Maintenance of Chromosomal Polymorphism in a Population of Drosophila pseudoobscura. II. Fecundity, Longevity, Viability and Competitive Fitness

Nickerson, Richard P.; Druger, Marvin

doi:10.2307/2407126

Cited by 5 publications

(6 citation statements)

References 5 publications

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“…As an alternative approach to test the relationship between polyandry and chromosome inversions, we investigated the broad scale interaction between polyandry and either the presence or absence of heterokaryotypes. Previous work has compared the relative fitness of polymorphic against monomorphic populations (Nickerson and Druger 1973), and heterozygote superiority (heterosis) has been reported on several occasions (e.g., Beardmore et al 1960;Dobzhansky and Pavlovsky 1961;Pavlovsky and Dobzhansky 1966). Singh and Chatterjee (1988) also observed that inversion heterozygotes of D. ananassae males exhibited heterosis, as they had a higher mating propensity when compared to males with homozygote inversions.…”

Section: Discussionmentioning

confidence: 99%

“…However, the variation in homo-and heterokaryotypes among the populations is interesting and warrants further explanation as to what may be responsible for the maintenance of chromosomal polymorphism in a population. Superiority of inversion heterozygotes over the corresponding homozygotes is believed to be a crucial mechanism for preserving the gene arrangement polymorphism in D. pseudoobscura populations (Nickerson and Druger 1973). Nickerson and Druger (1973) evaluated heteroand homokaryotypes relative to their respective fecundity, longevity as well as egg-to-adult viability and found heterozygote superiority for fecundity and longevity, but not for viability.…”

Section: Discussionmentioning

confidence: 99%

“…Superiority of inversion heterozygotes over the corresponding homozygotes is believed to be a crucial mechanism for preserving the gene arrangement polymorphism in D. pseudoobscura populations (Nickerson and Druger 1973). Nickerson and Druger (1973) evaluated heteroand homokaryotypes relative to their respective fecundity, longevity as well as egg-to-adult viability and found heterozygote superiority for fecundity and longevity, but not for viability. The adaptive values of the karyotypes may also be dependent upon their relative frequencies (i.e., frequency-dependent selection) as well as the presence of certain other karyotypes within the same environment (Levene et al 1954(Levene et al , 1958.…”

Section: Discussionmentioning

confidence: 99%

“…Alleles or genes controlling polyandry might be associated with one or more variants of this third chromosome inversion in D. pseudoobscura. However, inversion heterozygotes are very common in natural D. pseudoobscura populations and have often been demonstrated to show a fitness advantage relative to homokaryotypes (e.g., Dobzhansky 1951;Spiess 1962; but see Nickerson and Druger 1973). Several hypotheses suggest that polyandry in general should be commoner in females where the costs of remating are lower.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Can patterns of chromosome inversions in Drosophila pseudoobscura predict polyandry across a geographical cline?

Herrera

Taylor

Skeats

et al. 2014

Ecology and Evolution

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Female multiple mating, known as polyandry, is ubiquitous and occurs in a wide variety of taxa. Polyandry varies greatly from species in which females mate with one or two males in their lifetime to species in which females may mate with several different males on the same day. As multiple mating by females is associated with costs, numerous hypotheses attempt to explain this phenomenon. One hypothesis not extensively explored is the possibility that polyandrous behavior is captured and “fixed” in populations via genetic processes that preserve the behavior independently of any adaptive benefit of polyandry. Here, we use female isolines derived from populations of Drosophila pseudoobscura from three locations in North America to examine whether different female remating levels are associated with patterns of chromosome inversions, which may explain patterns of polyandry across the geographic range. Populations differed with respect to the frequency of polyandry and the presence of inversion polymorphisms on the third chromosome. The population with the lowest level of female remating was the only one that was entirely comprised of homokaryotypic lines, but the small number of populations prevented us investigating this relationship further at a population level. However, we found no strong relationship between female remating levels and specific karyotypes of the various isolines.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Can patterns of chromosome inversions in Drosophila pseudoobscura predict polyandry across a geographical cline?

Herrera

Taylor

Skeats

et al. 2014

Ecology and Evolution

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show abstract

“…Even the lethal heterozygotes, when in combination with a polymorphic inversion In(2L)t, did not show any reduction in female productivity. The maintenance of chromosomal polymorphism in nature has been extensively studied in D. pseudoobscura (Dobzhansky, 1970), and the superiority of heterozygotes in egg production was shown by Nickerson and Druger (1973). The drastic increase in the effective population size in Katsunuma as estimated above also may be a factor responsible for changes in the population structure and hence causing the disappearance of inversions.…”

Section: Discussionmentioning

confidence: 98%

Further genetic studies on the Katsunuma population of Drosophila melanogaster.

Hatano¹,

Inoue

Watada

et al. 1999

Genes Genet. Syst.

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Changes in the genetic structure of the Katsunuma natural population of Drosophila melanogaster have been examined during the past 35 years. The frequency of recessive lethal genes on the second chromosome once increased from 15% to 30% in the early 1970s, then decreased to about 24% in the late 1970s, and thereafter showed no significant changes. Sterility genes, the frequency of which is always less than the lethals, showed a similar tendency. The SD (segregation distorter) mutant gene disappeared but some others such as rbl (reduced bristle) and bw (brown) persisted in the population. The frequency of inversion-carrying chromosomes gradually decreased in the period, such that the standard chromosome frequency in the second and third chromosomes increased from about 40% to more than 80%. Coincident with these frequency changes is the invasion of a transposable element P into the Katsunuma population. The P element should have invaded into Katsunuma in the late 1960s. It spread over the population apparently inducing deleterious mutations, causing the decrease in the allelism rate, and hence increasing the effective population size. Soon, however, most flies became resistant to the P element-mediated transposition as they began to harbor defective P elements. During the course of spreading, the P element must also have induced deleterious mutations on the polymorphic inversions, breaking up the heterotic gene complexes along the chromosomes, which probably caused the reduction in the frequency of inversion chromosomes. Temporal invasion of D. simulans, a sibling species of D. melanogaster, into Katsunuma occurred several times after 1978, and the species seems to have been settled since 1990. This, however, did not have any effect on the genetic structure of D. melanogaster population.

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Bibliography: longevity, ageing and parental age effects in Drosophila (1907–86)

Soliman¹,

Lints²,

Lints³

et al. 1988

Drosophila as a Model Organism for Ageing Studies

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Maintenance of Chromosomal Polymorphism in a Population of Drosophila pseudoobscura. II. Fecundity, Longevity, Viability and Competitive Fitness

Cited by 5 publications

References 5 publications

Can patterns of chromosome inversions in Drosophila pseudoobscura predict polyandry across a geographical cline?

Can patterns of chromosome inversions in Drosophila pseudoobscura predict polyandry across a geographical cline?

Further genetic studies on the Katsunuma population of Drosophila melanogaster.

Bibliography: longevity, ageing and parental age effects in Drosophila (1907–86)

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