02725nas a2200373 4500008004100000245008900041210006900130260000900199300001300208490000800221520174900229653000901978653001701987653001902004653001602023653001502039653001702054653001102071653000902082653001502091653000902106653000902115653001302124653001302137653000802150653001702158653001402175653001102189653001402200653001102214653001902225100002702244856008002271 2001 eng d00aAvian louse phylogeny (Phthiraptera: Ischnocera): a cladistic study based morphology0 aAvian louse phylogeny Phthiraptera Ischnocera a cladistic study c2001 a81 - 1440 v1323 a
The louse suborder Ischnocera (Phthiraptera) contains 3,060 currently described species from over 150 genera. These lice are permanent obligatory ectoparasites of a diverse selection of birds and mammals with a worldwide distribution. They have historically played a major role in the development of our ideas on coevolution, and species hosted by mammals have been used extensively as model organism for the study of cospeciation. In contrast, avian taxa comprising 90% of ischnoceran species have been largely neglected due to a lack of data on their wider systematics. A comparative study of based on adult and instar morphology of avian lice yielded 138 characters from 56 species (51 genera), all of which are figured or discussed for the first time. A further five outgroup taxa were examined from the mammalian ischnoceran family Trichodectidae. Phylogenetic analyses of these data produced three most parsimonious cladograms, the strict consensus of which is highly resolved and broadly consistent with previous classifications. Morphological character variation is extensive, and nymphal character traits are essential to identify instances of convergent evolution in adult morphology. The role of ontogeny in the development of the major character complexes of the head and abdomen is discussed and its implications for further work on the phylogeny of avian Ischnocera is considered. Comparison with host taxonomy reveals a pattern that is broadly consistent with a hypothesis of cospeciation. However, host - parasite associations are complex and difficult to interpret due to the low sample size. The role of niche specialisation to explain the presence of multiple unrelated lineages on the same host taxon is considered.
10abird10aChewing lice10aclassification10acoevolution10acongruence10acospeciation10agopher10ahost10aIschnocera10alice10amtax10aontogeny10aparasite10aPHP10aPhthiraptera10aPhylogeny10apocket10aselection10asexual10atrichodectidae1 aSmith, Vincent, Stuart uhttps://phthiraptera.myspecies.info/sites/phthiraptera.info/files/39652.pdf