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Related Experiment Video

Updated: Jun 5, 2026

Visually Sexing Loggerhead Shrike (Lanius Ludovicianus) Using Plumage Coloration and Pattern

Visually Sexing Loggerhead Shrike (Lanius Ludovicianus) Using Plumage Coloration and Pattern

Published on: March 8, 2020

Recent developments in sex ratio studies.

H C Godfray¹, J H Werren

¹Dept of Biology, and NERC Centre for Population Biology, Imperial College at Silwood Park, Ascot, UK SL5 7PY.

Trends in Ecology & Evolution

|January 18, 2011

Summary

Natural selection shapes the sex ratio by influencing resource allocation to male and female offspring. This review covers recent advances in sex allocation theory and its applications in evolutionary biology.

Area of Science:

Evolutionary Biology
Reproductive Strategies

Background:

Resource allocation to male and female offspring is central to reproductive strategies in sexual organisms.
Sex ratio evolution has been a focus of intensive theoretical and experimental research for three decades.

Purpose of the Study:

To discuss recent developments in sex allocation theory.
To highlight new applications of sex allocation theory.
To identify unresolved issues in the field.

Main Methods:

Review of theoretical frameworks in sex allocation.
Synthesis of experimental findings related to sex ratio.
Analysis of recent advancements and applications.

Main Results:

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Last Updated: Jun 5, 2026

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Sex allocation theory provides a robust framework for understanding reproductive strategies.

Recent developments have expanded the scope and applicability of the theory.

Several key questions remain unresolved, guiding future research.

Conclusions:

Sex allocation theory continues to be a dynamic field with significant implications for evolutionary biology.
Further research is needed to address outstanding questions and refine theoretical models.