Journal ArticleDOI
Sexual Dimorphism in Weight Among the Primates: The Relative Impact of Allometry and Sexual Selection
Steven J. C. Gaulin,Lee Sailer +1 more
Reads0
Chats0
TLDR
It is proposed that the overall size of a species determines whether theDimorphism will be expressed as size dimorphism,rather than in some other form, and that sexual selection due to differences in the reproductive potential of males and females is the primary cause of sexual Dimorphism.Abstract:
In this paper, we examine allometric and sexual-selection explanations for interspecific differences in the amount of sexual dimorphism among 60 primate species. Based on evidence provided by statistical analyses, we reject Leutenegger and Cheverud’s [(1982). Int. J. Primatol.3:387-402] claim that body size alone is the major factor in the evolution of sexual dimorphism. The alternative proposed here is that sexual selection due to differences in the reproductive potential of males and females is the primary cause of sexual dimorphism. In addition, we propose that the overall size of a species determines whether the dimorphism will be expressed as size dimorphism,rather than in some other form.read more
Citations
More filters
Book
Male, Female: The Evolution of Human Sex Differences
TL;DR: Geary presents a theoretical bridge linking parenting, mate choices, and competition, with children's development and sex differences in brain and cognition, in a lively and nuanced application of Darwin's insight to help explain the authors' heritage and their place in the natural world.
Journal ArticleDOI
Allometry for Sexual Size Dimorphism: Pattern and Process in the Coevolution of Body Size in Males and Females
TL;DR: These trends are derived from a sample of 40 independent clades of terrestrial animals, primarily vertebrates, and indicate that SSD increases with size where males are the larger sex, but decreases with sizeWhere females are larger, a trend formalized as “Rensch's rule.”
Book ChapterDOI
Male Aggression and Sexual Coercion of Females in Nonhuman Primates and Other Mammals: Evidence and Theoretical Implications
Barbara B. Smuts,Robert w. Smuts +1 more
TL;DR: Although Trivers' general rule has many exceptions, it accurately identifies the primary source of conflict between the sexes: in most sexual organisms most of the energy and time invested in offspring comes from females.
Journal ArticleDOI
The quantitative assessment of phylogenetic constraints in comparative analyses: sexual dimorphism in body weight among primates.
TL;DR: The separation of phylogenetic from specific effects proposed here also allows phylogenetic factors to be explicitly included in cross‐species comparative analyses of adaptation, which solves a long‐standing problem in evolutionary comparative studies.
Journal ArticleDOI
Beauty and the beast: mechanisms of sexual selection in humans
TL;DR: The twodimensionality of the human mating environment, along with phylogeny, the spatial and temporal clustering of mates and competitors, and anatomical considerations, predict that contest competition should have been the primary mechanism of sexual selection in men and a functional analysis supports this prediction.
References
More filters
Book
Applied Regression Analysis
Norman R. Draper,Harry Smith +1 more
TL;DR: In this article, the Straight Line Case is used to fit a straight line by least squares, and the Durbin-Watson Test is used for checking the straight line fit.
Book ChapterDOI
Parental investment and sexual selection
TL;DR: The p,cnetics of sex nas now becn clarif ied, and Fishcr ( 1958 ) hrs produccd , n,od"l to cxplarn sex ratios at coDception, a nrodel recently extendcd to include special mccha_ nisms that operate under inbreeding (Hunrilron I96?).