Lutzomyia longipalpis abundance in the city of Posadas, northeastern Argentina: variations at different spatial scales
Mem. Inst. Oswaldo Cruz
;
107(6): 767-771, set. 2012. tab
Article
Dans Anglais
| LILACS
| ID: lil-649492
ABSTRACT
The distribution of Lutzomyia longipalpis is heterogeneous with a pattern of high abundance areas (HAAs) embedded in a matrix of low abundance areas (LAAs). The objective of this study was to describe the variability in the abundance of Lu. longipalpis at two different spatial levels and to analyse the relationship between the abundance and multiple environmental variables. Of the environmental variables analysed in each household, the condition that best explained the differences in vector abundance between HAA-LAA was the variable "land_grass", with greater average values in the peridomestic environments within the LAA, and the variables "#sp tree", "#pots" and "dist_water" that were higher in the HAA. Of the environmental variables analysed in the patches, the variable "unpaved_streets" was higher in the LAAs and the variable "prop_inf_dogs" was higher in the HAAs. An understanding of the main environmental variables that influence the vector distribution could contribute to the development of strategies for the prevention and control of visceral leishmaniasis (VL). This is the first work in which environmental variables are analysed at the micro-scale in urban areas at the southern edge of the current range of Lu. longipalpis. Our results represent a significant contribution to the understanding of the abundance of the vector in the peridomestic habitats of the region.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Psychodidae
/
Écosystème
/
Vecteurs insectes
Limites du sujet:
Animaux
Pays comme sujet:
Amérique du Sud
/
Argentine
langue:
Anglais
Texte intégral:
Mem. Inst. Oswaldo Cruz
Thème du journal:
Médecine tropicale
/
Parasitologie
Année:
2012
Type:
Article
Pays d'affiliation:
Argentine
Institution/Pays d'affiliation:
Centro Nacional de Diagnóstico e Investigaciones Endemo-epidemicas/AR
/
Consejo Nacional de Investigaciones Científicas y Técnicas/AR
/
Instituto Municipal de Vigilancia y Control de Vectores/AR
/
Universidad de Buenos Aires/AR
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