Chapter

Social Behavior, Sexual Selection, and Sexual Dimorphism

Jonathan B. Losos

in Lizards in an Evolutionary Tree

Published by University of California Press

Published in print August 2009 | ISBN: 9780520255913
Published online March 2012 | e-ISBN: 9780520943735 | DOI: http://dx.doi.org/10.1525/california/9780520255913.003.0009
Social Behavior, Sexual Selection, and Sexual Dimorphism

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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

Chapter.  11072 words.  Illustrated.

Subjects: Evolutionary Biology

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