Studies on mosquitoes (Diptera: Culicidae) and anthropic environment: 6 - Breeding in empty conditions of rice fields in South-Eastern Brazil

Abstract

FORATTINI, O.P. et al, Studies on mosquitoes (Diptera: Culicidae) and anthropic environment, 6 -Breeding in empty conditions of rice fields in South-Eastern Brazil. Rev. Saúde Pública, 28: 395-9,1994. Studies on culicid breeding in empty rice fields were carried out during the cultivation cycle from May to November 1993. This period corresponded to stages 1 and 2, when empty conditions prevailed. Breeding occurred in stage 1 and the first part of stage 2, corresponding respectively to fallow uncultivated and ploughing situations. No breeding was found to take place during the second part of stage 2 when transient floods and harrowing occurred. The predominant species were Aedes scapularis, Culex nigripalpus and Cx. mollis. The Pilosus Group of Culex (Melanoconion) was found at lower densities. Some epidemiological considerations are presented.

Periodic dynamic systems for infected hosts and mosquitoes

“…The main motivation for the construction of the model here presented as well as the applications made was the recent studies by Forattini et al 4 on mosquitoes at an experimental rice irrigation system 5,6,7,8,9 .…”

Caracterização de três populações de Ochlerotatus scapularis (Rondani, 1848) do eixo do Rio de Janeiro-São Paulo, utilizando marcadores genéticos e morfológicos.

“…As larvas se desenvolvem em coleções hídricas de caráter provisório ou permanente (Forattini et al, 1994) e já foram encontradas em recipientes artificiais (Forattini et al, 1997). Contudo isso mostra um início de adaptação às regiões urbanas e certa tendência à endofilia, principalmente próximo às moradias em ambiente rural e semi-rural (Forattini et al, 1995;Taipe-Lagos, Natal, 2003;) fazendo dessa espécie um potencial risco à saúde pública, já que esta é incriminada como vetora de diversos agente etiológicos de arboviroses (Forattini, 2002) e filarioses (Labarthe et al,1998).…”