Jump to ContentJump to Main Navigation
Sex, Size and Gender RolesEvolutionary Studies of Sexual Size Dimorphism$
Users without a subscription are not able to see the full content.

Daphne J. Fairbairn, Wolf U. Blanckenhorn, and Tamás Székely

Print publication date: 2007

Print ISBN-13: 9780199208784

Published to Oxford Scholarship Online: September 2007

DOI: 10.1093/acprof:oso/9780199208784.001.0001

Show Summary Details
Page of

PRINTED FROM OXFORD SCHOLARSHIP ONLINE (www.oxfordscholarship.com). (c) Copyright Oxford University Press, 2018. All Rights Reserved. Under the terms of the licence agreement, an individual user may print out a PDF of a single chapter of a monograph in OSO for personal use (for details see www.oxfordscholarship.com/page/privacy-policy).date: 18 October 2018

Sexual size dimorphism in amphibians: an overview

Sexual size dimorphism in amphibians: an overview

Chapter:
(p.50) Chapter 5 Sexual size dimorphism in amphibians: an overview
Source:
Sex, Size and Gender Roles
Author(s):

Alexander Kupfer

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199208784.003.0006

This chapter reviews patterns of sexual dimorphism in amphibians and discusses their proximal causes and possible adaptive significance. Amphibians are diverse organisms that live in aquatic or terrestrial ecosystems. Female-biased sexual size dimorphism (SSD) is the common pattern in frogs and salamanders, and male-biased SSD is only present in few lineages. Preliminary SSD data for caecilians indicate that many are monomorphic in body size, while others exhibit female-biased dimorphism. The typical female-biased SSD may be partly explained by sex-specific growth trajectories and delayed maturity of females. Male-biased SSD is associated with sexual selection for large males through territoriality and male-male combat. In comparison with other vertebrates, our understanding of SSD in amphibians is still incomplete. Phylogenetic comparative analyses are needed to describe more fully the evolutionary patterns of amphibian SSD and to test hypotheses based on fecundity and sexual selection, life history theory, and ecological divergence.

Keywords:   caecilians, frogs, growth trajectory, salamanders, sexual selection

Oxford Scholarship Online requires a subscription or purchase to access the full text of books within the service. Public users can however freely search the site and view the abstracts and keywords for each book and chapter.

Please, subscribe or login to access full text content.

If you think you should have access to this title, please contact your librarian.

To troubleshoot, please check our FAQs , and if you can't find the answer there, please contact us .