1987
DOI: 10.1038/hdy.1987.113
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Natural selection and the heritability of fitness components

Abstract: The hypothesis that traits closely associated with fitness will generally possess lower heritabilities than traits more loosely connected with fitness is tested using 1120 narrow sense heritability estimates for wild, outbred animal populations, collected from the published record. Our results indicate that life history traits generally possess lower heritabilities than morphological traits, and that the means, medians, and cumulative frequency distributions of behavioural and physiological traits are intermed… Show more

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Cited by 1,473 publications
(1,182 citation statements)
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References 127 publications
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“…The mean effect size for studies performed on morphometric traits (0.0313, nZ19, table 2) was almost four times higher than the effect size for non-morphometric traits, which was in fact not significantly different from zero (0.0084, nZ21), although the difference between the two was not significant (table 2). As classical population genetics theory predicts (Mousseau & Roff 1987;Falconer & Mackay 1996), life-history traits, which are more closely related to fitness than morphometric traits, have lower heritabilities (but see Price & Schluter 1991;Kruuk et al 2000;Merilä & Sheldon 2000). Hence, the absence of variation in heritability between different ecological conditions for these traits could be partly a result of the fact that any variation will be harder to detect for smaller values.…”
Section: Trends In Heritability Across Environmentsmentioning
confidence: 99%
“…The mean effect size for studies performed on morphometric traits (0.0313, nZ19, table 2) was almost four times higher than the effect size for non-morphometric traits, which was in fact not significantly different from zero (0.0084, nZ21), although the difference between the two was not significant (table 2). As classical population genetics theory predicts (Mousseau & Roff 1987;Falconer & Mackay 1996), life-history traits, which are more closely related to fitness than morphometric traits, have lower heritabilities (but see Price & Schluter 1991;Kruuk et al 2000;Merilä & Sheldon 2000). Hence, the absence of variation in heritability between different ecological conditions for these traits could be partly a result of the fact that any variation will be harder to detect for smaller values.…”
Section: Trends In Heritability Across Environmentsmentioning
confidence: 99%
“…The phenotypic (co)variances are made up of the genetic and environmental (co)variances. Morphological traits typically have high heritabilities and genetic correlations (Mousseau and Roff, 1987;Roff, 1996). Consequently, we would expect that the phenotypic and genetic (co)variances will also be highly correlated.…”
Section: Variation In Phenotypic Meansmentioning
confidence: 99%
“…Fitness-related traits, such as fecundity and survival, usually show lower heritabilities than physiological and behavioral traits, which are in turn less heritable than morphological traits (Mousseau and Roff, 1986). Several hypotheses can be proposed to explain how genetic variation for survival is maintained in French C. gigas populations.…”
Section: Survivalmentioning
confidence: 99%