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Molecular phylogeny of tubificid oligochaetes with special emphasis on Tubifex tubifex (Tubificidae).
Mol Phylogenet Evol. 2001 May; 19(2):216-24.MP

Abstract

Tubifex tubifex is a cosmopolitan freshwater oligochaete whose presence has been studied as a health indicator of the aquatic environment and as a host for several myxozoan parasites of fish. Unfortunately, current morphological criteria used to distinguish Tubifex spp. (Tubificidae) are inadequate. We therefore developed mitochondrial 16S ribosomal DNA markers to examine phylogenetic relationships among aquatic oligochaetes and to distinguish species of Tubifex that might serve as hosts for a particular myxozoan parasite, Myxobolus cerebralis. Our phylogenetic analyses of oligochaetes based on a 378-bp segment yielded one most parsimonious tree with three major groups that corresponded to the families Lumbricidae, Sparganophilidae, and Tubificidae. T. tubifex and T. ignotus formed a monophyletic assemblage, and a sister relationship between the genera Tubifex and Limnodrilus was strongly supported. A second analysis of the relationship within the genus Tubifex identified six genetically distinct lineages of T. tubifex from North America and Europe that were separated by genetic distances comparable to those found for "well-defined" species of Limnodrilus. Therefore, the existence of several morphologically indistinguishable, thus cryptic, species of Tubifex in North America and Europe is suggested.

Authors+Show Affiliations

Beauchamp KA
Department of Medicine and Epidemiology, School of Veterinary Medicine, Davis, California 95616, USA.
Kathman RD
No affiliation info available
McDowell TS
No affiliation info available
Hedrick RP
No affiliation info available

MeSH

AnimalsDNADNA, MitochondrialEvolution, MolecularGeographyMolecular Sequence DataOligochaetaPhylogenyRNA, Ribosomal, 16SSequence Analysis, DNA

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

11341804

Citation

Beauchamp, K A., et al. "Molecular Phylogeny of Tubificid Oligochaetes With Special Emphasis On Tubifex Tubifex (Tubificidae)." Molecular Phylogenetics and Evolution, vol. 19, no. 2, 2001, pp. 216-24.
Beauchamp KA, Kathman RD, McDowell TS, et al. Molecular phylogeny of tubificid oligochaetes with special emphasis on Tubifex tubifex (Tubificidae). Mol Phylogenet Evol. 2001;19(2):216-24.
Beauchamp, K. A., Kathman, R. D., McDowell, T. S., & Hedrick, R. P. (2001). Molecular phylogeny of tubificid oligochaetes with special emphasis on Tubifex tubifex (Tubificidae). Molecular Phylogenetics and Evolution, 19(2), 216-24.
Beauchamp KA, et al. Molecular Phylogeny of Tubificid Oligochaetes With Special Emphasis On Tubifex Tubifex (Tubificidae). Mol Phylogenet Evol. 2001;19(2):216-24. PubMed PMID: 11341804.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Molecular phylogeny of tubificid oligochaetes with special emphasis on Tubifex tubifex (Tubificidae). AU - Beauchamp,K A, AU - Kathman,R D, AU - McDowell,T S, AU - Hedrick,R P, PY - 2001/5/9/pubmed PY - 2001/7/13/medline PY - 2001/5/9/entrez SP - 216 EP - 24 JF - Molecular phylogenetics and evolution JO - Mol Phylogenet Evol VL - 19 IS - 2 N2 - Tubifex tubifex is a cosmopolitan freshwater oligochaete whose presence has been studied as a health indicator of the aquatic environment and as a host for several myxozoan parasites of fish. Unfortunately, current morphological criteria used to distinguish Tubifex spp. (Tubificidae) are inadequate. We therefore developed mitochondrial 16S ribosomal DNA markers to examine phylogenetic relationships among aquatic oligochaetes and to distinguish species of Tubifex that might serve as hosts for a particular myxozoan parasite, Myxobolus cerebralis. Our phylogenetic analyses of oligochaetes based on a 378-bp segment yielded one most parsimonious tree with three major groups that corresponded to the families Lumbricidae, Sparganophilidae, and Tubificidae. T. tubifex and T. ignotus formed a monophyletic assemblage, and a sister relationship between the genera Tubifex and Limnodrilus was strongly supported. A second analysis of the relationship within the genus Tubifex identified six genetically distinct lineages of T. tubifex from North America and Europe that were separated by genetic distances comparable to those found for "well-defined" species of Limnodrilus. Therefore, the existence of several morphologically indistinguishable, thus cryptic, species of Tubifex in North America and Europe is suggested. SN - 1055-7903 UR - https://www.unboundmedicine.com/medline/citation/11341804/Molecular_phylogeny_of_tubificid_oligochaetes_with_special_emphasis_on_Tubifex_tubifex__Tubificidae__ DB - PRIME DP - Unbound Medicine ER -