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Phylogenetic analysis of partial sequences of elongation factor 1alpha identifies major groups of lice (Insecta: Phthiraptera).
Mol Phylogenet Evol. 2001 May; 19(2):202-15.MP

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 1alpha 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 Chelopistes and Oxylipeurus, two lice occupying different ecological niches on the same host, which have previously been assigned to different families. These results provide evidence 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. We discuss our attempts to overcome the limitations of this large data set, including the use of leaf stability analysis, a new method for analyzing the stability of taxa in a phylogenetic tree, and examine a number of hypotheses of relationships based on both traditional taxonomy and host associations.

Authors+Show Affiliations

Division of Environmental and Evolutionary Biology, Institute of Biomedical and Life Sciences, University of Glasgow, Graham Kerr Building, Glasgow, G12 8QQ, United Kingdom.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

11341803

Citation

Cruickshank, R H., et al. "Phylogenetic Analysis of Partial Sequences of Elongation Factor 1alpha Identifies Major Groups of Lice (Insecta: Phthiraptera)." Molecular Phylogenetics and Evolution, vol. 19, no. 2, 2001, pp. 202-15.
Cruickshank RH, Johnson KP, Smith VS, et al. Phylogenetic analysis of partial sequences of elongation factor 1alpha identifies major groups of lice (Insecta: Phthiraptera). Mol Phylogenet Evol. 2001;19(2):202-15.
Cruickshank, R. H., Johnson, K. P., Smith, V. S., Adams, R. J., Clayton, D. H., & Page, R. D. (2001). Phylogenetic analysis of partial sequences of elongation factor 1alpha identifies major groups of lice (Insecta: Phthiraptera). Molecular Phylogenetics and Evolution, 19(2), 202-15.
Cruickshank RH, et al. Phylogenetic Analysis of Partial Sequences of Elongation Factor 1alpha Identifies Major Groups of Lice (Insecta: Phthiraptera). Mol Phylogenet Evol. 2001;19(2):202-15. PubMed PMID: 11341803.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phylogenetic analysis of partial sequences of elongation factor 1alpha identifies major groups of lice (Insecta: Phthiraptera). AU - Cruickshank,R H, AU - Johnson,K P, AU - Smith,V S, AU - Adams,R J, AU - Clayton,D H, AU - Page,R D, PY - 2001/5/9/pubmed PY - 2001/7/13/medline PY - 2001/5/9/entrez SP - 202 EP - 15 JF - Molecular phylogenetics and evolution JO - Mol Phylogenet Evol VL - 19 IS - 2 N2 - 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 1alpha 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 Chelopistes and Oxylipeurus, two lice occupying different ecological niches on the same host, which have previously been assigned to different families. These results provide evidence 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. We discuss our attempts to overcome the limitations of this large data set, including the use of leaf stability analysis, a new method for analyzing the stability of taxa in a phylogenetic tree, and examine a number of hypotheses of relationships based on both traditional taxonomy and host associations. SN - 1055-7903 UR - https://www.unboundmedicine.com/medline/citation/11341803/Phylogenetic_analysis_of_partial_sequences_of_elongation_factor_1alpha_identifies_major_groups_of_lice__Insecta:_Phthiraptera__ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1055-7903(01)90928-5 DB - PRIME DP - Unbound Medicine ER -