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Lizards in an Evolutionary TreeEcology and Adaptive Radiation of Anoles$
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Jonathan Losos

Print publication date: 2009

Print ISBN-13: 9780520255913

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520255913.001.0001

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Social Behavior, Sexual Selection, and Sexual Dimorphism

Social Behavior, Sexual Selection, and Sexual Dimorphism

(p.161) 9 Social Behavior, Sexual Selection, and Sexual Dimorphism
Lizards in an Evolutionary Tree

Jonathan B. Losos

University of California Press

Sexual selection is the advantage that certain individuals have over others of the same sex and species, solely in respect of reproduction. The biology of anoles opens the door to the existence of varied ways in which sexual selection may occur, such as sperm competition and cryptic female choice. This chapter explores the behavior and reproductive biology of anoles. It examines social behavior with regard to sexual selection by considering what an anole does with its time: how much of their day do anoles allocate to different activities, and how do such allocations differ between the sexes and across the seasons? The chapter assesses the importance of sexual selection and the forms it takes, both within anole populations and potentially over evolutionary time spans, and examines variation in sexual dimorphism in both size and shape in anoles.

Keywords:   sexual selection, anoles, sperm competition, cryptic female choice, reproductive biology, social behavior, sexual dimorphism

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