Evidence map›Paper›PMID 32948598›Full record

ArticleScience advances2020

Postweaning maternal care increases male chimpanzee reproductive success.

Catherine Crockford, Liran Samuni, Linda Vigilant, Roman M Wittig

Abstract read
In one paragraph

Article in Science advances, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing 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

21 citing papers in PubMed.

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  10. Reproductive inequality among males in the genusPhilosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023
    Review
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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.

Catherine CrockfordDepartment of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany. crockford@eva.mpg.de.ORCID 0000-0001-6597-5106
Liran SamuniDepartment of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.ORCID 0000-0001-7957-6050
Linda VigilantDepartment of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.ORCID 0000-0003-4509-1260
Roman M WittigDepartment of Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.ORCID 0000-0001-6490-4031

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Humans are unusual among animals for continuing to provision and care for their offspring until adulthood. This "prolonged dependency" is considered key for the evolution of other notable human traits, such as large brains, complex societies, and extended postreproductive lifespans. Prolonged dependency must therefore have evolved under conditions in which reproductive success is gained with parental investment and diminished with early parental loss. We tested this idea using data from wild chimpanzees, which have similarly extended immature years as humans and prolonged mother-offspring associations. Males who lost their mothers after weaning but before maturity began reproducing later and had lower average reproductive success. Thus, persistent mother-immature son associations seem vital for enhancing male reproductive success, although mothers barely provision sons after weaning. We posit that these associations lead to social gains, crucial for successful reproduction in complex social societies, and offer insights into the evolution of prolonged dependency.

Indexed as

HominidaePan troglodytesAnimalsMaleReproductionWeaning

Identifiers

PMID32948598
PMCPMC7500924

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.