Mating speed and duration of copulation in Drosophila pseudoobscura

Parsons, P. A.; Kaul, D.

doi:10.1038/hdy.1966.19

Cited by 56 publications

(30 citation statements)

References 12 publications

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“…The extreme heterosis at 29·5°C, which is very near to the limit of tolerance for D. melanogaster, has its parallel in observations on various fitness factors in several organisms, for example larval survival in D. melanogaster (Parsons 1959), relative viability and mating speed in D. pseudoobscura (Dobzhansky et al 1955;Parsons and Kaul 1966), and growth rates in Arabidopsis thaliana (Langridge 1962), and maize (McWilliam and Griffing 1965). In general it is perhaps true to say that the more severe the physical environment, the greater the level of heterosis developed.…”

Section: Discussionmentioning

confidence: 99%

The Genotypic Control of Longevity in Drosophila Melanogaster Under Two Environmental Regimes

Pa¹

1966

Aust. Jnl. Of Bio. Sci.

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SummaryLongevity in four inbred strains and their hybrids has been studied at two temperatures, 29·5 and 25°C. Heterosis was found at both temperatures but was more extreme at 29· 5°C, which is a very unfavourable environment for D. melanogaster. This observation has its parallel in observations on various fitness factors in several organisms. At 29· 5°C there was more variability of a genotypic nature between the hybrids than at 25°C, perhaps because the adaptation to this unfavourable environment depencls on rather special gene combinations. Thus longevity varies between genotypes, but the pattern of variation depends in an intimate way on the environment.

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Section: Discussionmentioning

confidence: 99%

The Genotypic Control of Longevity in Drosophila Melanogaster Under Two Environmental Regimes

Pa¹

1966

Aust. Jnl. Of Bio. Sci.

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“…Like Brown (1964), Parsons andKaul (1966), andSpiess et al (1966), we placed only one male and one female in a mating vial at the start of trials. Our trials differed from Brown's in two potentially important ways.…”

Section: Why Do Our Observations Differ From Brown's?mentioning

confidence: 99%

Mutual Interest Between the Sexes and Reproductive Success in Drosophila Pseudoobscura

2002

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Abstract. The pre-mating behavior of female Drosophila pseudoobscura has been considered passive and ''coy'' relative to more active, ''ardent,'' and indiscriminate male behavior. To test whether this long-held view-the ''received wisdom'' about mating behavior in Drosophila-is really true we carried out observations on how often D. pseudoobscura females approached males prior to courtship and copulation. By including only virgin females and males in the experiments, we eliminated the possibility that males are ''coy'' due to sperm limitation and females flexibly ''coy'' due to male manipulations that may affect the duration of remating inhibition. We observed the movements of females and males in vials during the first five minutes of exposure to one another. Video records revealed females went toward males as frequently as males toward females; we inferred that females were as interested in males as males in females. The total number of offspring emerging as adults correlated significantly with mutual, precourtship interest of both males and females in their vial-mates and latency to copulation. Thus, we hypothesize that females in nature approach males, perhaps actively soliciting male courtship simply by remaining close to them.

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“…Spiess and Langer (1961) demonstrated for the first time the association between mating propensity and chromosomal polymorphism in D. persimilis. The correlation between inversion polymorphism and mating activity has also been shown in D. pseudoobscura (Spiess and Langer, 1964b;Spiess etal., 1966;Kaul and Parsons, 1965;Parsons and Kaul, 1966), D. pavani (Brncic and KorefSantibanez, 1964), D. subobscura (Sperlich, 1966) and D. robusta (Prakash, 1968). The observed frequencies of different chromosomes in natural populations parallel their mating propensities in D. persimilis (Spiess and Langer, 1964a) and D. pseudoobscura (Spiess and Langer, 1964b).…”

Section: Introductionmentioning

confidence: 99%

Mating ability of homo- and heterokaryotypes of Drosophila ananassae from natural populations

Singh

Chatterjee

1986

Heredity

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Mating speed and duration of copulation in Drosophila pseudoobscura

Cited by 56 publications

References 12 publications

The Genotypic Control of Longevity in Drosophila Melanogaster Under Two Environmental Regimes

The Genotypic Control of Longevity in Drosophila Melanogaster Under Two Environmental Regimes

Mutual Interest Between the Sexes and Reproductive Success in Drosophila Pseudoobscura

Mating ability of homo- and heterokaryotypes of Drosophila ananassae from natural populations

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