Absence of domestic triatomine colonies in an area of the coastal region of Ecuador where Chagas disease is endemic
Mem. Inst. Oswaldo Cruz
;
105(5): 677-681, Aug. 2010. mapas, tab
Article
in English
| LILACS
| ID: lil-557229
ABSTRACT
Rhodnius ecuadoriensis is considered the second most important vector of Chagas disease in Ecuador. It is distributed across six of the 24 provinces and occupies intradomiciliary, peridomiciliary and sylvatic habitats. This study was conducted in six communities within the coastal province of Guayas. Triatomine searches were conducted in domestic and peridomestic habitats and bird nests using manual searches, live-bait traps and sensor boxes. Synantrhopic mammals were captured in the domestic and peridomestic habitats. Household searches (n = 429) and randomly placed sensor boxes (n = 360) produced no live triatomine adults or nymphs. In contrast, eight nymphs were found in two out of six searched Campylorhynchus fasciatus (Troglodytidae) nests. Finally, Trypanosoma cruzi DNA was amplified from the blood of 10 percent of the 115 examined mammals. Environmental changes in land use (intensive rice farming), mosquito control interventions and lack of intradomestic adaptation are suggested among the possible reasons for the lack of domestic triatomine colonies.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Trypanosoma cruzi
/
Triatominae
/
Chagas Disease
/
Endemic Diseases
/
Insect Vectors
Limits:
Animals
Country/Region as subject:
South America
/
Ecuador
Language:
English
Journal:
Mem. Inst. Oswaldo Cruz
Journal subject:
Tropical Medicine
/
Parasitology
Year:
2010
Type:
Article
Affiliation country:
Ecuador
/
United States
Institution/Affiliation country:
Ohio University/US
/
Pontifical Catholic University of Ecuador/EC
/
University of North Carolina/US
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