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Correlates of the peridomestic abundance of Lutzomyia longipalpis (Diptera: Psychodidae) in Amazonian Brazil
Author(s) -
QUINNELL R. J.,
DYE C.
Publication year - 1994
Publication title -
medical and veterinary entomology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.028
H-Index - 82
eISSN - 1365-2915
pISSN - 0269-283X
DOI - 10.1111/j.1365-2915.1994.tb00502.x
Subject(s) - biology , psychodidae , sandfly , woodland , abundance (ecology) , ecology , vector (molecular biology) , leishmaniasis , zoology , leishmania , parasite hosting , biochemistry , world wide web , computer science , gene , immunology , recombinant dna
. Abundance of the sandfly Lutzomyia longipalpis , the vector of Leishmania chagasi , was surveyed using CDC light‐suction traps in fifteen villages and 180 homesteads on Marajo island, Para State, Brazil. Flies were most abundant in cultivated areas, secondary growth and open woodland, away from savanna grassland and forest. Within homesteads, the abundance of flies in animal sheds was weakly associated with the number of hosts kept therein, and inversely related to the number elsewhere, both human and animal. Houses harboured more flies if dogs were present and if the house had: a roof of thatch rather than of tiles or tin; a thatched roof which had not been treated with insecticide; relatively more holes in walls and roof. The sex ratio of flies was more male‐biased at higher densities. We weigh the importance of these variables as risk factors for Le.chagasi infection.