Interspecific Competition between Drosophila melanogaster and Drosophila                simulans: Effects of Adult Density, Species Frequency, Light, and Dietary                Phosphorus-32 on Fecundity

Moth, Jeffrey J.; Barker, J. S. F.

doi:10.1086/physzool.54.1.30155802

Cited by 5 publications

(3 citation statements)

References 22 publications

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“…Narise (1965) first reported a frequency dependence in the competition dynamics between D. melanogaster and D. simulans. Although his results were disputed by Putwain et al (1967), subsequent studies have clearly demonstrated a frequency dependence caused by asymmetric reproductive interference between the two species (e.g., Moth and Barker 1981). The fecundity and longevity of D. simulans females decreases as the relative frequency of D. melanogaster to D. simulans increases, but the fecundity of D. melanogaster does not change (Moth 1974;Moth and Barker 1977).…”

Section: Drosophilamentioning

confidence: 96%

Reproductive interference in laboratory experiments of interspecific competition

Kishi

2014

Population Ecology

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Many studies that have researched interspecific competition in Callosobruchus (bean beetles), Drosophila (fruit flies), and Tribolium (flour beetles) have considered the major drivers of interspecific competition to be interspecific resource competition and intraguild cannibalism. These competition drivers have a density‐dependent effect on the population dynamics. However, some studies have also detected a relative‐frequency‐dependent effect in the observed population dynamics. The most likely causal mechanism of this relative frequency dependence is reproductive interference, defined as any interspecific sexual interaction that damages female reproductive success. Reproductive interference has been overlooked by most laboratory studies in spite of the critical effect on the competition outcome. In this paper, I review laboratory studies of these insect genera from the perspective of reproductive interference and show that the reported results can be more reasonably interpreted by the joint action of reproductive interference and resource competition, including intraguild cannibalism. In addition, on the basis of results reported by a small number of related studies, I discuss the behavioral and evolutionary changes induced in those genera by reproductive interference.

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Section: Drosophilamentioning

confidence: 96%

Reproductive interference in laboratory experiments of interspecific competition

Kishi

2014

Population Ecology

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“…The suspension method is based on that of Moth and Barker 6 and has similarities to Ralchev 7 . Approximately 500 reproductively active flies are put into two 500 mL plastic bottles with 25 mL of a 2.5% agar medium and a pile of 1:1 yeast/water paste in the middle, and left there for approximately 15 h at 25°C.…”

Section: Methodsmentioning

confidence: 99%

“…Thus eggs picked from one container will not be a random sample of the line as a whole, and will not be a random sample of the small ‘container-line’ if eggs are picked from a small area within the container. Here, I describe another procedure of egg picking, based on Moth and Barker, 6 which ensures the collection of random samples of eggs from the line at hand. This method will be referred to as the suspension method, and will be compared with the traditional method by looking at the standard deviation of the egg-to-adult viability in a high number of lines.…”

Section: Introductionmentioning

confidence: 99%

Fast egg collection method greatly improves randomness of egg sampling inDrosophila melanogaster

Schou

2013

Fly

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When obtaining samples for population genetic studies, it is essential that the sampling is random. For Drosophila, one of the crucial steps in sampling experimental flies is the collection of eggs. Here an egg collection method is presented, which randomizes the eggs in a water column and diminishes environmental variance. This method was compared with a traditional egg collection method where eggs are collected directly from the medium. Within each method the observed and expected standard deviations of egg-to-adult viability were compared, whereby the difference in the randomness of the samples between the two methods was assessed. The method presented here was superior to the traditional method. Only 14% of the samples had a standard deviation higher than expected, as compared with 58% in the traditional method. To reduce bias in the estimation of the variance and the mean of a trait and to obtain a representative collection of genotypes, the method presented here is strongly recommended when collecting eggs from Drosophila.

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Stuart Barker’s Contributions to Population Genetics and Animal Breeding: Exploring Fitness, Evolution and Animal Genetics

Nicholas

Hammond²

2009

Adaptation and Fitness in Animal Populations

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Interspecific Competition between Drosophila melanogaster and Drosophila simulans: Effects of Adult Density, Species Frequency, Light, and Dietary Phosphorus-32 on Fecundity

Cited by 5 publications

References 22 publications

Reproductive interference in laboratory experiments of interspecific competition

Reproductive interference in laboratory experiments of interspecific competition

Fast egg collection method greatly improves randomness of egg sampling inDrosophila melanogaster

Stuart Barker’s Contributions to Population Genetics and Animal Breeding: Exploring Fitness, Evolution and Animal Genetics

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