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A different tempo of mitochondrial DNA evolution in birds and their parasitic lice

Page, R.D.M., Lee, P.L.M., Becher, S.A., Griffiths, R., and Clayton, D.H. (1998) A different tempo of mitochondrial DNA evolution in birds and their parasitic lice. Molecular Phylogenetics and Evolution, 9 (2). pp. 276-293. ISSN 1055-7903 (doi:10.1006/mpev.1997.0458)

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Publisher's URL: http://dx.doi.org/doi:10.1006/mpev.1997.0458

Abstract

A phylogeny for the Lice (Insecta: Phthiraptera: genus Dennyus) parasitic on swiftlets (Aves: Collocalliinae) was constructed based on mitochondrial cytochrome b DNA sequences. This phylogeny is congruent with previous phenetic analyses of morphometric data for the lice. Comparison with a previously obtained phylogeny for the hosts indicates some degree of cospeciation. These cospeciation events are used to compare relative rates of evolution in the birds and their lice for the same segment of the cytochrome b gene. Cytochrome b is evolving two to three times more rapidly in lice than in birds, and louse cytochrome b is highly divergent compared to that of most other insects. Although generation time has been suggested as an explanation for the disparity in evolutionary rates between Lice and their hosts, we suggest that the small effective population sizes of lice coupled with founder events occurring during transmission to new host individuals may be an important factor.

Item Type:Article
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Page, Prof Roderic
Authors: Page, R.D.M., Lee, P.L.M., Becher, S.A., Griffiths, R., and Clayton, D.H.
Subjects:Q Science > QL Zoology
Q Science > QH Natural history > QH426 Genetics
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
Journal Name:Molecular Phylogenetics and Evolution
ISSN:1055-7903

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
172691Molecular phylogenies and host parasite cospeciationRoderic PageNatural Environment Research Council (NERC)GR3/1A095RI BIODIVERSITY ANIMAL HEALTH & COMPMED