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Article: The evolution of sexual size dimorphism: the interplay between natural and sexual selection.(Report)
- Article from:
- Journal of Orthoptera Research
- Article date:
- July 1, 2008
- Author:
CopyrightCOPYRIGHT 2008 The Orthopterists' Society. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Evolution of sexual size dimorphism: effects of natural and sexual selection
The direction and magnitude of selection on body size may differ between sexes and generate sexual size dimorphism (SSD). SSD may result from an interplay between sexual and natural selection (Slatkin 1984, Hedrick & Temeles 1989, Shine 1989, Fairbairn 1997). In insects, body size in both males and females is a target of directional selection. Large females generally have higher fecundity (because of larger clutches), and thus natural selection may favor large female body size (Ridley 1983, Fairbairn 1997). On the other hand, large males often have advantages in male-male competition and ...