Attraction of Aphidius ervi (Hymenoptera: Braconidae) and Aphidoletes aphidimyza (Diptera: Cecidomyiidae) to Sweet Alyssum and Assessment of Plant Resources Effects on their Fitness
Visualitza/Obre
Autor/a
Aparicio, Yahana
Gabarra, Rosa
Arnó, Judit
Data de publicació
2018-01-20ISSN
0022-0493
Resum
The green peach aphid Myzus persicae (Sulzer) (Hemiptera: Aphididae) is one of the most economically important aphid species affecting crops worldwide. Since many natural enemies of this aphid have been recorded, biological control of this pest might be a viable alternative to manage it. Selected plant species in field margins might help to provide the natural enemies with food sources to enhance their fitness. This study aimed to investigate if sweet alyssum, Lobularia maritima (L.) (Brassicaceae), is a potential food source for the parasitoid Aphidius ervi Haliday (Hymenoptera: Braconidae) and the predator Aphidoletes aphidimyza (Rondani) (Diptera: Cecidomyiidae), and whether this flower could contribute to enhance the biological control of M. persicae. Volatiles produced by alyssum, with and without flowers, attracted both natural enemies. This attractiveness to alyssum flowers was disrupted when compared with peach shoots recently infested with a relatively low number of aphids. When aphids were absent, parasitoids exposed to alyssum survived longer than those that fed on a sugar solution or on water. In the case of the predator, alyssum flowers did not benefit longevity since the nectaries were inaccessible to females. However, our results provide evidence that A. aphidimyza would be able to feed on nectar if accessible. The floral resource did not improve the reproductive capacity of the two natural enemies, but the 10% sugar solution increased the egg load of the predator. Provision of other sugar resources, such as flowers with exposed nectaries and extra floral nectar may also be a viable option to improve the biological control of M. persicae.
Tipus de document
Article
Versió del document
Versió acceptada
Llengua
English
Matèries (CDU)
632 - Malalties i protecció de les plantes
Pàgines
40
Publicat per
Oxford University Press
Publicat a
Journal of Economic Entomology
Citació
Aparicio, Y., Gabarra, R., & Arnó, J. 2018. "Attraction of Aphidius ervi (Hymenoptera: Braconidae) and Aphidoletes aphidimyza (Diptera: Cecidomyiidae) to Sweet Alyssum and Assessment of Plant Resources Effects on their Fitness". Journal Of Economic Entomology, 111(2), 533-541. doi:10.1093/jee/tox365
Número de l'acord de la subvenció
MINECO/Programa Estatal de fomento de la investigación científica y técnica de excelencia/AGL2013-49164-C2-2-R/ES/Control Integrado de Plagas en Cultivos Hortofrutícolas/
MINECO/Programa Estatal de I+D+I orientada a los retos de la sociedad/AGL2016-77373-C2-1-R/ES/Avances en el control intregrado de plagas en cultivos hortofrutícolas: mejora del control biológico por conservación en hortícolas y frutales/CIPTOOLS
Programa
Protecció Vegetal Sostenible
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