
  pages={1222 - 1225}
}
Avoiding Infanticide In male dominated hierarchies, newly dominant males will sometimes kill resident infants. In lab studies in mice conducted in the 1950s, Hilda Bruce showed that females introduced to an unfamiliar male will terminate their pregnancies, a process subsequently referred to as a Bruce Effect. Roberts et al. (p. 1222, published online 23 February) followed multiple dominance transitions within wild gelada baboons and showed that live birthrate among females previously identified… 
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113 Citations
Highly Influential Citations
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Background Citations
44
Methods Citations
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113 Citations

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Citation Type

The Bruce effect revisited: is pregnancy termination in female rodents an adaptation to ensure breeding success after male turnover in low densities?
TLDR
It is shown that overwintered and primiparous females, the most abundant cohort during population lows in the increase phase of cyclic rodent populations, were more likely to delay births after turnover of the male than year-born and multiparous Female.
Male-Mediated Maturation in Wild Geladas
Infant survival in western lowland gorillas after voluntary dispersal by pregnant females
TLDR
These observations are the first to show that wild female western lowland gorillas can transfer voluntarily while pregnant without incurring infanticide by a new silverback, and highlight the behavioural plasticity shown by female gorillas in response to sexual coercion by males.
Contrasting effects of male immigration and rainfall on rank-related patterns of miscarriage in female olive baboons.
TLDR
Using 30 years of data on wild olive baboons in Gombe National Park, Tanzania, there is evidence that rapidly-rising immigrant males induced miscarriages in high-ranking females outside of drought conditions, but miscarriage rates were largely reversed during prolonged periods of low rainfall, suggesting that low- ranking females are particularly vulnerable to low food availability and social instability.
When will the Bruce effect evolve? The roles of infanticide, feticide and maternal death
Spontaneous abortion as a response to reproductive conflict in the banded mongoose
TLDR
The results suggest that abortion may be a means by which disadvantaged females conserve resources for future breeding attempts in more benign conditions, and highlight that female reproductive competition may be resolved long before the production of offspring.
Exposure to a novel male during late pregnancy influences subsequent growth of offspring during lactation
TLDR
It is demonstrated that female mice experiencing novel males during late pregnancy also alter their investment in progeny, but in a more subtle manner than previously observed, suggesting that cues of unfamiliar males, and possibly their associated threat of infanticide, can produce more wide‐ranging effects on maternal investment than previously recognized.
Multilevel societies facilitate infanticide avoidance through increased extrapair matings
Infant loss during and after male replacement in gibbons
TLDR
A review of takeover‐related infant loss in gibbons confirms that periods of male instability are risky for unweaned infants and that replacing males benefit from infant loss.
Data quality and the comparative method: the case of pregnancy failure in rodents
TLDR
This work compiled data on the Bruce effect, infanticide, and paternal care from one particularly rich source of information, rodents, but found the data set to be less rich than expected and found no clear relationship among the traits.
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References

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TLDR
Results suggest that sexually selected infanticide in geladas may, indeed, be a threat to females with dependent infants and raise the possibility that anecdotal reports of pregnancy termination, accelerated weaning, and deceptive sexual swellings may represent female counterstrategies to male infanticides in gelada.
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TLDR
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TLDR
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TLDR
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TLDR
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TLDR
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