Escolitidos asociados en árboles de Tectona grandis L. f. (teca) enfermos con marchitez vascular y muerte regresiva en la Provincia del Guayas, año 2018.

The present research was carried out in three sites of the Canton Balzar Province of Guayas, the objectives of the investigation were to identify and to determine the diversity of insects Scolytinae in trees sick of teak with withered vascular and regressive death, and to establish the incidence and...

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Detalhes bibliográficos
Autor principal: Rojas Chapin, Julio Daniel. (author)
Formato: bachelorThesis
Idioma:spa
Publicado em: 2018
Assuntos:
Acesso em linha:http://repositorio.uteq.edu.ec/handle/43000/3038
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Resumo:The present research was carried out in three sites of the Canton Balzar Province of Guayas, the objectives of the investigation were to identify and to determine the diversity of insects Scolytinae in trees sick of teak with withered vascular and regressive death, and to establish the incidence and severity of damage in trees with the aforementioned diseases. Plots of 500 m2 were established where a census was made to determine apparently healthy and diseased trees, for the collection of the Escolitidos trees with different degrees of symptomatology were selected, they were cut every four meters to detect Galleries or sawdust. In all three sites a total of 1865 individuals were collected, of which 1101 corresponds to the hacienda La Mont, 504 to the hacienda la Santa Rosa and 260 to the hacienda la Valentina, two tribes were presented La Xyleborini and the Ipini being the tribe Xyleborini the most abundant. The X. ferrugineus was the species that was present in the three haciendas, followed by X. volvulus that was presented at the hacienda la Mont and Santa Rosa respectively, on the other hand P. cavipennis was only presented at the hacienda la Santa Rosa and the Coptoborus sp, and they only showed up at the hacienda la Mont. The hacienda la Mont was the place that increased incidence with a value of 29.2% while the severity that could be observed within the three hacienda was in the terminal sheets where they were tornado in a clorótica way being category 2 within the arbitrary scale, at the same time the Dasométricas variables were presented of for the most part in a homogeneous way