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Data from: Limits to environmental masking of genetic quality in sexual signals
- 负责人：
- DOI：
- doi:10.5061/dryad.6p150kf
- 摘要：
- There is considerable debate over the value of male sexual ornaments as signals of genetic quality. Studies alternately report that environmental variation enhances or diminishes the genetic signal, or leads to crossover where genotypes perform well in one environment but poorly in another. A unified understanding is lacking. We conduct a novel experimental test examining the dual effects of distinct categories of genetic (inbred versus crossed parental lines) and environmental quality (low, through high to extreme larval food stress) on a condition-dependent male ornament. We find that differences in genetic quality signalled by the ornament (male eyespan in Diasemopsis meigenii stalk-eyed flies) become visible and are amplified under high stress but are overwhelmed in extreme stress environments. Variance among independent genetic lines increases with environmental stress in both genetic quality classes, but at a slower rate in high quality outcrossed flies. Individual genetic lines generally maintain their ranks across environments, except among high quality lines under low environmental stress, where low genetic variance among lines precludes differentiation between ranks. Our results provide a conceptual advance, demonstrating a unified pattern for how genetic and environmental quality interact. They show when environmental conditions lead to the amplification of differences in signals of genetic quality and thereby enhance the potential indirect genetic benefits gained by female mate choice.
Data from: Relative costs and benefits of alternative reproductive phenotypes at different temperatures - genotype-by-environment interactions in a sexually selected trait
- 负责人：
- DOI：
- doi:10.5061/dryad.636d487
- 摘要：
- to act on these traits. A possible explanation is the existence of a genotype-by-environment (GxE) interaction for fitness, by which elaborate SSTs ar
Data from: Genetics of incipient speciation in Drosophila mojavensis. III. Life history divergence in allopatry and reproductive isolation
- 负责人：
- DOI：
- doi:10.5061/dryad.1775
- 摘要：
- . Eight GxE interactions were also detected, caused by longer development times associated with mainland alleles reared a mainland host with sma
Data from: Genetic variation in the developmental regulation of cortical avpr1a among prairie voles
- 负责人：
- Okhovat, Mariam
- 关键词：
- retrosplenial cortex vasopressin receptor 1a V1aR phenotypic plasticity gene x environment interaction DNA methylation polymorphic CpG zebularine differentially methylated region (DMR)
- DOI：
- doi:10.5061/dryad.c5961
- 摘要：
- In principle, polymorphic CpGs (polyCpGs) may contribute to gene-by-environment interactions (GxE) by altering DNA methylation. In this study, we investigate
Data from: Context-dependent effects of Y chromosome and mitochondrial haplotype on male locomotive activity in Drosophila melanogaster
- 负责人：
- DOI：
- doi:10.5061/dryad.q86q0
- 摘要：
- Some regions of the genome exhibit sexual asymmetries in inheritance, and are thus subjected to sex-biased evolutionary forces. Maternal inheritance of mitochondrial DNA (mtDNA) enables mtDNA mutations harmful to males, but not females, to accumulate. In the face of male-harmful mtDNA mutation accumulation, selection will favour the evolution of compensatory modifiers in the nuclear genome that offset fitness losses to males. The Y chromosome is a candidate to host these modifiers, because it is paternally-inherited, known to harbour an abundance of genetic variation for male fertility, and therefore likely to be under strong selection to uphold male viability. Here, we test for inter-genomic interactions involving mtDNA and Y chromosomes in male Drosophila melanogaster. Specifically, we examine effects of each of these genomic regions, and their interaction, on locomotive activity, across different environmental contexts – both dietary and social. We found that both the mtDNA haplotype and Y chromosome haplotype affected activity in males assayed in an environment perceived as social. These effects, however, were not evident in males assayed in perceived solitary environments, and neither social nor solitary treatments revealed evidence for inter-genomic interactions. Finally, the magnitude and direction of these genetic effects was further contingent on the diet treatment of the males. Thus, genes within the mtDNA and Y chromosome are involved in genotype-by-environment interactions. These interactions might contribute to the maintenance of genetic variation within these asymmetrically-inherited gene regions and complicate the dynamics of genetic interactions between the mtDNA and the Y chromosome.
