Novel trypanosome Trypanosoma gilletti sp. (Euglenozoa: Trypanosomatidae) and the extension of the host range of Trypanosoma copemani to include the koala (Phascolarctos cinereus)

Trypanosoma irwini was previously described from koalas and we now report the finding of a second novel species, T. gilletti, as well as the extension of the host range of Trypanosoma copemani to include koalas. Phylogenetic analysis at the 18S rDNA and gGAPDH loci demonstrated that T. gilletti was...

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Veröffentlicht in:Parasitology 2011-01, Vol.138 (1), p.59-70
Hauptverfasser: McINNES, L. M., HANGER, J., SIMMONS, G., REID, S. A., RYAN, U. M.
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HANGER, J.
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RYAN, U. M.
description Trypanosoma irwini was previously described from koalas and we now report the finding of a second novel species, T. gilletti, as well as the extension of the host range of Trypanosoma copemani to include koalas. Phylogenetic analysis at the 18S rDNA and gGAPDH loci demonstrated that T. gilletti was genetically distinct with a genetic distance (±s.e.) at the 18S rDNA locus of 2·7±0·5% from T. copemani (wombat). At the gGAPDH locus, the genetic distance (±s.e.) of T. gilletti was 8·7±1·1% from T. copemani (wombat). Trypanosoma gilletti was detected using a nested trypanosome 18S rDNA PCR in 3/139 (∼2%) blood samples and in 2/29 (∼7%) spleen tissue samples from koalas whilst T. irwini was detected in 72/139 (∼52%) blood samples and T. copemani in 4/139 (∼3%) blood samples from koalas. In addition, naturally occurring mixed infections were noted in 2/139 (∼1·5%) of the koalas tested.
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subjects Animals
Australia
Biological and medical sciences
Blood
DNA, Protozoan - genetics
DNA, Ribosomal - genetics
Fundamental and applied biological sciences. Psychology
General aspects
General aspects and techniques. Study of several systematic groups. Models
Glyceraldehyde-3-Phosphate Dehydrogenases - genetics
Host Specificity
Invertebrates
Mammalia
Molecular Sequence Data
Phascolarctidae - parasitology
Phylogeny
Protozoa
Protozoan Infections, Animal - parasitology
RNA, Ribosomal, 18S - genetics
Trypanosoma - classification
Trypanosoma - genetics
Trypanosoma - isolation & purification
Trypanosoma - physiology
Vertebrates: general zoology, morphology, phylogeny, systematics, cytogenetics, geographical distribution
title Novel trypanosome Trypanosoma gilletti sp. (Euglenozoa: Trypanosomatidae) and the extension of the host range of Trypanosoma copemani to include the koala (Phascolarctos cinereus)
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