Use este identificador para citar ou linkar para este item: https://repositorio.inpa.gov.br/handle/1/18575
Título: Phylogeny of snake trypanosomes inferred by SSU rDNA sequences, their possible transmission by phlebotomines, and taxonomic appraisal by molecular, cross-infection and morphological analysis
Autor: Viola, Laerte B.
Campaner, Marta
Takata, Carmen S.A.
Ferreira, Robson C.
Rodrigues, Adriana Carlos
Freitas, Rui Alves de
Duarte, Marcelo Ribeiro
Grego, Kathleen Fernandes
Barrett, Toby Vincent
Camargo, Erney Plessmann
Teixeira, Marta Maria Geraldes
Palavras-chave: Ribosome Dna
Protozoal Dna
Ribosome Dna
Animals Experiment
Animals Model
Cladistics
Cross Infection
Dna Sequence
Host Parasite Interaction
Molecular Genetics
Molecular Phylogeny
Morphology
Nonhuman
Nucleotide Sequence
Phlebotomus
Phylogeny
Priority Journal
Protozoal Genetics
Snake
Taxonomy
Trypanosoma
Trypanosomiasis
Animals
Animals Disease
Classification
Disease Transmission
Genetics
Evolution, Molecular
Parasitology
Phylogeny
Physiology
Psychodidae
Snake
Ultrastructure
Bothrops Jararaca
Colubridae
Crotalus Durissus
Phlebotominae
Pseudoboa Nigra
Serpentes
Squamata
Trypanosoma
Viannamyia
Viperidae
Animal
Bothrops
Colubridae
Crotalus
Dna, Protozoan
Ribosomal Dna
Evolution, Molecular
Host-parasite Interactions
Molecular Sequence Data
Phylogeny
Psychodidae
Sequence Analysis, Dna
Trypanosoma
Trypanosomiasis
Viperidae
Data do documento: 2008
Revista: Parasitology
Encontra-se em: Volume 135, Número 5, Pags. 595-605
Abstract: Blood examination by microhaematocrit and haemoculture of 459 snakes belonging to 37 species revealed 2.4% trypanosome prevalence in species of Viperidae (Crotalus durissus and Bothrops jararaca) and Colubridae (Pseudoboa nigra). Trypanosome cultures from C. durissus and P. nigra were behaviourally and morphologically indistinguishable. In addition, the growth and morphological features of a trypanosome from the sand fly Viannamyia tuberculata were similar to those of snake isolates. Cross-infection experiments revealed a lack of host restriction, as snakes of 3 species were infected with the trypanosome from C. durissus. Phylogeny based on ribosomal sequences revealed that snake trypanosomes clustered together with the sand fly trypanosome, forming a new phylogenetic lineage within Trypanosoma closest to a clade of lizard trypanosomes transmitted by sand flies. The clade of trypanosomes from snakes and lizards suggests an association between the evolutionary histories of these trypanosomes and their squamate hosts. Moreover, data strongly indicated that these trypanosomes are transmitted by sand flies. The flaws of the current taxonomy of snake trypanosomes are discussed, and the need for molecular parameters to be adopted is emphasized. To our knowledge, this is the first molecular phylogenetic study of snake trypanosomes. © 2008 Cambridge University Press.
DOI: 10.1017/S0031182008004253
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