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Título
Control of egg and neonate larvae of Xylotrechus arvicola (Coleoptera: Cerambycidae), a new vineyard pest, under laboratory conditions
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Australian Journal of Grape and Wine Research
Número de la revista
1
Cita Bibliográfica
Rodríguez-González, Peláez, González-Núñez, & Casquero. (2017). Control of egg and neonate larvae of Xylotrechus arvicola (Coleoptera: Cerambycidae), a new vineyard pest, under laboratory conditions. Australian Journal of Grape and Wine Research, 23(1), 112-119. https://doi.org/10.1111/AJGW.12259
Editorial
Australian Society of Viticulture and Oenology
Fecha
2017
ISSN
1322-7130
Resumen
[EN] Background andAims: Xylotrechus arvicola (Coleoptera: Cerambycidae) is a newvineyard pest. Six insecticideswere tested on X.
arvicola eggs arranged in Petri dishes and in two parts of the vine: branch and trunk.
Method and Results: According to the Abbott formula, on Petri dishes, chlorpyrifos had total ovicidal control, significantly
different from that of pyriproxyfen (88.3%), Beauveria bassiana (84.3%) and imidacloprid (80.9%). On branches, chlorpyrifos
(91.6%), pyriproxyfen (79.1%) and flufenoxuron (75.0%) showed improved toxic effect, and on trunks, chlorpyrifos
(83.3%) gave the best control, significantly different from that of imidacloprid (50.0%), pyriproxyfen (45.8%) and
flufenoxuron (37.5%). Larval mortality was registered from the seventh to the fourteenth day after treatment: spinosad
(50.0%), imidacloprid (45.8%) and B. bassiana (33.3%) were the insecticides that showed greater larval mortality on branches.
These insecticides also showed greater larval mortality on trunks, but only B. bassiana (50.0%) had a greater residual effect on
trunks than on branches.
Conclusions: All insecticides evaluated gave better ovicidal control when applied directly on Petri dishes than when applied on
branches and trunks, where all insecticides (except chlorpyrifos and imidacloprid) show greater toxic effect when applied on
branches. Spinosad and B. bassiana have the best larval residual mortality, when applied, respectively, on branches and on trunks.
Significance of the Study: Beauveria bassiana is the best insecticide with residual effect on neonate larvae on trunks, where the
greater thickness of the rhytidome and cracks favoured the development of this fungus to invade actively the larvae through their
shell and proliferate inside.
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