Author： Cruickshank R.H. Johnson K.P. Smith V.S. Adams R.J. Clayton D.H. Page R.D.M.
Publisher： Academic Press
ISSN： 1055-7903
Source： Molecular Phylogenetics and Evolution, Vol.19, Iss.2, 2001-05, pp. : 202-215
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Abstract
As a first attempt to use molecular data to resolve the relationships between the four suborders of lice and within the suborder Ischnocera, we sequenced a 347-bp fragment of the elongation factor 1α gene of 127 lice (Insecta: Phthiraptera) as well as outgroup taxa from the order Psocoptera. A number of well-supported monophyletic groups were found but the relationships among many of these groups could not be resolved. While it is probable that multiple substitutions at high divergences and ancient radiation over a short period of time have contributed to the problem, we attribute most of this lack of resolution to the high ratio of taxa to characters. Nevertheless, the sequence data unequivocally support a number of important relationships that are at variance with the conclusions of morphological taxonomy. These include the sister group relationship of
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