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Visually Sexing Loggerhead Shrike Lanius Ludovicianus Using Plumage Coloration and Pattern

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Polyandry in nature: a global analysis.

Michelle L Taylor¹, Tom A R Price², Nina Wedell¹

¹Centre for Ecology and Conservation, University of Exeter, Penryn Campus, Treliever Road, Penryn, TR10 9FE, UK.

Trends in Ecology & Evolution

|May 17, 2014

Summary

This summary is machine-generated.

Female polyandry, where females mate with multiple males, is common but varies. This study examines its global effects on population fitness, including heterozygosity and effective population size (Ne).

Keywords:

heterozygosity latitude monandry polyandry population fitness sperm competition

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Area of Science:

Evolutionary Biology
Behavioral Ecology
Population Genetics

Background:

Polyandry, the mating of females with multiple males, is a widely accepted concept in sexual selection.
Previous research suggested polyandry is common, but large-scale evidence from natural populations is needed for verification.
Understanding polyandry's prevalence and variability is crucial for sexual selection theory.

Purpose of the Study:

To verify the assumption of widespread female polyandry using large-scale evidence from natural populations.
To investigate the variability of polyandry and the persistence of single paternity.
To explore the relationship between polyandry and latitude, and its global effects on population fitness.

Main Methods:

Large-scale analyses of natural populations.
Examination of key population fitness variables: heterozygosity, effective population size (Ne), and inbreeding coefficients.
Comparative studies across different populations and latitudes.

Main Results:

Polyandry is confirmed as a generally common and ubiquitous phenomenon across natural populations.
Significant variability in polyandry rates was observed, with single paternity persisting in some contexts.
An intriguing relationship between polyandry and latitude was identified.

Conclusions:

While polyandry is widespread, its prevalence and impact are variable and warrant further investigation.
The persistence of single paternity requires careful consideration in evolutionary studies.
Large-scale analyses reveal the global effects of polyandry on population fitness, linking it to heterozygosity, Ne, and inbreeding.