Effectiveness of the parasitoid Anisopteromalus calandrae (Hymenoptera : Pteromalidae) in the control of Sitophilus zeamais and Rhyzopertha dominica in paddy rice
del Arco, Lidia (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)
Riudavets Muñoz, Jordi (Institut de Recerca i Tecnologia Agroalimentàries. Sustainable Plant Protection)
Campos-Rivela, José Miguel (Institut de Recerca i Tecnologia Agroalimentàries. Sustainable Plant Protection)
Martínez-Ferrer, María Teresa (Institut de Recerca i Tecnologia Agroalimentàries. Sustainable Plant Protection)
Agustí, Núria (Institut de Recerca i Tecnologia Agroalimentàries. Sustainable Plant Protection)
Castañé, Cristina (Institut de Recerca i Tecnologia Agroalimentàries. Sustainable Plant Protection)

Date:	2023
Abstract:	Rice is an important cereal crop in Spain that is frequently attacked by pests that cause significant quantitative and qualitative losses. Among them, the maize weevil, Sitophilus zeamais, is the key pest, and the lesser grain borer, Rhyzopertha dominica, is a serious pest found later in the season. The cosmopolitan ectoparasitoid, Anisopteromalus calandrae, which attacks late-instar larvae of coleopterans that develop inside grain kernels, has been reported as an efficient natural enemy. In this study, we evaluated whether the control efficacy of this parasitoid on S. zeamais was affected by the presence of the alternative host, R. dominica. Our laboratory experiment demonstrated the parasitoid preference for S. zeamais larvae when mixed with R. dominica larvae at different proportions. This preference for the maize weevil larvae allowed us to maintain a similar control efficacy of S. zeamais when it was offered alone than when it was offered together with R. dominica larvae. In our second experiment, done in 500 kg bags of paddy rice, similar results were obtained, since the presence of R. dominica larvae did not alter the control efficacy of A. calandrae on S. zeamais larvae. Therefore, our results confirmed a good perspective for implementing the use of this natural enemy as a control tool in big bags of paddy rice.
Grants:	Ministerio de Ciencia e Innovación PRE2019-087497 Agència de Gestió d'Ajuts Universitaris i de Recerca PRE2019-087497 Ministerio de Economía y Competitividad RTI2018- 095526-R-100
Note:	Altres ajuts: acords transformatius de la UAB
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Biological control ; Ectoparasitoid ; Grain weevil ; Grain borer ; Stored grain
Published in:	Biological control, Vol. 181 (june 2023) , p. 105216, ISSN 1090-2112

DOI: 10.1016/j.biocontrol.2023.105216

8 p, 1.5 MB

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