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Predictions of adult anopheles albimanus densities in villages based on distances to remotely sensed larval habitats
Am J Trop Med Hyg ; 53(5): 482-8, 1995. ilus, maps, tab
Artigo em Inglês | MedCarib | ID: med-3601
Biblioteca responsável: JM3.1
Localização: JM3.1; RC960.A4
ABSTRACT
Remote sensing is particularly helpful for assessing the location and extent of vegetation formations such as herbaceous wetlands, that are difficult to examine on the ground. Marshes that are sparsely populated with emergent macrophytes and dense cyanobacterial mats have previously been identified as very productive Anopheles albimanus larval habitats. This type of habitat was detectable on a classified multispectral Systeme Probatoire d'Observation de la Terre image of northern Belize as a mixture of two isoclasses. A similar spectral signature is characteristic for vegetation of river margins consisting of aquatic grasses and water hyacinth, which constitutes another larval habitat. Based on the distance between human settlements (sites) of various sizes and the nearest marsh/river exhibiting this particular class combination, we selected two groups of sites those located closer than 500 m and those located more than 1,500 m from such habitats. Based on previous adult collections near larval habitats, we defined a landing rate of 0.5 mosquitoes/human/min from 630 p.m. to 800 p.m. as the threshold for high (o 0.5 mosquitoes/human/min) versus low (< 0.5 mosquitoes/human/min) densities of An. albimanus. Sites located less than 500 m from the habitat were predicted as having values higher than this threshold, while lower values were predicted for sites located greater that 1,500 m from the habitat. Predictions were verified by collections of mosquitoes landing on humans. The predictions were 100 percent accurate for the sites in the > 1,500-m category and 89 percent accurate for sites in the > 500-m category(AU)
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Coleções: Bases de dados internacionais Contexto em Saúde: ODS3 - Saúde e Bem-Estar / Doenças Negligenciadas Problema de saúde: Meta 3.3: Acabar com as doenças tropicais negligenciadas e combater as doenças transmissíveis / Malária / Doenças Negligenciadas Base de dados: MedCarib Assunto principal: Insetos Vetores / Anopheles Tipo de estudo: Estudo prognóstico / Fatores de risco Limite: Humanos País/Região como assunto: América Central / Belize / Caribe Inglês Idioma: Inglês Revista: Am J Trop Med Hyg Ano de publicação: 1995 Tipo de documento: Artigo
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Coleções: Bases de dados internacionais Contexto em Saúde: ODS3 - Saúde e Bem-Estar / Doenças Negligenciadas Problema de saúde: Meta 3.3: Acabar com as doenças tropicais negligenciadas e combater as doenças transmissíveis / Malária / Doenças Negligenciadas Base de dados: MedCarib Assunto principal: Insetos Vetores / Anopheles Tipo de estudo: Estudo prognóstico / Fatores de risco Limite: Humanos País/Região como assunto: América Central / Belize / Caribe Inglês Idioma: Inglês Revista: Am J Trop Med Hyg Ano de publicação: 1995 Tipo de documento: Artigo
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