@article {782506,
	title = {Unequal transmission of mitochondrial haplotypes in natural populations of field mice with XY females (genus <em>Akodon</em>)},
	journal = {The American Naturalist},
	volume = {161},
	year = {2003},
	pages = {29-39},
	abstract = {<p class="p1">In species with fertile XY females, such as South American\&nbsp;field mice (genus Akodon), there are two types of mitochondrial\&nbsp;DNA (mtDNA), one passing from XX females and one from XY\&nbsp;females. The XX mothers pass their mtDNA to their XX daughters.\&nbsp;The XY mothers, however, produce both XX and XY daughters.\&nbsp;Because of this breeding scheme, the XY mtDNA remains isolated\&nbsp;whereas the XX lineage is continuously invaded by XY mtDNA haplotypes.\&nbsp;Using a set of recursion equations, I predicted that XY\&nbsp;mtDNA haplotypes should rapidly spread through entire populations\&nbsp;composed of both XX and XY females. I examined patterns of nucleotide\&nbsp;polymorphism and divergence from the mtDNA control\&nbsp;region as well as phylogenetic patterns for evidence of an mtDNA\&nbsp;sweep. I compared patterns in two sister species, Akodon boliviensis\&nbsp;and Akodon azarae, that are composed of 35\% and 10\% XY females,\&nbsp;respectively. Akodon boliviensis XY females are found in all clades of\&nbsp;a phylogenetic mtDNA tree consistent with the spread of mtDNA\&nbsp;haplotypes. In addition, A. azarae mtDNA haplotypes showed no\&nbsp;deviations from neutrality. These results, in combination with high\&nbsp;levels of mtDNA nucleotide diversity in XY females, suggest an ancient\&nbsp;origin (1104 generations) of XY females in both A. boliviensis\&nbsp;and A. azarae.</p>},
	author = {Hoekstra, HE}
}
