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https://dx.doi.org/10.29352/mi...
Article . 2021
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Biological control of dryocosmus kuriphilus yasumatsu with the parasitoid torymus sinensis Kamijo

Control biológico de dryocosmus kuriphilus yasumatsu con el parasitoide torymus sinensis Kamijo
Authors: Cardoso, João; Almeida, Maria Teresa; Bento, Albino;

Biological control of dryocosmus kuriphilus yasumatsu with the parasitoid torymus sinensis Kamijo

Abstract

Introducción: La avispilla del castaño Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae) es un insecto inductor de agallas original de China que ataca al género Castanea y puede causar pérdidas significativas en la producción de castañas. El método de biocontrol más eficaz y utilizado se basa en las liberaciones de Torymus sinensis Kamijo (Hymenoptera: Torymidae), un parasitoide específico de D. kuriphilus y nativo en su hábitat original (China). Objetivo: Avaluar la capacidad de T. sinensis para establecer una población, su capacidad de dispersión y el efecto de la densidad de liberación en las poblaciones de D. kuriphilus en la región portuguesa del Minho. Métodos: Se realizaron tres liberaciones de T. sinensis en tres sitios de los condados de Barcelos y Viana do Castelo. Resultados: La presencia de T. sinensis se encontró en los tres sitios un año después de las sueltas y en dos sitios, dos años después de las sueltas. También observamos la presencia de T. sinensis a 200 metros del punto de suelta, lo que revela su capacidad de dispersión. Conclusión: Las tasas de parasitismo estuvieron entre el 1.3% y el 3.9% en el primer año, y entre el 0.8% y el 13% en el segundo año, lo que está en línea con lo mencionado en la bibliografía internacional.

Introdução: A vespa-das-galhas-do-castanheiro, Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae), é um inseto indutor de galhas originário da China que ataca espécies do género Castanea e que pode causar prejuízos significativos na produção de castanha. O método de controlo mais usado e eficaz é baseado em largadas de Torymus sinensis Kamijo (Hymenoptera: Torymidae), um parasitoide específico de D. kuriphilus e autóctone no seu habitat de origem (China). Objetivo: Estudar a capacidade de T. sinensis estabelecer uma população, a sua capacidade de dispersão e o efeito da densidade de largada nas populações de D. kuriphilus existentes na região portuguesa do Minho. Métodos: Foram realizadas largadas de T. sinensis em três locais distintos nos concelhos de Barcelos e Viana do Castelo. Resultados: Registou-se a presença de T. sinensis nos três locais um ano após as largadas e em dois locais, dois anos após as largadas. Observamos igualmente a presença de T. sinensis a 200 metros do ponto de largada, o que revela a sua capacidade de dispersão. Conclusão: As taxas de parasitismo situaram-se entre 1.3% e 3.9% no primeiro ano, e 0.8% e 13% no segundo ano, valores concordantes com o referido na bibliografia internacional.

Introduction: The chestnut gall wasp, Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae), is a gall inducing insect original from China that attacks the Castanea genus and can significantly hinder production of chestnut trees. The most effective and used method of control of D. kuriphilus is based on the releases of Torymus sinensis Kamijo (Hymenoptera: Torymidae), a specific parasitoid of D. kuriphilus and native in its natural habitat of origin (China). Objectives: To evaluate T. sinensis ability to establish a population, its dispersion ability and the effect of the release density on the populations of D. kuriphilus in the Portuguese region of Minho. Methods: T. sinensis releases were made in three sites in the Barcelos and Viana do Castelo counties. Results: The presence of T. sinensis was found in three sites of release one year after the releases and in two sites two years after the releases. Presence of T. sinensis was also found at 200 meters distance from the release sites. Conclusion: The average parasitism rates found due to T. sinensis were between 1.3% and 3.9% in the first year, and 0.8% and 13% in the second year, which are within the range described in the international literature.

Country
Portugal
Keywords

LC8-6691, tasa de parasitismo, Dryocosmus kuriphilus, biological control, parasitism rate, Special aspects of education, invasive species, controlo biológico, especies invasivas, Castanea, Public aspects of medicine, RA1-1270, control biológico, espécies invasoras, taxa de parasitismo

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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