The Evolution of Ovoviviparity in a Temporally Varying Environment

@article{Mueller2015TheEO,
  title={The Evolution of Ovoviviparity in a Temporally Varying Environment},
  author={Laurence D Mueller and Kathreen Bitner},
  journal={The American Naturalist},
  year={2015},
  volume={186},
  pages={708 - 715}
}
Environments that vary within a generation of an organism provide opportunities for adaptation if the level of variation is severe and predictable. We describe a model of evolution in such environments with genotypes that show trade-offs in viability and fecundity. One genotype develops rapidly and has superior viability but reduced fertility relative to the alternative genotype. Conditions that allow the evolution of the rapidly developing genotypes are explored. We show how the evolution of… Expand
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References

SHOWING 1-10 OF 35 REFERENCES
A Genetic Polymorphism Maintained by Natural Selection in a Temporally Varying Environment
TLDR
It is shown that natural selection in environments that are crowded with larvae of the fruit fly can maintain a genetic polymorphism with one group of genotypes specializing on the early part of the environment and a second group specialize on the late part. Expand
Egg size, embryonic development time and ovoviviparity in Drosophila species
TLDR
Lengths, widths and volumes of eggs from 11 species of Drosophila whose genomes have been fully sequenced exhibit significant variation that is not explained by their phylogenetic relationships, suggesting that female control over oviposition in these species differs from what is observed in D. melanogaster. Expand
Evolution of a lesser fitness trait: egg production in the specialist Drosophila sechellia.
TLDR
Comparisons of species and interspecific crosses showed that two different traits were modified: number of ovarioles and rate of egg production, and it is assumed that D. sechellia progressively adapted itself from rotten, non-toxic morinda to a fresher and more toxic resource. Expand
The genetics of adaptation in Drosophila sechellia
TLDR
The data from D.sechellia suggest that adaptations are not as genetically complex as historically thought, although almost all of the adaptations of D. sechellia involve several genes. Expand
Species-Wide Genetic Variation and Demographic History of Drosophila sechellia, a Species Lacking Population Structure
TLDR
While bottlenecks cannot account for the pattern of molecular evolution observed in this species, scenarios close to the null hypothesis of a constant population size are well supported and adaptive features specific to D. sechellia are discussed. Expand
Genetics of egg production in Drosophila sechellia
TLDR
The data are consistent with the hypothesis that decline in egg production is, in part, a negative pleiotropic effect of genetic changes required for host specialization in D. sechellia, although finer-scale genetic analysis of both traits is needed to truly test this hypothesis. Expand
PUPARIATION SITE PREFERENCE WITHIN AND BETWEEN DROSOPHILA SIBLING SPECIES
TLDR
The genetic basis for the evolved preference in puariation site preference is explored by performing quantitative trait locus mapping within and between species and it is found that the interspecific difference is controlled largely by loci on chromosomes X and II. Expand
Dopamine drives Drosophila sechellia adaptation to its toxic host
TLDR
It is argued that the need of l-DOPA for successful reproduction has driven D. sechellia to become an M. citrifolia obligate specialist, illustrating how an insect's dopaminergic system can sustain ecological adaptations by modulating ontogenesis and development. Expand
A Locus in Drosophila sechellia Affecting Tolerance of a Host Plant Toxin
TLDR
M measuring the effect of this tolerance locus on host preference behavior was inconsistent with the linkage hypothesis, as flies bearing this tolerance region showed no increase in preference for media containing M. citrifolia toxins, which D. sechellia prefers. Expand
Host-plant specialization in the Drosophila melanogaster species complex: a physiological, behavioral, and genetical analysis.
  • S. R'kha, P. Capy, J. David
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 1991
TLDR
Differences between the species explain why they do not hybridize in nature although living in sympatry: three or four different genes, or groups of genes, differentiate the ecological niches of the two species. Expand
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3
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...