Mitochondrial DNA variation of Triatoma infestans populations and its implication on the specific status of T. melanosoma
Mem. Inst. Oswaldo Cruz
;
94(suppl.1): 229-38, Sept. 1999. ilus, mapas, tab
Article
in English
| LILACS
| ID: lil-245627
RESUMO
DNA sequence comparison of 412 base-pairs fragments of the mitochondrial cytochrome B gene was used to infer the genetic structure of nine geographical Triatoma infestans populations and their phylogenetic relationship with T. melanosoma and T. brasiliensis. T. infestans and T. melanosoma were compared by morphometry, allozyme and cytogenetic analyses, as well as subjected to reciprocal crosses, in order to clarify the taxonomic status of the latter. No differences were found to distinguish the two species and the crosses between them yielded progeny. T. infestans populations presented four haplotypes that could be separated in two clusters: one formed by the samples from Bolivia (Andes and Chaco) and the other formed by samples from Argentina and Brazil. Silvatic and domestic T. infestans populations from Bolivia (Andes) were genetically identical.
Full text:
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Index:
LILACS (Americas)
Main subject:
Triatoma
/
Genetic Variation
/
DNA, Mitochondrial
Limits:
Animals
Country/Region as subject:
South America
/
Argentina
/
Bolivia
/
Brazil
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
1999
Type:
Article
/
Congress and conference
Affiliation country:
Benin
/
United States
/
United kingdom
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