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ALLOMETRY FOR SEXUAL SIZE DIMORPHISM:Pattern and Process in the Coevolution of Body Size in Males and Females

Fairbairn, D. J

Annual review of ecology and systematics, 1997-01, Vol.28 (1), p.659-687

Palo Alto, CA 94303-0139: Annual Reviews

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Título:
ALLOMETRY FOR SEXUAL SIZE DIMORPHISM:Pattern and Process in the Coevolution of Body Size in Males and Females
Autor: Fairbairn, D. J
Assuntos: allometric constraint ; Allometry ; Biological and medical sciences ; Biological evolution ; Body size ; correlational selection ; Evolution ; Female animals ; Fundamental and applied biological sciences. Psychology ; genetic correlation ; Genetics of eukaryotes. Biological and molecular evolution ; Male animals ; Mating behavior ; Primates ; Sexual dimorphism ; Sexual selection ; Statistical variance
É parte de: Annual review of ecology and systematics, 1997-01, Vol.28 (1), p.659-687
Descrição: Sexual size dimorphism (SSD) is common in both plants and animals, and current evidence suggests that it reflects the adaptation of males and females to their different reproductive roles. When species are compared within a clade, SSD is frequently found to vary with body size. This allometry is detected as β ≠ 1, where β is the slope of a model II regression of log(male size) on log(female size). Most frequently, β exceeds 1, indicating that SSD increases with size where males are the larger sex, but decreases with size where females are larger, a trend formalized as "Rensch's rule." Exceptions are uncommon and associated with female-biased SSD. These trends are derived from a sample of 40 independent clades of terrestrial animals, primarily vertebrates. Their extension to plants and aquatic animals awaits quantitative assessments of allometry for SSD within these groups. Many functional hypotheses have been proposed to explain the evolution of allometry for SSD, most featuring sexual selection on males or reproductive selection on females. Of these, the hypothesis that allometry evolves because of correlational selection between the sexes appears most promising as a general model but remains untested.
Editor: Palo Alto, CA 94303-0139: Annual Reviews
Idioma: Inglês

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ALLOMETRY FOR SEXUAL SIZE DIMORPHISM:Pattern and Process in the Coevolution of Body Size in Males and Females

Fairbairn, D. J

Palo Alto, CA 94303-0139: Annual Reviews

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