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Evolution of sexual dimorphism in the Lepidoptera
Cerisse E Allen1, Bas J Zwaan, Paul M Brakefield
1Division of Biological Sciences, University of Montana, Missoula, Montana 59812, USA. cerisse.allen@mso.umt.edu
Annual Review of Entomology
|September 9, 2010
Summary
Sexual dimorphism in Lepidoptera (moths and butterflies) is driven by both sexual and natural selection. This study explores how these forces interact to shape differences between sexes, identifying mechanisms that facilitate or constrain evolution.
Area of Science:
- * Zoology
- * Evolutionary Biology
- * Entomology
Background:
- * Lepidoptera (moths and butterflies) exhibit significant intra- and interspecific diversity.
- * Sexual dimorphism is a key source of variation within Lepidoptera species, affecting life history, morphology, and behavior.
- * Previous research primarily attributed sexual dimorphism to sexual selection, neglecting alternative hypotheses.
Purpose of the Study:
- * To investigate the roles of sexual selection and natural selection in the evolution of sexual dimorphism in Lepidoptera.
- * To examine the interplay between sexual and natural selection.
- * To identify mechanisms that facilitate or constrain the evolution of sexual dimorphism.
Main Methods:
- * Review and synthesis of existing literature on sexual dimorphism in Lepidoptera.
- * Analysis of evolutionary pressures (sexual selection, natural selection) acting on sexual differences.
- * Exploration of potential constraints and facilitators of dimorphism evolution.
Main Results:
- * Sexual selection is a significant factor, but natural selection also plays a crucial role in shaping sexual dimorphism.
- * The interplay between sexual and natural selection is complex and varies across species.
- * Specific mechanisms influencing the evolution of sexual dimorphism were identified.
Conclusions:
- * Evolution of sexual dimorphism in Lepidoptera is shaped by a combination of sexual and natural selection.
- * Understanding these interacting forces provides a more comprehensive view of sexual dimorphism evolution.
- * Further research should focus on identifying specific evolutionary mechanisms rather than debating mutually exclusive hypotheses.
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