A preliminary analysis of the population genetics and molecular phylogenetics of Onchocerca volvulus (Nematoda: Filarioidea) using nuclear ribosomal second internal transcribed spacer sequences
Mem. Inst. Oswaldo Cruz
;
102(7): 879-882, Nov. 2007. ilus, tab
Artículo
en Inglés
| LILACS
| ID: lil-470351
ABSTRACT
Nuclear internal transcribed spacer 2 (ITS2) rDNA sequences were used for a molecular phylogenetics analysis of five Onchocerca species. The sister species of the human parasite O. volvulus was found to be the cattle parasite O. ochengi and not O. gibsoni, contrary to chromosomal evidence. The genetic differentiation of two African populations (representing the two African strains) and a Brazilian population of O. volvulus was also studied. Phylogenetic and network reconstruction did not show any clustering of ITS2 alleles on geographic or strain grounds. Furthermore, population genetics tests showed no indication of population differentiation but suggested gene flow among the three populations.
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Transcripción Genética
/
Variación Genética
/
Onchocerca volvulus
/
ADN de Helmintos
/
ADN Espaciador Ribosómico
Límite:
Animales
/
Humanos
Idioma:
Inglés
Revista:
Mem. Inst. Oswaldo Cruz
Asunto de la revista:
Medicina Tropical
/
Parasitología
Año:
2007
Tipo del documento:
Artículo
País de afiliación:
Portugal
/
Reino Unido
Institución/País de afiliación:
The Natural History Museum/GB
/
Universidade do Porto/PT
/
University of Greenwich at Medway/GB
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