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Attraction of Three Mirid Predators to Tomato Infested by Both the Tomato Leaf Mining Moth Tuta absoluta and the Whitefly Bemisia tabaci.
Silva, Diego B; Bueno, Vanda H P; Van Loon, Joop J A; Peñaflor, Maria Fernanda G V; Bento, José Maurício S; Van Lenteren, Joop C.
Afiliação
  • Silva DB; Department of Entomology, Federal University of Lavras (UFLA), P.O.Box 3037, Lavras, MG, 37200-000, Brazil.
  • Bueno VHP; Luiz de Queiroz College of Agriculture (USP/ESALQ), Department of Entomology and Acarology, University of Sao Paulo, P.O. Box 9, Piracicaba, SP, 13418-900, Brazil.
  • Van Loon JJA; Department of Entomology, Federal University of Lavras (UFLA), P.O.Box 3037, Lavras, MG, 37200-000, Brazil. vhpbueno@den.ufla.br.
  • Peñaflor MFGV; Luiz de Queiroz College of Agriculture (USP/ESALQ), Department of Entomology and Acarology, University of Sao Paulo, P.O. Box 9, Piracicaba, SP, 13418-900, Brazil. vhpbueno@den.ufla.br.
  • Bento JMS; Laboratory of Entomology, Wageningen University, P.O. Box 16, 6700 AA, Wageningen, The Netherlands.
  • Van Lenteren JC; Department of Entomology, Federal University of Lavras (UFLA), P.O.Box 3037, Lavras, MG, 37200-000, Brazil.
J Chem Ecol ; 44(1): 29-39, 2018 Jan.
Article em En | MEDLINE | ID: mdl-29177897
Plants emit volatile compounds in response to insect herbivory, which may play multiple roles as defensive compounds and mediators of interactions with other plants, microorganisms and animals. Herbivore-induced plant volatiles (HIPVs) may act as indirect plant defenses by attracting natural enemies of the attacking herbivore. We report here the first evidence of the attraction of three Neotropical mirid predators (Macrolophus basicornis, Engytatus varians and Campyloneuropsis infumatus) toward plants emitting volatiles induced upon feeding by two tomato pests, the leaf miner Tuta absoluta and the phloem feeder Bemisia tabaci, in olfactometer bioassays. Subsequently, we compared the composition of volatile blends emitted by insect-infested tomato plants by collecting headspace samples and analyzing them with GC-FID and GC-MS. Egg deposition by T. absoluta did not make tomato plants more attractive to the mirid predators than uninfested tomato plants. Macrolophus basicornis is attracted to tomato plants infested with either T. absoluta larvae or by a mixture of B. tabaci eggs, nymphs and adults. Engytatus varians and C. infumatus responded to volatile blends released by tomato plants infested with T. absoluta larvae over uninfested plants. Also, multiple herbivory by T. absoluta and B. tabaci did not increase the attraction of the mirids compared to infestation with T. absoluta alone. Terpenoids represented the most important class of compounds in the volatile blends and there were significant differences between the volatile blends emitted by tomato plants in response to attack by T. absoluta, B. tabaci, or by both insects. We, therefore, conclude that all three mirids use tomato plant volatiles to find T. absoluta larvae. Multiple herbivory did neither increase, nor decrease attraction of C. infumatus, E. varians and M. basicornis. By breeding for higher rates of emission of selected terpenes, increased attractiveness of tomato plants to natural enemies may improve the effectiveness of biological control.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solanum lycopersicum / Heterópteros / Mariposas Limite: Animals Idioma: En Revista: J Chem Ecol Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solanum lycopersicum / Heterópteros / Mariposas Limite: Animals Idioma: En Revista: J Chem Ecol Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos