Evidence map›Paper›PMID 30890071›Full record

ArticleBiology letters2019

Digit ratio predicts the number of lifetime recruits in female collared flycatchers.

Gergely Nagy, László Zsolt Garamszegi, Gergely Hegyi, Márton Herényi, Miklós Laczi, Balázs Rosivall, Eszter Szöllősi, János Török

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Biology letters, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing 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

2 citing papers in PubMed.

  1. Article
  2. 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

8 authors.

Gergely Nagy1 Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University , Pázmány Péter sétány 1/C, Budapest H-1117 , Hungary.
László Zsolt Garamszegi1 Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University , Pázmány Péter sétány 1/C, Budapest H-1117 , Hungary.
Gergely Hegyi1 Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University , Pázmány Péter sétány 1/C, Budapest H-1117 , Hungary.
Márton Herényi1 Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University , Pázmány Péter sétány 1/C, Budapest H-1117 , Hungary.
Miklós Laczi1 Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University , Pázmány Péter sétány 1/C, Budapest H-1117 , Hungary.
Balázs Rosivall1 Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University , Pázmány Péter sétány 1/C, Budapest H-1117 , Hungary.
Eszter Szöllősi1 Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University , Pázmány Péter sétány 1/C, Budapest H-1117 , Hungary.
János Török1 Behavioural Ecology Group, Department of Systematic Zoology and Ecology, Eötvös Loránd University , Pázmány Péter sétány 1/C, Budapest H-1117 , Hungary.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The early environment in which an organism grows can have long-lasting impacts on both its phenotype and fitness. However, assessing this environment comprehensively is a formidable task. The relative length of the second to the fourth digit (2D : 4D) is a broadly studied skeletal trait that is fixed for life during ontogeny. 2D : 4D has been shown to indicate various early effects including the perinatal steroid milieu in both humans and non-human animals. However, the fitness relevance of the early effects indicated by 2D : 4D remains unknown. Here, we investigated hindlimb 2D : 4D and measures of lifetime performance in wild collared flycatcher ( Ficedula albicollis) females. We found that females with higher 2D : 4D had a greater number of recruiting offspring to the breeding population. This was the case despite the fact that such females did not lay more eggs or breed more frequently during their reproductive life. Our results support the suggestion that 2D : 4D, known to be a retrospective marker of perinatal development, positively associates with female quality in the collared flycatcher.

Indexed as

PasseriformesSongbirdsAnimalsBreedingFemaleFingersHumansReproductionRetrospective Studiescollared flycatcherdigit ratioearly environmentfitnesslifetime reproductive successsteroid hormone

Identifiers

PMID30890071
PMCPMC6451388

What OpenQuestion holds

Textmetadata
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.