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| http://dx.doi.org/10.1073/pnas.45.3.419 | DOI Listing |
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Multiple introgressions shape mitochondrial evolutionary history in Drosophila paulistorum and the Drosophila willistoni group.
Mol Phylogenet Evol
March 2023
Molecular Evolution, Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Husargatan 3, 751 24 Uppsala, Sweden. Electronic address:
Hybridization and the consequent introgression of genomic elements is an important source of genetic diversity for biological lineages. This is particularly evident in young clades in which hybrid incompatibilities are still incomplete and mixing between species is more likely to occur. Drosophila paulistorum, a representative of the Neotropical Drosophila willistoni subgroup, is a classic model of incipient speciation.
View Article and Find Full Text PDFThe effect of Wolbachia on gene expression in Drosophila paulistorum and its implications for symbiont-induced host speciation.
BMC Genomics
June 2019
Molecular evolution, Department of Cell and Molecular Biology, Uppsala University, Husargatan 3, 751 24, Uppsala, Sweden.
Background: The Neotropical fruit fly Drosophila paulistorum (Diptera: Drosophilidae) is a species complex in statu nascendi comprising six reproductively isolated semispecies, each harboring mutualistic Wolbachia strains. Although wild type flies of each semispecies are isolated from the others by both pre- and postmating incompatibilities, mating between semispecies and successful offspring development can be achieved once flies are treated with antibiotics to reduce Wolbachia titer. Here we use RNA-seq to study the impact of Wolbachia on D.
View Article and Find Full Text PDFSymbiont-Driven Male Mating Success in the Neotropical Drosophila paulistorum Superspecies.
Behav Genet
January 2019
Department of Cell and Developmental Biology, Center of Anatomy and Cell Biology, Medical University of Vienna, Schwarzspanierstrasse 17, 1090, Vienna, Austria.
Microbial symbionts are ubiquitous associates of living organisms but their role in mediating reproductive isolation (RI) remains controversial. We addressed this knowledge gap by employing the Drosophila paulistorum-Wolbachia model system. Semispecies in the D.
View Article and Find Full Text PDFDobzhansky's concept of genetic coadaptation: Drosophila ananassae is an exception to this concept.
J Genet
September 2018
Genetics Laboratory, Department of Zoology, Institute of Science, Banaras Hindu University, Varanasi 221 005, India.
Dobzhansky was the first to show that the inversion polymorphism in is subject to natural selection and is a device to cope with the diversity of environments. His extensive work on has revealed interesting phenomena of population genetics. In continuation of his work on this species, he constructed a number of homozygous lines for different gene arrangements in the third chromosome, and while employing these lines in intrapopulation and interpopulation crosses, he quantified the fitness of inversion homokaryotypes and heterokaryotypes.
View Article and Find Full Text PDFCombining morphology and molecular data to improve Drosophila paulistorum (Diptera, Drosophilidae) taxonomic status.
Fly (Austin)
January 2019
a Departamento de Zoologia, Programa de Pós-Graduação em Biologia Animal (PPGBAN) , Instituto de Biociências, Universidade Federal do Rio Grande do Sul (UFRGS) , Porto Alegre , RS , Brazil.
The willistoni species subgroup has been the subject of several studies since the latter half of the past century and is considered a Neotropical model for evolutionary studies, given the many levels of reproductive isolation and different evolutionary stages occurring within them. Here we present for the first time a phylogenetic reconstruction combining morphological characters and molecular data obtained from 8 gene fragments (COI, COII, Cytb, Adh, Ddc, Hb, kl-3 and per). Some relationships were incongruent when comparing morphological and molecular data.
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