Spatial distribution of the larval indices of Aedes aegypti in Guadalupe, Nuevo León, Mexico, with circular distribution analysis

Mercado Hernández, Roberto y Fernández Salas, Ildefonso y Villarreal Martínez, Homero Fernando (2003) Spatial distribution of the larval indices of Aedes aegypti in Guadalupe, Nuevo León, Mexico, with circular distribution analysis. Journal of the American Mosquito Control Association, 19 (1). pp. 15-18. ISSN 8756-971X

Vista previa

Download (356kB) | Vista previa


A census of all outdoor larval breeding sites (951) present in 361 dwellings in a neighborhood of Guadalupe in northeastern Mexico was conducted in October 1997 to determine larval indices of Aedes aegypti, and their relationship to human population density and vegetation type. Here we present a method that allows finding the direction and extrapolar flight range of vectors, as parameters in the dynamics of dengue transmission. By using circular statistics applied to each block of data, ranges (quartiles) were computed for larval index type, adult-child (a/c) relationship, and vegetation. Eight angles between 37 and 300 degrees were used. Circular distribution was determined by using mean angle (a) and argument (r) from the sum of ranges for each variable. Arguments corresponding to the mean angle of house (260 degrees), recipient (265 degrees), and Breteau (247 degrees) indices were 0.2321, 0.2331, and 0.2225, respectively. In addition, arguments for the mean angle of herbaceous (277 degrees), shrub (318 degrees), and arboreal (333 degrees) vegetation were 0.2589, 0.1984, and 0.2367, respectively, and the 3 were located in the 4th quadrant. The a/c relationship was in 282 degrees, with an argument of 0.2466, which indicates that in this neighborhood in southern Guadalupe, both the human population density and the larval indices were higher than in other areas.

Tipo de elemento: Article
Materias: ?? QH301 ??
Divisiones: Ciencias Biológicas
Usuario depositante: Admin Eprints
Fernández Salas, Ildefonsoifernand@hotmail.comNO ESPECIFICADO
Villarreal Martínez, Homero FernandoNO ESPECIFICADONO ESPECIFICADO
Fecha del depósito: 27 Ene 2011 21:49
Última modificación: 27 Nov 2014 04:34

Actions (login required)

Ver elemento Ver elemento


Downloads per month over past year