Evidence map›Paper›PMID 26865297›Full record

ArticleProceedings. Biological sciences2016

Transcontinental latitudinal variation in song performance and complexity in house wrens (Troglodytes aedon).

Chinthaka Kaluthota, Benjamin E Brinkman, Ednei B Dos Santos, Drew Rendall

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings. Biological sciences, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
4.1field-weighted citation impact, top 7% 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

5 citing papers in PubMed, 45 citations in OpenAlex.

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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

4 authors at 2 institutions in 1 country.

Chinthaka KaluthotaBehaviour and Evolution Research Group, Department of Psychology, University of Lethbridge, Lethbridge, Alberta, Canada T1K 3M4.
Benjamin E BrinkmanBehaviour and Evolution Research Group, Department of Psychology, University of Lethbridge, Lethbridge, Alberta, Canada T1K 3M4.
Ednei B Dos SantosBehaviour and Evolution Research Group, Department of Psychology, University of Lethbridge, Lethbridge, Alberta, Canada T1K 3M4.
Drew RendallBehaviour and Evolution Research Group, Department of Psychology, University of Lethbridge, Lethbridge, Alberta, Canada T1K 3M4 Department of Biology, University of New Brunswick, PO Box 4400, Fredericton, New Brunswick, Canada E3B 5A3 d.rendall@unb.ca.
University of Lethbridge · CAUniversity of New Brunswick · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

There is growing interest in latitudinal effects on animal behaviour and life history. One recent focus is on birdsong, which is hypothesized to be more elaborated or complex in the north temperate zone compared with the tropics. Current evidence is mixed and based on cross-species comparisons, or single species with restricted distributions. We circumvent these limitations using a transcontinental sample of 358 songs from house wrens (Troglodytes aedon) at 281 locations spanning more than 100° of latitude (52° N-55° S) across the Americas. We found a significant latitudinal gradient in several basic elements of song performance and complexity between north temperate and tropical populations. Furthermore, we document convergence in song patterns between populations at higher latitudes in the Northern and Southern Hemispheres. Effects were strongest for the number of elements in a song, and the rate of element production, both increasing towards the poles, with similar but weaker effects for other song dimensions (e.g. number of unique elements, trills and trill rate). We consider possible causes related to variable habitats and morphology, concluding that the shorter breeding seasons at higher latitudes in both hemispheres may favour greater song elaboration to mediate territory competition and mate choice.

Indexed as

Animal DistributionVocalization, AnimalAnimalsCentral AmericaMaleNorth AmericaSongbirdsSouth AmericaTerritorialitygeographical variationlatitudinal gradientsexual selectionsongbirdssong complexitysong performance

Identifiers

PMID26865297
PMCPMC4760174
OpenAlexW2465182602

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.