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Characterisation of a β-tubulin gene from the monogenean parasite, Gyrodactylus salaris Malmberg, 1957

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The cDNA and two partial genomic sequences of β-tubulin genes have been isolated from the monogenean parasite Gyrodactylus salaris. The cDNA sequence is not represented by either of the genomic sequences, implying that at least three isotypes of the gene exist in G. salaris. The sequences show regions of high homology with other helminth β-tubulin genes. This represents the first isolation of a β-tubulin gene from a monogenean and contributes to the overall characterisation of these genes within the helminths. This is an important area, as anthelmintic resistance is increasing against benzimidazole drugs that target the β-tubulin gene. Benzimidazole drugs have been tested successfully against Gyrodactylus parasites, but their use is not widespread. Should it increase, analysis of the β-tubulin gene may provide a tool for monitoring resistance development and improving management practises. Use of the β-tubulin gene in the identification of Gyrodactylus species may prove complex due to the presence of different isotypes.

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The authors would like to thank Dr. Tor Atle Mo and Kjetil Olstad of the National Veterinary Institute, Oslo, for provision of parasites and thank the EU FAIR programme (FAIR CT97-3406) for partial funding of this work.

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Correspondence to C. M. Collins.

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Collins, C.M., Miller, K.A. & Cunningham, C.O. Characterisation of a β-tubulin gene from the monogenean parasite, Gyrodactylus salaris Malmberg, 1957. Parasitol Res 92, 390–399 (2004). https://doi.org/10.1007/s00436-003-1028-x

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