Malaria entomological risk factors in relation to land cover in the Lower Caura River Basin, Venezuela
Mem. Inst. Oswaldo Cruz
; 108(2): 220-228, abr. 2013. tab, graf
Article
de En
| LILACS
| ID: lil-670400
Bibliothèque responsable:
BR1.1
ABSTRACT
To explore the effects of deforestation and resulting differences in vegetation and land cover on entomological parameters, such as anopheline species composition, abundance, biting rate, parity and entomological inoculation rate (EIR), three villages were selected in the Lower Caura River Basin, state of Bolívar, Venezuela. All-night mosquito collections were conducted between March 2008-January 2009 using CDC light traps and Mosquito Magnet(r) Liberty Plus. Human landing catches were performed between 0600 pm-1000 pm, when anophelines were most active. Four types of vegetation were identified. The Annual Parasite Index was not correlated with the type of vegetation. The least abundantly forested village had the highest anopheline abundance, biting rate and species diversity. Anopheles darlingi and Anopheles nuneztovari were the most abundant species and were collected in all three villages. Both species showed unique biting cycles. The more abundantly forested village of El Palmar reported the highest EIR. The results confirmed previous observations that the impacts of deforestation and resulting changes in vegetation cover on malaria transmission are complex and vary locally.
Mots clés
Texte intégral:
1
Indice:
LILACS
Sujet Principal:
Biodiversité
/
Comportement alimentaire
/
Vecteurs insectes
/
Paludisme
/
Anopheles
Type d'étude:
Etiology_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limites du sujet:
Animals
/
Female
/
Humans
/
Male
Pays comme sujet:
America do sul
/
Venezuela
langue:
En
Texte intégral:
Mem. Inst. Oswaldo Cruz
Thème du journal:
MEDICINA TROPICAL
/
PARASITOLOGIA
Année:
2013
Type:
Article