Evidence map›Paper›PMID 34350009›Full record

ReviewRoyal Society open science2021

Physiological factors influencing female fertility in birds.

Katherine Assersohn, Patricia Brekke, Nicola Hemmings

Open access · goldAbstract readReview
In one paragraph

Review in Royal Society open science, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
5.0field-weighted citation impact, top 4% of its field
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

19 citing papers in PubMed, 43 citations in OpenAlex.

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  10. Demographic drivers of reproductive failure in a threatened bird: Insights from a decade of data.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
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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

3 authors at 2 institutions in 1 country.

Katherine AssersohnDepartment of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK.ORCID 0000-0002-1085-0266
Patricia BrekkeInstitute of Zoology, Zoological Society of London, Regents Park, London NW1 4RY, UK.ORCID 0000-0001-6298-3194
Nicola HemmingsDepartment of Animal and Plant Sciences, University of Sheffield, Sheffield S10 2TN, UK.ORCID 0000-0003-2418-3625
University of Sheffield · GBZoological Society of London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Fertility is fundamental to reproductive success, but not all copulation attempts result in a fertilized embryo. Fertilization failure is especially costly for females, but we still lack a clear understanding of the causes of variation in female fertility across taxa. Birds make a useful model system for fertility research, partly because their large eggs are easily studied outside of the female's body, but also because of the wealth of data available on the reproductive productivity of commercial birds. Here, we review the factors contributing to female infertility in birds, providing evidence that female fertility traits are understudied relative to male fertility traits, and that avian fertility research has been dominated by studies focused on Galliformes and captive (relative to wild) populations. We then discuss the key stages of the female reproductive cycle where fertility may be compromised, and make recommendations for future research. We particularly emphasize that studies must differentiate between infertility and embryo mortality as causes of hatching failure, and that non-breeding individuals should be monitored more routinely where possible. This review lays the groundwork for developing a clearer understanding of the causes of female infertility, with important consequences for multiple fields including reproductive science, conservation and commercial breeding.

Indexed as

egg productionfemale fertilityfertilizationhatching failurereproductionsperm storage

Identifiers

PMID34350009
PMCPMC8316823
OpenAlexW3184562438

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.