Biased introgression of mitochondrial and nuclear genes: a comparison of diploid and haplodiploid systems

• DOI: 10.1111/mec.13318
• Publication Date: 2015-07-15T05:37:02Z
• Authors: Manus M. Patten; Sara A. Carioscia; Catherine R. Linnen
• Keywords: Introgression; Haplodiploidy; Nuclear gene; Reproductive isolation

Hybridization between recently diverged species, even if infrequent, can lead to the introgression of genes from one species into another. The rates mitochondrial and nuclear often differ, with some taxa showing biases for others introgression. Several hypotheses exist explain such biases, including adaptive introgression, sex differences in dispersal rates, sex-specific prezygotic isolation fitness hybrids (e.g. Haldane's rule). We derive a simple population genetic model that permits an analysis demographic parameters measures relative hybridizing pairs. do this separately diploid haplodiploid species. For taxa, we recover results consistent previous hypotheses: excess among migrants or causes bias type marker other; when rule is obeyed, find XY systems ZW systems. reveals owing their unique transmission genetics, they are seemingly assured strong unlike where male female tip either direction. This heretofore overlooked aspect hybridization haplodiploids provides what perhaps most likely explanation differential markers raises concerns about use DNA barcodes delimitation these taxa.