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Phylogeny of the hard ticks (Ixodidae) inferred from 18S rRNA indicates that the genus Aponomma is paraphyletic.
Mol Phylogenet Evol. 1999 Mar; 11(2):288-95.MP

Abstract

We examined the phylogeny of ticks (Acari:Parasitiformes:Ixodida) and their closest known mite relatives (Acari:Parasitiformes:Mesostigmata and Holothyrida) using 18S rRNA sequences. In our analyses, we included sequences from 36 taxa. Sequences for 13 hard ticks (Family Ixodidae), 5 soft ticks (Family Argasidae), and 2 mesostigmatid mites were obtained from the GenBank database and we generated sequences for 15 hard ticks and 1 holothyrid mite. Ten of these tick species were endemic to Australia. Our analyses indicated that the suborder Holothyrida is more closely related to Ixodida than to Mesostigmata, the group used as outgroup in earlier molecular studies. This finding is consistent with Lehtinen's (1991) hypothesis that the Holothyrida rather than the Mesostigmata is the sister-group to the Ixodida. Within the hard ticks the genus Aponomma and thus the family Amblyomminae were paraphyletic. Taxonomic revision of these taxa is needed. The genus Amblyomma was paraphyletic without the inclusion of "typical" Aponomma species (Ap. latum and Ap. fimbriatum). There was a basal divergence between endemic Australian and other species in both the Metastriata and the Prostriata divisions of the hard ticks.

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Authors+Show Affiliations

Dobson SJ
Department of Parasitology, The University of Queensland, St. Lucia, Queensland, 4072, Australia. s.dobson@mailbox.uq.edu.au
Barker SC
No affiliation info available

MeSH

AnimalsAustraliaIxodesLikelihood FunctionsModels, BiologicalMolecular Sequence DataPhylogenyRNA, Ribosomal, 18STicks

Pub Type(s)

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

Language

eng

PubMed ID

10191073

Citation

Dobson, S J., and S C. Barker. "Phylogeny of the Hard Ticks (Ixodidae) Inferred From 18S rRNA Indicates That the Genus Aponomma Is Paraphyletic." Molecular Phylogenetics and Evolution, vol. 11, no. 2, 1999, pp. 288-95.
Dobson SJ, Barker SC. Phylogeny of the hard ticks (Ixodidae) inferred from 18S rRNA indicates that the genus Aponomma is paraphyletic. Mol Phylogenet Evol. 1999;11(2):288-95.
Dobson, S. J., & Barker, S. C. (1999). Phylogeny of the hard ticks (Ixodidae) inferred from 18S rRNA indicates that the genus Aponomma is paraphyletic. Molecular Phylogenetics and Evolution, 11(2), 288-95.
Dobson SJ, Barker SC. Phylogeny of the Hard Ticks (Ixodidae) Inferred From 18S rRNA Indicates That the Genus Aponomma Is Paraphyletic. Mol Phylogenet Evol. 1999;11(2):288-95. PubMed PMID: 10191073.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phylogeny of the hard ticks (Ixodidae) inferred from 18S rRNA indicates that the genus Aponomma is paraphyletic. AU - Dobson,S J, AU - Barker,S C, PY - 1999/4/7/pubmed PY - 1999/4/7/medline PY - 1999/4/7/entrez SP - 288 EP - 95 JF - Molecular phylogenetics and evolution JO - Mol Phylogenet Evol VL - 11 IS - 2 N2 - We examined the phylogeny of ticks (Acari:Parasitiformes:Ixodida) and their closest known mite relatives (Acari:Parasitiformes:Mesostigmata and Holothyrida) using 18S rRNA sequences. In our analyses, we included sequences from 36 taxa. Sequences for 13 hard ticks (Family Ixodidae), 5 soft ticks (Family Argasidae), and 2 mesostigmatid mites were obtained from the GenBank database and we generated sequences for 15 hard ticks and 1 holothyrid mite. Ten of these tick species were endemic to Australia. Our analyses indicated that the suborder Holothyrida is more closely related to Ixodida than to Mesostigmata, the group used as outgroup in earlier molecular studies. This finding is consistent with Lehtinen's (1991) hypothesis that the Holothyrida rather than the Mesostigmata is the sister-group to the Ixodida. Within the hard ticks the genus Aponomma and thus the family Amblyomminae were paraphyletic. Taxonomic revision of these taxa is needed. The genus Amblyomma was paraphyletic without the inclusion of "typical" Aponomma species (Ap. latum and Ap. fimbriatum). There was a basal divergence between endemic Australian and other species in both the Metastriata and the Prostriata divisions of the hard ticks. SN - 1055-7903 UR - https://www.unboundmedicine.com/medline/citation/10191073/Phylogeny_of_the_hard_ticks__Ixodidae__inferred_from_18S_rRNA_indicates_that_the_genus_Aponomma_is_paraphyletic_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1055-7903(98)90565-6 DB - PRIME DP - Unbound Medicine ER -