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Genetic Analysis of Lice Supports Direct Contact between Modern and Archaic Humans
It is shown that modern human head lice, Pediculus humanus, are composed of two ancient lineages, whose origin predates modern Homo sapiens by an order of magnitude (ca. 1.18 million years).
Species Coextinctions and the Biodiversity Crisis
- L. P. Koh, R. Dunn, N. Sodhi, Robert K. Colwell, H. Proctor, V. Smith
- Environmental Science, BiologyScience
- 10 September 2004
This model examines the relationship between coextinction levels (proportion of species extinct) of affiliates and their hosts across a wide range of coevolved interspecific systems and estimates that 6300 affiliate species are “coendangered” with host species currently listed as endangered.
Phylogenetic analysis of partial sequences of elongation factor 1alpha identifies major groups of lice (Insecta: Phthiraptera).
- R. Cruickshank, K. Johnson, V. Smith, R. Adams, D. Clayton, R. Page
- BiologyMolecular Phylogenetics and Evolution
- 1 May 2001
Evidence is provided in support of the hypothesis that lice have speciated in situ on the host in response to niche specialization and that this has given rise to convergent morphologies in the lice of different host groups which share similar ecological niches.
Avian louse phylogeny (Phthiraptera: Ischnocera): a cladistic study based on morphology
- V. Smith
- 1 May 2001
Comparison with host taxonomy reveals a series of complex host-parasite associations that do not support a hypothesis of strict one to one cospeciation, and the role of niche specialization to explain the presence of multiple unrelated lineages on the same host taxon is considered.
Dramatically elevated rate of mitochondrial substitution in lice (Insecta: Phthiraptera).
A hitchhikers guide to the Galápagos: co-phylogeography of Galápagos mockingbirds and their parasites
It is shown that pooling genetic data from organisms living in close ecological association reveals a more accurate phylogeographic history for these taxa, with instances of incongruence mostly explained by ancestral genetic polymorphism.
Basal ischnoceran louse phylogeny (Phthiraptera: Ischnocera: Goniodidae and Heptapsogasteridae)
- V. Smith
- 1 January 2000
Mapping host taxonomy on to the phylogeny of the lice reveals a consistent pattern which is largely congruent down to the rank of host family, although at lower taxonomic levels the association appears to be more complex.
Multiple origins of parasitism in lice
- K. Johnson, K. Yoshizawa, V. Smith
- BiologyProceedings of the Royal Society of London…
- 7 September 2004
It is inferred that parasitism of vertebrates arose twice independently within Psocodea,once in the common ancestor of Amblycera and once in theCommon ancestor of all other parasitic lice.
Evolutionary history of mammalian sucking lice (Phthiraptera: Anoplura)
- J. Light, V. Smith, Julie M. Allen, L. Durden, D. Reed
- BiologyBMC Evolutionary Biology
- 22 September 2010
This study represents the first phylogenetic hypothesis of sucking louse relationships using molecular data and it finds significant conflict between phylogenies constructed using molecular and morphological data.