The population genetics of host specificity: genetic differentiation in dove lice (Insecta: Phthiraptera)

Molecular Ecology
Kevin P JohnsonDale H Clayton

Abstract

Some species of parasites occur on a wide range of hosts while others are restricted to one or a few host species. The host specificity of a parasite species is determined, in part, by its ability to disperse between host species. Dispersal limitations can be studied by exploring the genetic structure of parasite populations both within a single species of host and across multiple host species. In this study we examined the genetic structure in the mitochondrial cytochrome oxidase I (COI) gene of two genera of lice (Insecta: Phthiraptera) occurring on multiple sympatric species of doves in southern North and Central America. One genus, Columbicola, is generally less host-specific than the other, Physconelloides. For both genera we identified substantial genetic differentiation between populations of conspecific lice on different host species, generally 10-20% sequence divergence. This level of divergence is in the range of that often observed between species of these two genera. We used nested clade analysis to explore fine scale genetic structure within species of these feather lice. We found that species of Physconelloides exhibited more genetic structure, both among hosts and among geographical localities, than did species o...Continue Reading

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Citations

Aug 29, 2013·Parasitology Research·Kamila Wawrocka, Tomáš Bartonička
Mar 12, 2004·Molecular Phylogenetics and Evolution·Roderic D M PageVincent S Smith
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May 25, 2011·Proceedings of the National Academy of Sciences of the United States of America·Christopher W Harbison, Dale H Clayton
Dec 16, 2003·Proceedings of the National Academy of Sciences of the United States of America·Dale H ClaytonKevin P Johnson
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