Minority Advantage in Interpopulational Matings of Drosophila persimilis

Spiess, Luretta D.; Spiess, Eliot B.

doi:10.1086/282590

Cited by 47 publications

(23 citation statements)

References 9 publications

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“…Analytical details of these and other models of sexual selection have already been published (O 'Donald, 1973'Donald, , 1977b. The level of frequency-dependence found by Ehrman (1967), Spiess (1968) and Spiess and Spiess (1969) in their experiments on matings with Drosophila is in general agreement with that in the model with complete preference. However, in some of the data, a better fit to the general model with partial preferences can be obtained (O 'Donald, 1978).…”

Section: Females Mate At Random After Several Encounterssupporting

confidence: 72%

“…Experiments have usually shown that only the females exercise any preference for their mates (Ehrman, 1966(Ehrman, , 1967(Ehrman, , 1968(Ehrman, , 1969(Ehrman, , 1972Spiess, 1968;Spiess and Spiess, 1969). The mating preferences are complete if preferential mating always takes place whenever a choice can be made between the preferred individuals and the others.…”

Section: Introductionmentioning

confidence: 99%

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A general model of mating behaviour with natural selection and female preference

O'Donald

1978

Heredity

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A model is analysed in which female mating preferences are expressed partially, depending on the frequencies of the males. A female, who has been stimulated sufficiently to mate with a male of the phenotype she prefers, will only mate with another male after a certain number of extra encounters with the others. After n of these extra encounters, females with preferences mate randomly with any male. The probability that n encounters occur depends on the frequencies of the different male phenotypes. If n = 1, the mating advantage gained by the preferred males rises slightly as their frequency increases: either natural selection against the preferred phenotypes outweighs their mating advantage and they are eliminated, or they spread through the population to fixation; stable polymorphisms cannot become established. If n> 1, the mating advantage declines with increasing frequency: stable polymorphisms can exist over a range of values of the parameters of mating preference and natural selection.As n increases, the mating advantage becomes more strongly frequencydependent and a wider range of values of parameters gives rise to stable polymorphisms. When n> 5, the results are very close to those of models in which mating preferences are always expressed. The rates of selection and equilibrium frequencies are the same for preferred characters determined either by dominant or by recessive alleles. In the models the preferred character is either sex-limited and expressed only in males or expressed in both sexes. If it is expressed in both sexes, the effect of natural selection is doubled, and twice as many females must have the mating preference before the preferred character may start to spread through the population.

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Section: Females Mate At Random After Several Encounterssupporting

confidence: 72%

Section: Introductionmentioning

confidence: 99%

A general model of mating behaviour with natural selection and female preference

O'Donald

1978

Heredity

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“…Davis and O'Donald (1976) Mixed models with polygyny may be appropriate for the description of mating preferences for particular Drosophila genotypes. Generally, the evidence from the experiments of Ehrman and Spiess (Ehrman, 1966(Ehrman, , 1967(Ehrman, , 1968(Ehrman, , 1969(Ehrman, , 1972Spiess, 1968;Ehrman and Spiess, 1969;Spiess and Spiess, 1969) is consistent with models of sexual selection without assortment. O 'Donald (1977c) fitted models of mating preferences to some of Ehrman and Spiess' data of mating success of males at different frequencies.…”

Section: Introductionmentioning

confidence: 71%

“…There was no significant evidence for assortment in Spiess' data (Spiess, 1968;Spiess and Spiess, 1969) in which numbers of the females' genotypes were controlled in the mating choice experiments. However, specific mechanisms may give rise to assortment.…”

Section: Introductionmentioning

confidence: 89%

Some population genetic models combining sexual selection with assortative mating

Karlin

O'Donald

1978

Heredity

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SUMMARYSexual selection can be defined in terms of mating preferences which favour particular genotypes or phenotypes and which are expressed at the same level in all females without any degree of assortment in the matings. In this paper, population genetic models are analysed in which assortative mating is combined with sexual selection. If separate mating preferences for each of three genotypes at a locus give rise to sexual selection and if each genotype may also mate assortatively, then a wide range of conditions entails the establishment of a unique, globally stable equilibrium which coincides with the equilibrium for assortative mating alone. Under certain other conditions, however, one of two different stable equilibria will be established dependent on the parameters of both sexual selection and assortative mating. This multiplicity of equilibria cannot arise in models involving either sexual selection or assortative mating alone. If females prefer either dominant or recessive phenotypes, then the advent of sexual selection prohibits the fixation that would occur by assortative mating alone; the effect of sexual selection is to ensure that a globally stable equilibrium will be established. In the combined model, therefore, sexual selection for a dominant trait exerts a greater effect on the final outcome than assortative mating. However, in contradistinction to the model with dominance, assortative mating usually determines the outcome when genotypes are preferred and assort separately.

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“…Fertility has been shown to be affected by the genotype of the female and of the male with which it mates (7)(8)(9)(10)(11)(16)(17)(18)(19)(20). There also is a wealth of evidence showing that mate choice has significant selective consequences (20)(21)(22). At issue, however, is how a given male genotype would differentially affect females of diverse genotype.…”

Section: )mentioning

confidence: 99%

Alloprocoptic selection: A mode of natural selection promoting polymorphism

Serradilla¹,

Ayala²

1983

Proc. Natl. Acad. Sci. U.S.A.

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The fitness effect of genetic variation at three loci coding for enzymes is studied in Drosophila melanogaster. The fertility of a female is determined by the female genotype as well as by the genotype of the male with which she mates. Significant interactions exist between female and male genotype, so that the fertility of a given mating combination cannot be predicted from the average fertility of the two genotypes involved. Multiple stable equilibria are possible when such interactions exist. At two loci, the fertility is greater than expected when the two mating individuals are homozygous for different alleles and smaller than expected when they are homozygous for the same allele. This mode of selection in which association of opposites increases their fitness is herein named alloprocoptic selection. It will contribute to maintaining genetic polymorphism in nature.The discovery of increasingly numerous genetic polymorphisms in natural populations makes it ever more urgent to ascertain the processes that promote genetic variation in nature. The role of natural selection has been investigated in field as well as laboratory studies. The controlled conditions feasible in the laboratory have made it possible to study, in organisms such as Drosophila, the contributions of various components of the life cycle to fitness differences between genotypes. Fertility, viability, rate of development, longevity, and mating success have been implicated in one case or another.A hypothesis that has received little attention is that fertility (the number of zygotes produced per female) may be determined by mating type-i.e., by specific interactions between the two mating genotypes, not predictable from the average fertility of the genotypes involved. One important implication of this hypothesis is that more than one stable polymorphic equilibrium is possible (ref.

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Minority Advantage in Interpopulational Matings of Drosophila persimilis

Cited by 47 publications

References 9 publications

A general model of mating behaviour with natural selection and female preference

A general model of mating behaviour with natural selection and female preference

Some population genetic models combining sexual selection with assortative mating

Alloprocoptic selection: A mode of natural selection promoting polymorphism

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