Helene Mariko Ueno1, Oswaldo Paulo Forattini, Ina Kakitani. 1. Núcleo de Pesquisa Taxonômica e Sistemática em Entomologia Médica, Faculdade de Saúde Pública, Universidade de São Paulo, Av. Dr. Arnaldo 715, 01246-904 São Paulo, SP, Brazil. papoula@usp.br
Abstract
OBJECTIVE: Anopheles bellator e An. cruzii are vectors of the so-called bromeliad-malaria, typical of conserved areas. The objective was to evaluate the seasonal and vertical distribution of these anophelines, aiming at assessing the risk of malaria transmission. METHODS: In the municipality of Ilha Comprida, Southeastern Brazil, CDC light traps baited with dry ice were placed fortnightly from 17:00 to 20:00, at one, six and 12 meters high from September 2001 to September 2002. Association between An. bellator and An. cruzii densities and weather were assessed by Spearman coefficient and comparisons among heights and species densities were made by Mann-Whitney non-parametric test. RESULTS: A total of 55,226 mosquitoes were caught: 1,341 were An. bellator (2.4% of Culicidae), 278 at one meter, 261 at six meter and 802 at 12m high. Following the same sequence, An. cruzii was represented by 452, 1,032 and 4,420 adults, totalizing 5,904 mosquitoes (10.7%). There was a positive correlation between densities of both species and daily maximum temperature, and between density of An. bellator and thermal amplitude. The densities were higher for both species at tree canopy. At the three levels, the density of An. cruzii was higher. CONCLUSIONS: The acrodendrophilic behavior of these species was confirmed, remarkably in An. cruzii. After aggressive measures of control, these anophelines have remained in this region, but they are not under entomological surveillance. The persistent transmission of malaria and increasing tourism activities in this region highlight the need for surveillance of these species.
OBJECTIVE:Anopheles bellator e An. cruzii are vectors of the so-called bromeliad-malaria, typical of conserved areas. The objective was to evaluate the seasonal and vertical distribution of these anophelines, aiming at assessing the risk of malaria transmission. METHODS: In the municipality of Ilha Comprida, Southeastern Brazil, CDC light traps baited with dry ice were placed fortnightly from 17:00 to 20:00, at one, six and 12 meters high from September 2001 to September 2002. Association between An. bellator and An. cruzii densities and weather were assessed by Spearman coefficient and comparisons among heights and species densities were made by Mann-Whitney non-parametric test. RESULTS: A total of 55,226 mosquitoes were caught: 1,341 were An. bellator (2.4% of Culicidae), 278 at one meter, 261 at six meter and 802 at 12m high. Following the same sequence, An. cruzii was represented by 452, 1,032 and 4,420 adults, totalizing 5,904 mosquitoes (10.7%). There was a positive correlation between densities of both species and daily maximum temperature, and between density of An. bellator and thermal amplitude. The densities were higher for both species at tree canopy. At the three levels, the density of An. cruzii was higher. CONCLUSIONS: The acrodendrophilic behavior of these species was confirmed, remarkably in An. cruzii. After aggressive measures of control, these anophelines have remained in this region, but they are not under entomological surveillance. The persistent transmission of malaria and increasing tourism activities in this region highlight the need for surveillance of these species.
Authors: Jesús Eduardo Escovar; Ranulfo González; Martha L Quiñones; Richard C Wilkerson; Fredy Ruiz; Bruce A Harrison Journal: Mem Inst Oswaldo Cruz Date: 2014-07 Impact factor: 2.743
Authors: Julyana Cerqueira Buery; Filomena Euridice Carvalho de Alencar; Ana Maria Ribeiro de Castro Duarte; Ana Carolina Loss; Creuza Rachel Vicente; Lucas Mendes Ferreira; Blima Fux; Márcia Melo Medeiros; Pedro Cravo; Ana Paula Arez; Crispim Cerutti Junior Journal: Microorganisms Date: 2021-01-08
Authors: Luísa D P Rona; Carlos J Carvalho-Pinto; Carla Gentile; Edmundo C Grisard; Alexandre A Peixoto Journal: Malar J Date: 2009-04-09 Impact factor: 2.979
Authors: Karin Kirchgatter; Rosa Maria Tubaki; Rosely dos Santos Malafronte; Isabel Cristina Alves; Giselle Fernandes Maciel de Castro Lima; Lilian de Oliveira Guimarães; Robson de Almeida Zampaulo; Gerhard Wunderlich Journal: Rev Inst Med Trop Sao Paulo Date: 2014 Sep-Oct Impact factor: 1.846
Authors: Laura Cristina Multini; Ana Letícia da Silva de Souza; Mauro Toledo Marrelli; André Barretto Bruno Wilke Journal: Sci Rep Date: 2020-10-22 Impact factor: 4.379