Male mating speed as a component of fitness inDrosophila

Pa, Parsons

doi:10.1007/bf01066159

Cited by 41 publications

(25 citation statements)

References 25 publications

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“…Considering mating ability, the majority of significant differences were associated with males (table 3) in accord with the Chateau Tahbilk data (see Introduction) and the general conclusion that male mating speed is a most important fitness component in Drosophi!a (Parsons, 1974). Further, in accord with the Chateau Tahbilk data, each significant departure from random mating involved heterozygote excess which was especially evident at 29°C, suggesting an extreme environment effect.…”

Section: Fitness and Temperaturesupporting

confidence: 71%

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Environment-dependent fitness differences in Drosophila melanogaster: temperature, domestication and the alcohol dehydrogenase locus

Kohane

Parsons

1986

Heredity

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(a) Phenotypic fitnesses were estimated over the temperature range 15°C to 29°C for genotypes at the alcohol dehydrogenase (Adh) locus. The traits measured were egg and larval survival, development time and mating ability in single generation experiments, and total fitness by gene frequency changes in discrete generation populations.(b) Significant temperature-dependent fitness associations involving the Adh locus were obtained for isofemale strains which had been in the laboratory for eighteen months. Heterozygote advantage was general in the single generation experiments, and in the populations the AdhF allele increased in frequency.(c) In contrast, populations obtained directly from the field did not show these fitness associations. It was not therefore possible to attribute the genotypic fitness differences detected for the laboratory strains directly to the Adh locus. Indeed, the contrast between the laboratory-adapted and field collected flies may provide a model of likely change under domestication whereby the higher variability of the laboratory strains may be a manifestation of the "stress" involved in the adaptation of populations to laboratory conditions.(d) The results emphasise the need to commence at the phenotypic level in attempting to understand fitness relationships in natural populations and it is suggested that direct assessments of the effects of environmental stresses of ecological significance may provide an initial strategy.

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Section: Fitness and Temperaturesupporting

confidence: 71%

“…This also suggests that there is more additive genetic variance for survival and development time compared with mating ability, with mating ability being apparently subject to intense directional selection irrespective of habitat (Parsons, 1974 (Hoffmann et al, 1984).…”

Section: Domesticationmentioning

confidence: 93%

Environment-dependent fitness differences in Drosophila melanogaster: temperature, domestication and the alcohol dehydrogenase locus

Kohane

Parsons

1986

Heredity

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“…When, for each locus, the fitness of the 2 homozygotes is estimated relative to the heterozygote (pooling homozygotes of similar mobility and heterozygotes with heterozygotes), evidence for overdominance arises for Idh-2 (WI\,, = 0.62, W,, = 0.64) and 6-Pgd (W,4A -0.69, W,, = 0.56) and the heterozygote is slightly inferior for Idh-l (W,, = 1.17, W,, = 1.10). Overdominant selection for Idh-2 and 6-Pgd does not necessailly mean that selection is favouring heterozygotes for these loci as selection may be favouring heterozygotes at closely linked The experlmental design allows us to ask whether heterozygous males are at a n advantage for matingspeed, a n important component of fitness (Parsons 1974, Hedrick & Murray 1983. Differences in heterozygosity between early and late mating males were tested by the G-test with Williams' correction.…”

Section: Heterozygosity At Single Loci and Sexual Selectionmentioning

confidence: 99%

Multilocus heterozygosity and sexual selection in the brine shrimp Artemia franciscana

Gajardo¹,

Beardmore²

1990

Mar. Ecol. Prog. Ser.

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A study to test for an association between multilocus heterozygosity and male sexual selection was conducted in an experimental population of the brine shrimp Artemia franclscana. A significant positive correlation between male mating success and heterozygosity was detected This is the first report of an association between male sexual selection and multilocus heterozygosity. The results add to the evidence suggesting that a correlation of this type applies to all components of total Darwinian fitness. The observed correlation is interpreted in the light of the major hypotheses proposed to explain such correlations.

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“…Parsons, 1974). Under certain experimental conditions it appears to be the major factor influencing gene frequency changes (Prout, 1971;Bundgaard & Christiansen, 1972).…”

Section: Grh 40mentioning

confidence: 99%

Competitive mating inDrosophila melanogaster

Sharp¹

1982

Genet. Res.

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SUMMARYSelective differences among male Drosophila melanogaster due to differences in ability to compete for mates may often have been under-estimated in the past because, under the test procedure used, females did not represent a limited resource. In the experiment reported here, no difference was detected between inbred and outbred males ‘competing’ to mate with an equal number of females. When the receptive female: male ratio was halved a large reduction in male mating ability due to inbreeding became apparent.

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Male mating speed as a component of fitness inDrosophila

Cited by 41 publications

References 25 publications

Environment-dependent fitness differences in Drosophila melanogaster: temperature, domestication and the alcohol dehydrogenase locus

Environment-dependent fitness differences in Drosophila melanogaster: temperature, domestication and the alcohol dehydrogenase locus

Multilocus heterozygosity and sexual selection in the brine shrimp Artemia franciscana

Competitive mating inDrosophila melanogaster

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