Increased genetic variance after a population bottleneck.

@article{Carson1990IncreasedGV,
  title={Increased genetic variance after a population bottleneck.},
  author={Hampton L. Carson},
  journal={Trends in ecology \& evolution},
  year={1990},
  volume={5 7},
  pages={
          228-30
        }
}
  • H. Carson
  • Published 1 July 1990
  • Biology
  • Trends in ecology & evolution
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149 Citations
Highly Influential Citations
6
Background Citations
73
Methods Citations
1

149 Citations

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The role of founder effects on the evolution of reproductive isolation

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Immigration and the ephemerality of a natural population bottleneck: evidence from molecular markers

Results show that immigration at levels that are hard to measure in most field studies can lead to qualitatively very different genetic outcomes from those expected from mutations only, and suggest that future theoretical and empirical work on bottlenecks and metapopulations should address the impact of immigration.

The conversion of variance and the evolutionary potential of restricted recombination

The goal is to emphasize the common theme of increased short-term access to additive genetic variance in all of these situations and to motivate research directed towards a more complete characterization of the relevance of the conversion of variance to the evolutionary process.

Population Declines and Genetic Variation: Effects of Serial Bottlenecks

A combination of a laboratory model experiment and population genetics study of an in situ bottleneck in an endangered species to investigate how quantitative and molecular genetic variation are affected during bottlenecks, and found that phenotypic and additive variance for a quantitative trait were larger following a bottleneck occurring in the novel environment.

Mating System Plasticity Promotes Persistence and Adaptation of Colonizing Populations of Hermaphroditic Angiosperms

It is found that a plastic shift to a mixed mating system generally promotes niche evolution by decreasing the risk of extinction, providing isolation from maladaptive gene flow, and temporarily increasing genetic variance in the trait under selection, whereas obligate self-fertilization reduces adaptive potential.

The population genetic consequences of habitat fragmentation for plants.

Effects of bottlenecks on quantitative genetic variation in the butterfly Bicyclus anynana.

The effects of a single population bottleneck of differing severity on heritability and additive genetic variance was investigated experimentally using a butterfly, finding that the response to inbreeding of the morphological traits studied showed no significant departure from the neutral additive model.

Genetic characteristics of introduced birds and mammals

Evidence is lacking for inbreeding depression occurring in introduced populations of birds and mammals in the wild, and some conclusions are drawn concerning management strategies for wildlife introductions with respect to genetic considerations.

Bottleneck effects on genetic variance for courtship repertoire.

Nonadditive genetic effects on mating behavior may be important in structuring genetic variance for courtship, although most of the increases in genetic variance would be expected to reflect inbreeding depression with relatively rare situations representing the facilitation of speciation by bottlenecks.
...

References

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In a population of constant size the expected heterozygosity for a neutral locus when mutation and genetic drift are balanced is given by 4 Nv/(4Nv + 1) under the assumption that new mutations are…

Population crash, population flush and genetic variability in cage populations of Drosophila melanogaster

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EFFECT OF AN EXPERIMENTAL BOTTLENECK ON MORPHOLOGICAL INTEGRATION IN THE HOUSEFLY

The alteration of the genetic relationships among traits as a result of a bottleneck suggests that nonadditive components of genetic variation affecting these traits were present in the control line.

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  • Biology
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The model presented here demonstrates that some of the additive‐by‐additive epistatic genetic variance is converted to additive genetic variance following a founder event.

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