Genetic structure of Triatoma sordida (Hemiptera: Reduciidae) domestic populations from Bolivia: application on control interventions
Mem. Inst. Oswaldo Cruz
;
94(3): 347-51, May-Jun. 1999. graf, tab
Article
in English
| LILACS
| ID: lil-239041
ABSTRACT
The genetic population of Triatoma sordida group 1, a secondary vector of Chagas disease in Bolivia, was studied by multi-locus enzyme electrophoresis. A total of 253 nymphal and adult specimens collected from seven neighbouring localities in the Velasco Province, Department of Santa Cruz, were processed. The relatively low genetic variability was confirmed for this species (rate of polymorphism 0.20). The absence of genetic disequilibrium detected within the seven localities was demonstrated. A geographical structuration appears between localities with distances greater than 20 km apart. Although T. sordida presents a relatively reduced dispersive capacity, its panmictic unit is wider than compared with T. infestans. Genetic distances between T. sordida populations were correlated with geographic distance. Gene flow between geographic populations of T. sordida provides an efficent framework for effective vigilance and control protocols.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Triatoma
/
Residence Characteristics
/
Chagas Disease
/
Disease Vectors
/
Electrophoresis
Limits:
Animals
Country/Region as subject:
South America
/
Bolivia
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
1999
Type:
Article
Affiliation country:
Bolivia
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