Evidence map›Paper›PMID 21482775›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2011

Comparative analysis of constraints and caste differences in brain investment among social paper wasps.

Sean O'Donnell, Marie Clifford, Yamile Molina

Abstract readComparative Study
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

13 citing papers in PubMed.

  1. Linking individual fitness to the evolution of cognition.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Review
  2. Article
  3. Brain evolution in social insects: advocating for the comparative approach.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2019
    Review
  4. Brain Organization ofFrontiers in neuroanatomy · 2019
    Article
  5. Article
  6. Article
  7. Why are there so many explanations for primate brain evolution?Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2017
    Review
  8. Body size limits dim-light foraging activity in stingless bees (Apidae: Meliponini).Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2016
    Article
  9. Article
  10. Article
  11. Toward a neurology of loneliness.Psychological bulletin · 2014
    Review
  12. Article
  13. Article
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

3 authors.

Sean O'DonnellDepartments of Psychology and Biology, University of Washington, Seattle, WA 98195, USA. sodonnel@uw.edu
Marie Clifford
Yamile Molina

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We compared species mean data on the size of functionally distinct brain regions to test the relative rates at which investment in higher-order cognitive processing (mushroom body calyces) versus peripheral sensory processing (optic and antennal lobes) increased with increasing brain size. Subjects were eusocial paper wasps from queen and worker castes of 10 species from different genera. Relative investment in central processing tissue increased with brain size at a higher rate than peripheral structure investment, demonstrating that tissue devoted to higher-order cognitive processing is more constrained by brain size. This pattern held for raw data and for phylogenetically independent contrasts. These findings suggest that there is a minimum necessary investment in peripheral sensory processing brain tissue, with little to gain from additional investment. In contrast, increased brain size provides opportunities to invest in additional higher-order cognitive processing tissue. Reproductive castes differed within species in brain tissue investment, with higher central-to-peripheral brain tissue ratios in queens than in workers. Coupled with previous findings that paper wasp queen, but not worker, brain architecture corresponds to ecological and social variation, queen brain evolution appears to be most strongly shaped by cognitive demands, such as social interactions. These evolutionary patterns of neural investment echo findings in other animal lineages and have important implications, given that a greater investment in higher-order processing has been shown to increase the prevalence of complex and flexible behaviors across the animal kingdom.

Indexed as

Biological EvolutionAnimalsBrainCognitionMushroom BodiesOrgan SizeSpecies SpecificityWasps

Identifiers

PMID21482775
PMCPMC3084094

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.