| Full text | |
| Author(s): |
Gomes, Almerio de Castro
[1]
;
de Paula, Marcia Bicudo
;
Natal, Delsio
;
Davidson Gotlieb, Sabina Lea
;
Mucci, Luis Filipe
Total Authors: 5
|
| Affiliation: | [1] Univ Sao Paulo, FSP, Sch Publ Hlth, Dept Epidemiol, BR-01246904 Sao Paulo - Brazil
Total Affiliations: 1
|
| Document type: | Journal article |
| Source: | Revista da Sociedade Brasileira de Medicina Tropical; v. 43, n. 5, p. 516-522, SEP-OCT 2010. |
| Web of Science Citations: | 4 |
| Abstract | |
INTRODUCTION: Study of the temporal activity of malaria vectors during the implantation of a hydroelectric power station on the River Paraná, intended to generate electrical energy. The river separates the States of São Paulo and Mato Grosso do Sul, in Brazil. The objective was to verify whether alterations occurred in the wealth and diversity indices of Anopheles, following two successive floods, extended to the temporal activity and nycthemeral rhythm followed over a five year period. METHODS: Mosquito capture was performed monthly using the Human Attraction Technique and Shannon Traps. The first, executed for 24h, provided the nycthemeral rhythm and the second, lasting 15h, permitted the tracking of Anopheles during the two floods. RESULTS: The bimodal pattern of Anopheles darlingi defined before these floods was modified throughout the environment interventions. The same effect had repercussions on the populations of An albitarsis s.l., An triannulatus and An galvaoi. Activity prior to twilight was less affected by the environment alterations. CONCLUSIONS: The dam construction provoked changes in Anopheles temporal activity patterns, permitting classification of the area as an ecologically steady and unstable situation. Differences observed in Anopheles behavior due to the capture methods revealed the influence of solo and multiple attractiveness inside the populations studied. (AU) | |