Sexual selection, natural selection and quality advertisement

Andersson, Malte

doi:10.1111/j.1095-8312.1982.tb02028.x

Cited by 447 publications

(300 citation statements)

References 61 publications

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“…This pattern is consistent with the genetic correlation between the male trait and total fitness postulated by the good genes hypothesis. Laboratory studies of several species have come to similar conclusions (reviewed by Andersson 1994).…”

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confidence: 73%

“…vious theoretical studies established that the mechanism can work in principle (Andersson 1982;Pomiankowski 1987a;Heywood 1989;Iwasa et al 1991), but they did not quantify the force of the good genes mechanism in terms of known quantities. The simulations here suggest that the good genes mechanism has modest effects under biologically plausible circumstances.…”

Section: Discussionmentioning

confidence: 99%

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Good Genes and Direct Selection in the Evolution of Mating Preferences

1996

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Abstract.-A model is used to study quantitatively the impact of a good genes process and direct natural selection on the evolution of a mating preference. The expression of a male display trait is proportional to genetic quality, which is determined by the number of deleterious mutations a male carries throughout his genome. Genetic variances and covariances, including the covariance between the preference and male trait that drives the good genes process, are allowed to evolve under an infinitesimal model. Results suggest that the good genes process generates only weak indirect selection on preferences, with an effective selection intensity of a few percent or less, If preferences are subject to direct natural selection of the intensity observed for other characters, the good genes process alone is not expected to exaggerate the male trait by more than a few phenotypic standard deviations, contrary to what is observed in highly sexually selected species, Good genes can, however, cause substantial exaggeration if preference genes are nearly selectively neutral. Alternatively, direct selection on preference genes, acting on mating behavior itself or on the genes' pleiotropic effects, can cause mating preferences and male display traits to be exaggerated by any degree. Direct selection of preference genes may therefore play an important role in species that show extreme sexual selection, Key words,-Deleterious mutation, direct selection, good genes, mate choice, mating preferences, sexual selection.Received July 20, 1995. Accepted July 18, 1996 Two forces thought to be involved in the evolution of female mating preferences in many species are direct selection acting on preference genes and the" good genes" mechanism (reviewed by Kirkpatrick and Ryan 1991;Andersson 1994). Direct selection on a preference occurs when genes that affect the preference also have direct effects on survival or fecundity. The good genes mechanism operates when females choose mates using male traits that are genetically correlated with total fitness. A genetic association then naturally develops between preference and fitness alleles, which causes the preference and consequently the male display character to become exaggerated (Fisher 1958;Pomiankowski 1988).Both mechanisms can in theory produce the spectacular extremes of sexual selection seen, for example, in lek-breeding birds. The good genes process favors ever-greater elaboration of the preference and male trait. In the absence of any other constraining factors, it will cause both the preference and trait to become exaggerated without limit (Porniankowski 1988;Heywood 1989). Direct selection can likewise generate extreme preferences and male displays, In the absence of good genes or other effects, direct selection will establish preferences that maximize immediate survival and fecundity. If those preferences happen to favor an exaggerated display that drastically decreases male survival, the result is the same: there is no evolutionary penalty to mating preferences for extreme male tr...

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confidence: 73%

Section: Discussionmentioning

confidence: 99%

Good Genes and Direct Selection in the Evolution of Mating Preferences

1996

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“…While previous studies of absolute preference in polygamous populations (e.g. O'Donald 1973;Bell 1978;Karlin 1978;Andersson 1982;Maynard Smith 1985) could either follow the evolution of the secondary sexual trait, assuming that the associated preference does not evolve, or study the joint evolution of the traits only numerically, the present paper provides a complete coevolutionary analysis that is not constrained to a simulation study. It also generalizes the previous treatments by allowing the probability, m 2 , of selective mating to vary, and more importantly, this seems to be the first to show in explicit terms that the absolute preference model alone can cause the initiation of a Fisherian process.…”

Section: Discussion (A) General Remarksmentioning

confidence: 99%

“…A number of studies have argued that a certain type of handicap may cause sexual selection by mate choice in polygamous populations (e.g. Bell 1978;Andersson 1982). It seems, however, that this may in part be an artifact due to the unrealistic nature of the absolute preference model.…”

Section: Discussion (A) General Remarksmentioning

confidence: 99%

“…O'Donald (1973) employed this mating rule to study the evolution of the male ornament in polygynous populations. While this model was rather rarely employed in the analyses based on polygamous mating (Bell 1978;Andersson 1982;Maynard Smith 1985; see also Karlin 1978), the special case m 2 = 1 has been the standard rule under monogamy (Bell 1978;O'Donald 1980;Andersson 1982Andersson , 1986. Although this rule may lead to an unrealistic situation such as an extreme monopolization of mates by a very small number of individuals (O'Donald 1973;Maynard Smith 1985) some empirical backgrounds have also been reported (O'Donald 1977b; see also § 3).…”

Section: (B) Absolute Preference Modelmentioning

confidence: 99%

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Models of selective mating and the initiation of the Fisherian process

Takahasi

1997

Proc. R. Soc. Lond. B

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SUMMARYThe effects of various rules of selective mating on the initial stages of Fisherian sexual selection are investigated. A comparison of three models of selective mating, fixed relative preference, best of N males and absolute preference is provided, with a special emphasis on their mathematical properties. Using a two-locus haploid model of sexual selection in a polygamous population, I show that the absolute preference rule of selective mating may lower the threshold frequency of the preference trait, required for the initiation of the Fisherian process, as low as zero. This was not observed in the previous analyses with fixed relative preference or best of N males rules. It is then argued that absolute preference may cause the initiation of the Fisherian process more easily without introducing additional assumptions such as pleiotropy or random genetic drift. Some problems associated with the mating rule are also discussed.

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Functional Approach to Condition

Wilgers

Hebets

2014

Animal Signaling and Function

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Sexual selection, natural selection and quality advertisement

Cited by 447 publications

References 61 publications

Good Genes and Direct Selection in the Evolution of Mating Preferences

Good Genes and Direct Selection in the Evolution of Mating Preferences

Models of selective mating and the initiation of the Fisherian process

Functional Approach to Condition

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