Contribución del paisaje a la atracción de enemigos naturales para el control biológico en el olivar
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2024-01-15
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Jaén: Universidad de Jaén
Resumen
En este trabajo se ha estudiado la influencia de los hábitats seminaturales en la abundancia
de enemigos naturales para el control natural de Prays oleae. Para ello se seleccionaron 15 parcelas
de olivar en la provincia de Granada (Íllora, Montefrío y Moclín), sobre las cuales se llevó a cabo la
captura de artrópodos mediante la aspiración de la copa de 5 olivos por parcela y el muestreo de la
infestación de P. oleae en la generación antófaga y carpófaga. Además, se realizaron tres muestreos
fitosociológicos de la flora y vegetación a 250m, 500m y 1000m de distancia del centro de cada
parcela. Los resultados han mostrado una mayor cantidad de huevos depredados en la generación
carpófaga que antófaga, además la abundancia de enemigos naturales se ha visto favorecida por una
mayor proporción de hábitats seminaturales alrededor de la parcela.
In this work, the influence of semi-natural habitats on the abundance of natural enemies for the natural control of Prays oleae was studied. For this purpose, 15 olive grove plots were selected in the province of Granada (Íllora, Montefrío and Moclín), on which arthropod capture was carried out by means of canopy aspiration of 5 olive trees per plot and sampling of P. oleae infestation in the anophagous and carpophagous generation. In addition, three phytosociological samplings of flora and vegetation were carried out at 250m, 500m and 1000m distance from the center of each plot. The results have shown a greater number of eggs predated in the carpophagous generation than in the anophagous generation, and the abundance of natural enemies has been favored by a greater proportion of semi-natural habitats around the plot.
In this work, the influence of semi-natural habitats on the abundance of natural enemies for the natural control of Prays oleae was studied. For this purpose, 15 olive grove plots were selected in the province of Granada (Íllora, Montefrío and Moclín), on which arthropod capture was carried out by means of canopy aspiration of 5 olive trees per plot and sampling of P. oleae infestation in the anophagous and carpophagous generation. In addition, three phytosociological samplings of flora and vegetation were carried out at 250m, 500m and 1000m distance from the center of each plot. The results have shown a greater number of eggs predated in the carpophagous generation than in the anophagous generation, and the abundance of natural enemies has been favored by a greater proportion of semi-natural habitats around the plot.