Prevalencia del nematodo Angiostrongylus cantonensis en el huésped intermediario caracol gigante africano (Achatina fulica), en el período 2012 y 2013 en varios sectores de la ciudad de Guayaquil, Ecuador
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2014
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Universidad de Guayaquil; Facultad de Ciencias Naturales
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La presente investigación trata sobre la prevalencia del Angiostrongylus cantonensis en caracol gigante africano (Achatina fulica), en el 2012-2013. Para ello se analizaron 806 caracoles durante los años 2012 y 2013 en el Laboratorio del Sub-Proceso de Parasitología del “Instituto Nacional de Investigación en Salud Pública” (INSPI) de la ciudad de Guayaquil. Estas muestras fueron analizadas en función de su prevalencia en los diferentes 28 sectores de la urbe.
En el año 2012 se recolectaron y se diseccionaron 600 caracoles (Achatina fulica), de los cuales cuarenta y ocho (48), que equivalen al 8%, resultaron positivos para Angiostrongylus cantonensis.
En el año 2013 se recolectaron y diseccionaron (206) doscientos seis caracoles (Achatina fulica), de los cuales, sólo 8, que equivalen al 4%, resultaron positivos para Angiostrongylus cantonensis.
El año 2012 se obtuvieron mayores resultados en los meses de lluvia (enero a mayo) que en los meses secos (junio a noviembre) con una prevalencia de 8% para A. cantonensis; en cambio en el 2013 se obtuvo menor número de individuos a lo largo del año (enero a octubre), con una prevalencia de 4% de positividad para dicho parásito. En los sectores norte: Cdla. Miraflores y Cdla. La Kennedy se encontraron, en el mes de marzo de ambos años (2012-2013), gran cantidad de caracoles positivos para A. cantonensis de manera coincidente. Demostrando la dependencia y existencia del parásito A. cantonensis con el caracol Achatina fulica, quien depende a su vez, de la influencia de los meses lluviosos
This research is about Angiostrongylus cantonensis nematode prevalence in African giant snail intermediate host (Achatina fulica), from 2012 to 2013 in Guayaquil, Ecuador. 806 snails were analyzed between 2012 and 2013 in the Laboratory of Parasitology Sub - Process "National Institute of Public Health Research" (INSPI) of the city of Guayaquil. These samples were analyzed according to their prevalence in 28 different areas of the city. In 2012,600 (six hundred) snails were collected and disseded (Achatina fulica), of which forty -eight (48), equivalent to 8 % dissected, tested positive for Angiostrongylus cantonensis. In 2013,206 (two hundred and six) snails were collected and dissected (Achatina fulica), of which only 8, or 4%, were positive for Angiostrongylus cantonensis. The 2012 results were higher in the rainy season (January to May) than in the dry season (June to November) with a prevalence of 0.08 for A. cantonensis; whereas in 2013 fewer organism was obtained throughout the year (January to October), with a prevalence of 0.04 for the parasite positivity. In the northern sectors: Cdla. Miraflores and Cdla. La Kennedy were found in March of both years (2012-2013), large numbers of snails positive for A. cantonensis coincidentally. Proving the existence of dependence and A. cantonensis parasite with Achatina fulica snail, who is in turn, the influence of the rainy months
This research is about Angiostrongylus cantonensis nematode prevalence in African giant snail intermediate host (Achatina fulica), from 2012 to 2013 in Guayaquil, Ecuador. 806 snails were analyzed between 2012 and 2013 in the Laboratory of Parasitology Sub - Process "National Institute of Public Health Research" (INSPI) of the city of Guayaquil. These samples were analyzed according to their prevalence in 28 different areas of the city. In 2012,600 (six hundred) snails were collected and disseded (Achatina fulica), of which forty -eight (48), equivalent to 8 % dissected, tested positive for Angiostrongylus cantonensis. In 2013,206 (two hundred and six) snails were collected and dissected (Achatina fulica), of which only 8, or 4%, were positive for Angiostrongylus cantonensis. The 2012 results were higher in the rainy season (January to May) than in the dry season (June to November) with a prevalence of 0.08 for A. cantonensis; whereas in 2013 fewer organism was obtained throughout the year (January to October), with a prevalence of 0.04 for the parasite positivity. In the northern sectors: Cdla. Miraflores and Cdla. La Kennedy were found in March of both years (2012-2013), large numbers of snails positive for A. cantonensis coincidentally. Proving the existence of dependence and A. cantonensis parasite with Achatina fulica snail, who is in turn, the influence of the rainy months
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ANGIOSTRONGYLUS (A) CANTONENSIS, ACHATINA FULICA, PREVALENCIA, POSITIVIDAD, NEMATODO