Evidence map›Paper›PMID 31640514›Full record

ArticleProceedings. Biological sciences2019

Sex biases in bird and mammal natural history collections.

Natalie Cooper, Alexander L Bond, Joshua L Davis, Roberto Portela Miguez, Louise Tomsett, Kristofer M Helgen

Abstract read
In one paragraph

Article in Proceedings. Biological sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

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  15. Sex biases in bird and mammal natural history collections.Proceedings. Biological sciences · 2019
    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

6 authors.

Natalie CooperDepartment of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK.
Alexander L BondDepartment of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK.
Joshua L DavisDepartment of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK.
Roberto Portela MiguezDepartment of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK.
Louise TomsettDepartment of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK.
Kristofer M HelgenDepartment of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Natural history specimens are widely used across ecology, evolutionary biology and conservation. Although biological sex may influence all of these areas, it is often overlooked in large-scale studies using museum specimens. If collections are biased towards one sex, studies may not be representative of the species. Here, we investigate sex ratios in over two million bird and mammal specimen records from five large international museums. We found a slight bias towards males in birds (40% females) and mammals (48% females), but this varied among orders. The proportion of female specimens has not significantly changed in 130 years, but has decreased in species with showy male traits like colourful plumage and horns. Body size had little effect. Male bias was strongest in name-bearing types; only 27% of bird and 39% of mammal types were female. These results imply that previous studies may be impacted by undetected male bias, and vigilance is required when using specimen data, collecting new specimens and designating types.

Indexed as

BirdsMammalsMuseumsAnimalsBiasFemaleMaleSex Factorsbirdsmammalsmuseum specimensnatural history collectionssex bias

Identifiers

PMID31640514
PMCPMC6834056

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.