A Comparison of Two Brazilian Populations of Culex quinquefasciatus (Say, 1823) from Endemic and Non-endemic Areas to Infection with Wuchereria bancrofti (Cobbold, 1877)

Abstract

Culex quinquefasciatus is known to be an efficient insect host of

Bloodmeal microfilariae density and the uptake and establishment of Wuchereria bancrofti infections in Culex quinquefasciatus and Aedes aegypti

“…quinquefasciatus is limited, and independent of mf density in the blood meal (1 to 3.2 per mosquito). Brito et al (1997) reporting on a study in Maceió e Belo Horizonte found a similar range of L3/mosquito (1.62 and 2.62) after feeding on donor with 450 and 700 mf/ml -1 , respectively. Southgate and Bryan (1992) suggested some limitation to development for filarial infections in Cx.…”

“…It has long been recognized that intrinsic difference in the dynamic relationship between W. bancrofti and its vectors necessitates the performance of detailed studies in each endemic area (Samarawickrema & Laurence 1978, McGreevy et al 1982, Lowichich & Lowrie 1988, Brito et al 1997. This study provides the first data of this type for Recife.…”

“…aegypti is also abundant in Recife, but it is not regarded as a natural vector of W. bancrofti, however understanding of the relationship mosquito/parasite is relevant to studies concerned to immune mechanism of refractory species. It has been suggested that the relationship between the density of mf in human blood, the ingestion of mf and production of L3 larvae is an important determinant of transmission dynamics of lymphatic filariasis (Brito et al 1997, Calheiros et al 1998). …”

Vector competence of Culex quinquefasciatus say from different regions of Brazil to Dirofilaria immitis

“…scapularis noted by Macêdo et al (1998). Kartman (1953Kartman ( , 1954, Ramachandan (1970) and Brito et al (1997).…”

“…Moreover, there have been reports of vector competence differences between Cx. quinquefasciatus populations isolated from regions with various levels of prevalence of bancroftian filariasis (Janousek & Lowrie 1989, Brito et al 1997, Calheiros et al 1998. Could Cx.…”