Female Resistance to Invading Males Increases Infanticide in Langurs
2011

Infanticide in Snub-Nosed Langurs

Sample size: 17 publication Evidence: moderate

Author Information

Author(s): Ren Baoping, Li Dayong, He Xinmin, Qiu Junhua, Li Ming

Primary Institution: Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China

Hypothesis

How does female resistance to invading males affect infanticide rates in langurs?

Conclusion

The study found that female resistance to new males is a key factor influencing infanticide rates in snub-nosed langurs.

Supporting Evidence

  • Infanticide was observed to be more accidental than goal-directed.
  • Multiparous mothers who accepted the invading male shortly after takeovers avoided infanticide in most cases.
  • Voluntary abortion or mating with the invading male was used by females to limit infanticide.

Takeaway

When new male langurs come into a group, mothers try to protect their babies, and if they resist the new males, it can lead to more baby deaths.

Methodology

The study used long-term reproductive records and direct observations of two snub-nosed langur species in captivity and the wild.

Potential Biases

Potential observational bias due to the nature of the study settings.

Limitations

Limited data due to the rarity of infanticide events in snub-nosed langurs.

Participant Demographics

The study involved two species of snub-nosed langurs, with observations made in both captive and wild settings.

Statistical Information

P-Value

p<0.01

Statistical Significance

p<0.01

Digital Object Identifier (DOI)

10.1371/journal.pone.0018971

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