Evidence map›Paper›PMID 32635870›Full record

ArticleProceedings. Biological sciences2020

Variation in the strength of allometry drives rates of evolution in primate brain shape.

G Sansalone, K Allen, J A Ledogar, S Ledogar, D R Mitchell, A Profico, S Castiglione, M Melchionna, C Serio, A Mondanaro and 2 more

Abstract read
In one paragraph

Article in Proceedings. Biological sciences, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

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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

12 authors.

G SansaloneFunction, Evolution and Anatomy Research Lab, Zoology Division, School of Environmental and Rural Science, University of New England, NSW 2351, Armidale, Australia.
K AllenDepartment of Neuroscience, Washington University School of Medicine in St Louis, MO, USA.
J A LedogarDepartment of Evolutionary Anthropology, Duke University, Durham, NC 27708, USA.
S LedogarFunction, Evolution and Anatomy Research Lab, Zoology Division, School of Environmental and Rural Science, University of New England, NSW 2351, Armidale, Australia.
D R MitchellFunction, Evolution and Anatomy Research Lab, Zoology Division, School of Environmental and Rural Science, University of New England, NSW 2351, Armidale, Australia.
A ProficoDipartimento di Biologia Ambientale, Sapienza Università di Roma, Roma, Italy.
S CastiglioneDepartment of Earth Sciences, Environment and Resources, Università degli Studi di Napoli Federico II, L.go San Marcellino 10, 80138, Naples, Italy.
M MelchionnaDepartment of Earth Sciences, Environment and Resources, Università degli Studi di Napoli Federico II, L.go San Marcellino 10, 80138, Naples, Italy.
C SerioDepartment of Earth Sciences, Environment and Resources, Università degli Studi di Napoli Federico II, L.go San Marcellino 10, 80138, Naples, Italy.
A MondanaroDepartment of Earth Sciences, Environment and Resources, Università degli Studi di Napoli Federico II, L.go San Marcellino 10, 80138, Naples, Italy.
P RaiaDepartment of Earth Sciences, Environment and Resources, Università degli Studi di Napoli Federico II, L.go San Marcellino 10, 80138, Naples, Italy.
S WroeFunction, Evolution and Anatomy Research Lab, Zoology Division, School of Environmental and Rural Science, University of New England, NSW 2351, Armidale, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Large brains are a defining feature of primates, as is a clear allometric trend between body mass and brain size. However, important questions on the macroevolution of brain shape in primates remain unanswered. Here we address two: (i), does the relationship between the brain size and its shape follow allometric trends and (ii), is this relationship consistent over evolutionary time? We employ three-dimensional geometric morphometrics and phylogenetic comparative methods to answer these questions, based on a large sample representing 151 species and most primate families. We found two distinct trends regarding the relationship between brain shape and brain size. Hominoidea and Cercopithecinae showed significant evolutionary allometry, whereas no allometric trends were discernible for Strepsirrhini, Colobinae or Platyrrhini. Furthermore, we found that in the taxa characterized by significant allometry, brain shape evolution accelerated, whereas for taxa in which such allometry was absent, the evolution of brain shape decelerated. We conclude that although primates in general are typically described as large-brained, strong allometric effects on brain shape are largely confined to the order's representatives that display more complex behavioural repertoires.

Indexed as

Biological EvolutionBrainPrimatesAnimalsBody SizePhylogenyallometrybrain shapeevolutionary ratesgeometric morphometricsphylogenetic comparative methodsprimates

Identifiers

PMID32635870
PMCPMC7423483

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.