Evidence map›Paper›PMID 30323256›Full record

ArticleScientific reports2018

Caring for infants is associated with increased reproductive success for male mountain gorillas.

Stacy Rosenbaum, Linda Vigilant, Christopher W Kuzawa, Tara S Stoinski

Abstract read
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed.

  1. Meat Acquisition Skill and Male Reproductive Success in Guinea Baboons.American journal of biological anthropology · 2026
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  10. Infant adoptions in wild bonnet macaques (Macaca radiata).Primates; journal of primatology · 2022
    Article
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  14. The evolution of paternal care: a role for microbes?Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2020
    Article
  15. Variation in Adult Male-Juvenile Affiliative Behavior in Japanese Macaques (Macaca fuscata).Folia primatologica; international journal of primatology · 2020
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Stacy RosenbaumDepartment of Anthropology, Northwestern University, Evanston, IL, USA. stacy.rosenbaum@northwestern.edu.ORCID http://orcid.org/0000-0002-7576-5302
Linda VigilantMax Planck Institute for Evolutionary Anthropology, Leipzig, Germany.ORCID http://orcid.org/0000-0003-4509-1260
Christopher W KuzawaDepartment of Anthropology, Northwestern University, Evanston, IL, USA.
Tara S StoinskiThe Dian Fossey Gorilla Fund, Atlanta, GA, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Socioecological theory predicts that male parenting among mammals should be rare due to the large payoffs of prioritizing mating effort over parenting. Although these predictions are generally met, in some promiscuous primate species males overcome this by identifying their offspring, and providing benefits such as protection and resource access. Mountain gorillas, which often organize into multi-male groups, are an intriguing exception. Males frequently affiliate with infants despite not discriminating their own from other males' offspring, raising questions about the function of this behavior. Here we demonstrate that, independent of multiple controls for rank, age, and siring opportunities, male gorillas who affiliated more with all infants, not only their own, sired more offspring than males who affiliated less with young. Predictive margins indicate males in the top affiliation tertile can expect to sire approximately five times more infants than males in the bottom tertile, across the course of their reproductive careers. These findings establish a link between males' fitness and their associations with infants in the absence of kin discrimination or high paternity certainty, and suggest a strategy by which selection could generate more involved male parenting among non-monogamous species.

Indexed as

PaternityAnimalsEmpathyFemaleGorilla gorillaMaleReproductionSexual Behavior, AnimalSocial Dominance

Identifiers

PMID30323256
PMCPMC6189178

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.