Evidence map›Paper›PMID 33151970›Full record

ArticlePloS one2020

The dark ventral patch: A bimodal flexible trait related to male competition in red deer.

Juan Carranza, Eva de la Peña, Concha Mateos, Javier Pérez-González, Susana Alarcos, Jerónimo Torres-Porras, Juliana Valencia, Cristina Sánchez-Prieto, Leticia Castillo

Abstract read
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

6 citing papers in PubMed.

  1. Article
  2. Article
  3. Proteomics of the Dark-Ventral-Patch Sexual Signal in Male Red Deer.Animals : an open access journal from MDPI · 2025
    Article
  4. Article
  5. Article
  6. 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

9 authors.

Juan CarranzaWildlife Research Unit (UiRCP), University of Córdoba, Córdoba, Spain.ORCID 0000-0002-0368-7173
Eva de la PeñaWildlife Research Unit (UiRCP), University of Córdoba, Córdoba, Spain.
Concha MateosBiology & Ethology, University of Extremadura, Cáceres, Spain.
Javier Pérez-GonzálezBiology & Ethology, University of Extremadura, Cáceres, Spain.
Susana AlarcosBiology & Ethology, University of Extremadura, Cáceres, Spain.
Jerónimo Torres-PorrasDepartment of Social and Experimental Sciences Teaching, Faculty of Educational Sciences, University of Córdoba, Córdoba, Spain.
Juliana ValenciaExperimental Sciences Teaching, Faculty of Educational Sciences, University of Málaga, Málaga, Spain.
Cristina Sánchez-PrietoBiology & Ethology, University of Extremadura, Cáceres, Spain.
Leticia CastilloBiology & Ethology, University of Extremadura, Cáceres, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Sexual signals play a central role in male-male competition in polygynous species. In red deer (Cervus elaphus), male's ventral area become dark during the rutting season due to urine spraying behaviour and retains many chemical compounds potentially revealing individual features. Here we investigate the variation in size of this trait, exploring its relationship with age and male competitive features such as antlers or body size, as well as populational level of intrasexual competition for mates. We found that the size of the dark ventral patch followed a clearly bimodal distribution, i.e. males mostly expressed the full-size trait or just developed a very small one. For these two groups of males according to trait expression, the relationships of trait size with age and antler size differed. Populational level of intrasexual competition appeared to affect the relationship between antler size and the probability of a fully developed ventral patch. These results indicate that the trait encodes information on body size, antler size, age and populational level of mate competition, thus suggesting a role in signalling male's competitive features and willingness to allocate reproductive effort within a particular season.

Indexed as

Competitive BehaviorQuantitative Trait, HeritableAnimalsDeerMaleModels, BiologicalProbability

Identifiers

PMID33151970
PMCPMC7644014

What OpenQuestion holds

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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.