Evidence map›Paper›PMID 40027421›Full record

ArticleEcology and evolution2025

Sperm mtDNA Copy Number Is Not Associated With Midpiece Size Among Songbirds.

Laima Bagdonaitė, Quentin Mauvisseau, Arild Johnsen, Jan T Lifjeld, Erica H Leder

Abstract read
In one paragraph

Article in Ecology and evolution, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

5 authors.

Laima BagdonaitėNatural History Museum University of Oslo Oslo Norway.ORCID https://orcid.org/0000-0003-0301-6772
Quentin MauvisseauNatural History Museum University of Oslo Oslo Norway.ORCID https://orcid.org/0000-0003-1215-2987
Arild JohnsenNatural History Museum University of Oslo Oslo Norway.ORCID https://orcid.org/0000-0003-4864-6284
Jan T LifjeldNatural History Museum University of Oslo Oslo Norway.ORCID https://orcid.org/0000-0002-9172-9985
Erica H LederNatural History Museum University of Oslo Oslo Norway.ORCID https://orcid.org/0000-0002-7160-2290

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Tremendous variation in sperm morphology is observed across the animal kingdom. Within avian taxa, the songbirds (infraorder Passerides) have the largest variation in sperm morphology. Their spermatozoa move by using energy generated in the midpiece, which is formed by multiple mitochondria fusing together during spermatogenesis. However, very little is known regarding the number of mitochondria required to form the songbird midpiece. Based on previous research showing an association of midpiece length and mitochondrial DNA (mtDNA) copy number in the zebra finch

Indexed as

midpiece sizemitochondrial DNAPasseridessperm evolution

Identifiers

PMID40027421
PMCPMC11872201

What OpenQuestion holds

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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.