The Evolution of Ovoviviparity in a Temporally Varying Environment

  title={The Evolution of Ovoviviparity in a Temporally Varying Environment},
  author={Laurence D Mueller and Kathreen Bitner},
  journal={The American Naturalist},
  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… 
2000 Evolution of population stability
It is found that selection for rapid development reduces female fecundity as a correlated trait and this evolution also produces more stable population dynamics, and with the appropriate trade-offs the evolution of enhanced stability is possible.
The genetics of egg retention and fertilization success in Drosophila: One step closer to understanding the transition from facultative to obligate viviparity
A novel microscope‐based method is developed for measuring egg retention in Drosophila females and the genetic basis of egg retention is inferred using a genome‐wide association study (GWAS), and it is proposed that the loss of fecundity incurred by viviparity could be offset by benefits arising from enhanced mate discrimination, resource specialization, or modified egg morphology.


A Genetic Polymorphism Maintained by Natural Selection in a Temporally Varying Environment
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.
Egg size, embryonic development time and ovoviviparity in Drosophila species
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.
Evolution of a lesser fitness trait: egg production in the specialist Drosophila sechellia.
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.
The genetics of adaptation in Drosophila sechellia
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.
Species-Wide Genetic Variation and Demographic History of Drosophila sechellia, a Species Lacking Population Structure
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.
Genetics of egg production in Drosophila sechellia
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.
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.
Dopamine drives Drosophila sechellia adaptation to its toxic host
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.
A Locus in Drosophila sechellia Affecting Tolerance of a Host Plant Toxin
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.
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
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.