Ocurrencia de parasitismo de enemigos naturales de la cochinilla algodonosa (Hemíptera: sternorryncha) en plantas ornamentales de la zona urbana del cantón Guayaquil
Fecha
2022
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Universidad de Guayaquil : Facultad de Ciencias Agrarias
Resumen
La cochinilla algodonosa es la más extensa y dañina de toda la familia Pseudococcoidae, su amplio rango de hospedadores incluye árboles frutales y especies ornamentales. Esta plaga afecta todas las estructuras de la planta, siendo responsable de graves problemas fitosanitarios. Este trabajo se realizó en diferentes localidades de Guayaquil con el objetivo de determinar la ocurrencia de parasitismos de enemigos naturales de la cochinilla algodonosa (Hemíptera: Sternorryncha) en plantas ornamentales y frutales. El tipo de metodología que se utilizó fue la recolección de muestras de material vegetativo afectado por cochinillas, fueron colocadas en frascos trasparentes, transcurrido cinco días se observó la emergencia de los especímenes que fueron colocados en tubos de ensayo con alcohol al 70%. Las muestras fueron llevadas al laboratorio de Entomología donde se realizaron montajes para la identificación de enemigos naturales y evaluación del porcentaje de parasitismo. Se identificó a Brethesiella sp como parasitoide de Crypticerya multcicatrices.
The cottony cushion mealybug is the most widespread and damaging of the entire Pseudococcoidae family, its wide range of hosts includes fruit tree and ornamental species. However, this pest affects all plant structures and responsible for serious health problems. This work was in different locations of Guayaquil in urban areas with the objective of determining the occurrence of parasitism of natural enemies of the cottony mealybug (Hemiptera: Sternorryncha) in ornamental and fruit plants. With the collection of samples of vegetative material affected by mealybugs in various sectors of the canton. They were placed in transparent jars. The emergence of the specimens that were placed in test tubes with 70% alcohol. These samples were taken to the Entomology laboratory where mounts were made for the identification of natural enemies and the percentage of parasitism was. In all the samples, Brethesiella sp was identified as a parasitoid of Crypticerya multcicatrices.
The cottony cushion mealybug is the most widespread and damaging of the entire Pseudococcoidae family, its wide range of hosts includes fruit tree and ornamental species. However, this pest affects all plant structures and responsible for serious health problems. This work was in different locations of Guayaquil in urban areas with the objective of determining the occurrence of parasitism of natural enemies of the cottony mealybug (Hemiptera: Sternorryncha) in ornamental and fruit plants. With the collection of samples of vegetative material affected by mealybugs in various sectors of the canton. They were placed in transparent jars. The emergence of the specimens that were placed in test tubes with 70% alcohol. These samples were taken to the Entomology laboratory where mounts were made for the identification of natural enemies and the percentage of parasitism was. In all the samples, Brethesiella sp was identified as a parasitoid of Crypticerya multcicatrices.
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Palabras clave
Cochinilla algodonosa, Enemigos naturales, Parasitismo, Plantas Ornamentales, Crypticerya multcicatrices, Brethesiella sp.
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APA