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  • 1
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    Natural selection and the reinforcement of mate recognition (2000)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2000-10-20
    Description: Natural selection on mate recognition may often contribute to speciation, resulting in reproductive character displacement. Field populations of Drosophila serrata display reproductive character displacement in cuticular hydrocarbons when sympatric with Drosophila birchii. We exposed field sympatric and allopatric populations of D. serrata to experimental sympatry with D. birchii for nine generations. Cuticular hydrocarbons of field allopatric D. serrata populations evolved to resemble the field sympatric populations, whereas field sympatric D. serrata populations remained unchanged. Our experiment indicates that natural selection on mate recognition resulted in the field pattern of reproductive character displacement.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Higgie, M -- Chenoweth, S -- Blows, M W -- New York, N.Y. -- Science. 2000 Oct 20;290(5491):519-21.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Zoology and Entomology, University of Queensland, St. Lucia 4072, Australia. MHiggie@zoology.uq.edu.au〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11039933" target="_blank"〉PubMed〈/a〉
    Keywords: Analysis of Variance ; Animals ; Australia ; *Biological Evolution ; Discriminant Analysis ; Drosophila/chemistry/*genetics/*physiology ; *Ecosystem ; Female ; Genetic Variation ; Hydrocarbons/analysis ; Male ; Pheromones/analysis ; Reproduction ; *Selection, Genetic ; Sexual Behavior, Animal
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Phylogeography of the pipefish, Urocampus carinirostris , suggests secondary intergradation of ancient lineages (2002)
    Springer
    Details
    Publication Date: 2002-09-01
    Print ISSN: 0025-3162
    Electronic ISSN: 1432-1793
    Topics: Biology
    Published by Springer
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  • 3
    Electronic Resource
    Electronic Resource
    Genetic population structure of the catadromous Perciform: Macquaria novemaculeata (Percichthyidae) (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 50 (1997), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Genetic population structure in the catadromous Australian bass Macquaria novemaculeata was investigated using samples from four locations spanning 600 km along the eastern Australian coastline. Both allozymes and mtDNA control region sequences were examined. Population subdivision estimates based on allozymes revealed low levels of population structuring (Gst=0·043, P〈0·05). However, mtDNA indicated moderate levels of geographic population structure (Gst=0·146, P〈0·0l). Phylogenetic analysis of mtDNA control region sequences (mean sequence divergence 1·9%) indicated little phylogeographic structuring. Results suggested that genotypic variation within each river population, while being affected primarily by genetic drift, was also prevented from more significant divergence by homogenizing levels of gene flow—synonymous with a one-dimensional stepping-stone model of population structure. The catadromous life history of Macquaria novemaculeata was considered to be influential on the pattern of population structure displayed. Results were compared to the few population genetic studies involving catadromous fishes, indicating that catadromy alone is unlikely to be a good predictor of population structure. A more comprehensive suite of biological characteristics than simple life-history traits must be considered fully to allow reliable predictive models of population structure to be formulated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1997.tb01967.x
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  • 4
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    Variation and selection on preference functions: a comment on Edward (2015)
    Oxford University Press
    Details
    Publication Date: 2015-03-27
    Print ISSN: 1045-2249
    Electronic ISSN: 1465-7279
    Topics: Biology
    Published by Oxford University Press
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  • 5
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    Genetic variance in female condition predicts indirect genetic variance in male sexual display traits (2005)
    National Academy of Sciences
    Details
    Publication Date: 2005-04-19
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 6
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    The use of transcriptional profiles to predict adult mosquito age under field conditions (2006)
    National Academy of Sciences
    Details
    Publication Date: 2006-11-16
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 7
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    Allowing nature to be nurture: a comment on Bailey et al. (2018)
    Oxford University Press
    Details
    Publication Date: 2018-03-06
    Description: In their recent review, Bailey et al. (2017) make the compelling case that indirect genetic effects (IGEs) should be more widely incorporated into behavioral ecology research. IGEs occur whenever the trait of one individual is affected by the genotype of another “interacting” individual, usually via one or more “social cues.” IGEs create an additional source of heritable variation that can influence an individual’s trait expression above and beyond any direct contributions of its genotype (direct genetic effect [DGE]) and the environment ( Lynch and Walsh 1998 ). When conspecifics interact, as is the case for behavioral interactions, they make up part of an individual’s “social environment” and because these interacting partners are themselves genetically variable, additional heritable variation can be generated. So why does this matter? A key outcome of IGEs is that traits affected by them can evolve not only due to direct genetic variation but also due to evolution of the social environment itself ( Wolf et al. 1998 ).
