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Related Experiment Video

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Batch Immunostaining for Large-Scale Protein Detection in the Whole Monkey Brain

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Published on: July 27, 2009

Routine allomaternal nursing in a free-ranging Old World monkey.

Zuofu Xiang^1,2,3, Penglai Fan³, Haochun Chen¹

¹College of Life Science and Technology, Central South University of Forestry and Technology, Changsha, Hunan 410004, China.

Science Advances

|February 26, 2019

Summary

Allomaternal nursing, where infants are nursed by females other than their mothers, is common in golden snub-nosed monkeys. This behavior benefits infant survival and doesn't harm the nursing female's future reproduction.

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Area of Science:

Primate behavior
Mammalian reproductive strategies

Background:

Allomaternal nursing is documented in various species but rare in Old World monkeys and apes.
Golden snub-nosed monkeys (Rhinopithecus roxellana) are a species of Colobinae.

Purpose of the Study:

To conduct a detailed field study on allomaternal nursing in golden snub-nosed monkeys.
To investigate the prevalence, patterns, and consequences of allomaternal nursing in this species.

Main Methods:

Field observation of golden snub-nosed monkeys.
Data collection on nursing events, infant age, and relationships between females.

Main Results:

Over 87% of infants were nursed by non-maternal females.
Allomaternal nursing primarily occurred within the first three months of an infant's life.
Nursing predominantly happened between related females in a reciprocal pattern.

Conclusions:

Allomaternal nursing significantly enhances infant survivorship in golden snub-nosed monkeys.
This behavior does not negatively impact the future reproductive success of the allonursers.
Findings expand the known taxonomic distribution of allomaternal nursing and offer insights into its evolutionary drivers in primates.