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Título: | Comparative host suitability of some Brassica cultivars for the whitefly, Aleyrodes proletella (Homoptera: Aleyrodidae) |
Autor: | Nebreda, Miguel; Nombela, Gloria CSIC ORCID; Muñiz, Mariano CSIC | Palabras clave: | Aleyrodes proletella Brassicas Host preference development and reproduction |
Fecha de publicación: | 2005 | Citación: | Environmental Entomology 34(1): 205-209 | Resumen: | Four cultivars of broccoli Brassica oleracea L. var. italica Plenck, two cultivars of early cauliflower Brassica oleracea L. var. botrytis L., four cultivars of late cauliflower Brassica oleracea L. var. botrytis L. and one cultivar of red cabbage Brassica oleracea L. var. capitata L. were screened to determine some reproductive parameters of Aleyrodes proletella (Linnaeus, 1758) in a no-choice assay. The highest and lowest fecundity (eggs) and fertility (pupae and adults) were obtained with late cauliflower (cultivar Picasso) and red cabbage (cultivar Cabeza negra), respectively. As regards to adult emergence (from egg to adult), the higher percentages were obtained with broccoli (cultivar Chevalier) and late-cauliflower cultivars Mayfair and Picasso, and the lowest value was obtained with the late-cauliflower cultivar Arbon. In choice experiments, A. proletella preferred late-cauliflower cultivar Picasso and broccoli cultivars Agripa and Marathon to red-cabbage cultivar Cabeza negra. Significantly more adults per day, and more pupae and empty pupal cases per plant were found on broccoli and cauliflower cultivars than on red cabbage. At 22 ± 1.5 °C, A. proletella required significantly more days for development on red cabbage than on broccoli and cauliflower cultivars. A. proletella developed significantly faster on early-cauliflower cultivar Matra. These results suggest that it is important to minimize the use of the broccoli cultivars Chevalier and Agripa and the late-cauliflower cultivar Picasso in order to avoid the risk of further expansion of whitefly populations where these brassica crops and A. proletella are present. | URI: | http://hdl.handle.net/10261/11498 |
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Aleyrodes proletella-brassica Envir. Entomol..pdf | 79,18 kB | Adobe PDF | Visualizar/Abrir |
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