    Print ISSN: 1045-2249
    Electronic ISSN: 1465-7279
    Topics: Biology
    Published by Oxford University Press
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  • 8
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    A Genomic Reference Panel for Drosophila serrata (2018)
    Genetics Society of America (GSA)
    Details
    Publication Date: 2018-03-29
    Description: Here we describe a collection of re-sequenced inbred lines of Drosophila serrata , sampled from a natural population situated deep within the species endemic distribution in Brisbane, Australia. D. serrata is a member of the speciose montium group whose members inhabit much of south east Asia and has been well studied for aspects of climatic adaptation, sexual selection, sexual dimorphism, and mate recognition. We sequenced 110 lines that were inbred via 17-20 generations of full-sib mating at an average coverage of 23.5x with paired-end Illumina reads. 15,228,692 biallelic SNPs passed quality control after being called using the Joint Genotyper for Inbred Lines (JGIL). Inbreeding was highly effective and the average levels of residual heterozygosity (0.86%) were well below theoretical expectations. As expected, linkage disequilibrium decayed rapidly, with r 2 dropping below 0.1 within 100 base pairs. With the exception of four closely related pairs of lines which may have been due to technical errors, there was no statistical support for population substructure. Consistent with other endemic populations of other Drosophila species, preliminary population genetic analyses revealed high nucleotide diversity and, on average, negative Tajima’s D values. A preliminary GWAS was performed on a cuticular hydrocarbon trait, 2-Me-C 28 revealing 4 SNPs passing Bonferroni significance residing in or near genes. One gene Cht9 may be involved in the transport of CHCs from the site of production (oenocytes) to the cuticle. Our panel will facilitate broader population genomic and quantitative genetic studies of this species and serve as an important complement to existing D. melanogaster panels that can be used to test for the conservation of genetic architectures across the Drosophila genus.
    Electronic ISSN: 2160-1836
    Topics: Biology
    Published by Genetics Society of America (GSA)
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  • 9
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    Interspecific Divergence of Transcription Networks along Lines of Genetic Variance in Drosophila: Dimensionality, Evolvability, and Constraint (2013)
    Oxford University Press
    Details
    Publication Date: 2013-05-10
    Description: Change in gene expression is a major facilitator of phenotypic evolution. Understanding the evolutionary potential of gene expression requires taking into account complex systems of regulatory networks, the structure of which could potentially bias evolutionary trajectories. We analyzed the evolutionary potential and divergence of multigene expression in three well-characterized signaling pathways in Drosophila , the mitogen-activated protein kinase (MapK), the Toll, and the insulin receptor/Foxo (InR/Foxo or InR/TOR) pathways in a multivariate quantitative genetic framework. Gene expression data from a natural population of D. melanogaster were used to estimate the genetic variance–covariance matrices (G) for each network. Although most genes within each pathway exhibited significant genetic variance, the number of independent dimensions of multivariate genetic variance was fewer than the number of genes analyzed. However, for expression, the reduction in dimensionality was not as large as seen for other trait types such as morphology. We then tested whether gene expression divergence between D. melanogaster and an additional six species of the Drosophila genus was biased along the major axes of standing variation observed in D. melanogaster . In many cases, divergence was restricted to directions of phenotypic space harboring above average levels of genetic variance in D. melanogaster , indicating that genetic covariances between genes within pathways have biased interspecific divergence. We tested whether co-expression of genes in both sexes has also biased the pattern of divergence. Including cross-sex genetic covariances increased the degree to which divergence was biased along major axes of genetic variance, suggesting that the co-expression of genes in males and females can generate further constraints on divergence across the Drosophila phylogeny. In contrast to patterns seen for morphological traits in vertebrates, transcriptional constraints do not appear to break down as divergence time between species increases, instead they persist over tens of millions of years of divergence.
    Print ISSN: 0737-4038
    Electronic ISSN: 1537-1719
    Topics: Biology
    Published by Oxford University Press
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  • 10
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    The Genomic Distribution of Sex-Biased Genes in Drosophila serrata: X Chromosome Demasculinization, Feminization, and Hyperexpression in Both Sexes (2013)
    Oxford University Press
    Details
    Publication Date: 2013-10-28
    Description: The chromosomal distribution of genes with sex-biased expression is often nonrandom, and in species with XY sex chromosome systems, it is common to observe a deficit of X-linked male-biased genes and an excess of X-linked female-biased genes. One explanation for this pattern is that sex-specific selection has shaped the gene content of the X. Alternatively, the deficit of male-biased and excess of female-biased genes could be an artifact of differences between the sexes in the global expression level of their X chromosome(s), perhaps brought about by a lack of dosage compensation in males and hyperexpression in females. In the montium fruit fly, Drosophila serrata , both these explanations can account for a deficit of male-biased and excess of female-biased X-linked genes. Using genome-wide expression data from multiple male and female tissues ( n = 176 hybridizations), we found that testis- and accessory gland-specific genes are underrepresented whereas female ovary-specific genes are overrepresented on the X chromosome, suggesting that X-linkage is disfavored for male function genes but favored for female function genes. However, genes with such sex-specific functions did not fully account for the deficit of male-biased and excess of female-biased X-linked genes. We did, however, observe sex differences in the global expression level of the X chromosome and autosomes. Surprisingly, and in contrast to other species where a lack of dosage compensation in males is responsible, we found that hyperexpression of X-linked genes in both sexes leads to this imbalance in D. serrata. Our results highlight how common genomic distributions of sex-biased genes, even among closely related species, may arise via quite different evolutionary processes.
    Electronic ISSN: 1759-6653
    Topics: Biology
    Published by Oxford University Press
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