ABSTRACT: Constitutive gene expression differs in three brain regions important for cognition in neophobic and non-neophobic house sparrows (Passer domesticus)
Project description:We investigated seminal fluid (SF) diversification in a recently diverged passerine species pair (Passer domesticus and P. hispaniolensis) using a combination of proteomic and comparative evolutionary genomic approaches. Specifically, using tandem MS/MS semi-quantitative proteomic methods we identified and compared the SF proteome of two species of Passer sparrows - the house and Spanish sparrow. This analysis revealed consistencies with known aspects of SF protein biology and function in other taxa, including the presence of a diversity of immune and antimicrobial proteins
2019-11-06 | PXD013748 | Pride
Project description:Captivity and neophobia phenotype influences on cloacal microbiome of house sparrows (Passer domesticus)
Project description:We report on a genome-wide scan for introgression in the house mouse (Mus musculus domesticus) involving the Algerian mouse (Mus spretus), using 20 samples from the ranges of sympatry and allopatry. Our analysis reveals significant variability in introgression signatures along the genomes, as well as across the samples. We find that fewer than half of the chromosomes in each genome harbor all detectable introgression. Further, a surprising result is that European mice carry more M. spretus alleles than the sympatric African ones. Using the length distribution and sharing patterns of introgressed genomic tracts across the samples, we propose three hypotheses. First, at least three distinct hybridization events involving M. spretus have occurred, one of which is ancient, and the other two are recent. Second, several of the inferred introgressed tracts contain genes that are likely to confer adaptive advantage. Third, introgressed tracts might contain driver genes that determine the evolutionary fate of those tracts. Further, our analysis revealed introgressed genes of functional importance, including the Vkorc1 gene, which is implicated in rodenticide resistance, and olfactory receptor genes. Our findings highlight the extent and role of introgression in nature, and call for careful analysis and interpretation of house mouse data in evolutionary and genetic studies. Six wild M. m. domesticus samples were genotyped using the Affymetrix Mouse Diversity Genotyping Array.
