| Title: | A parasitoid's dilemma between food and host resources: the role of volatiles from nectar-providing marigolds and host-infested plants attracting Aphidius platensis |
| Author(s): | Souza IL; Silva DB; Silveira LCP; Bento JMS; Penaflor M; Marucci RC; |
| Address: | "Department of Entomology, Federal University of Lavras (UFLA), P.O. Box 3037, Lavras, MG, 37200-000, Brazil. ilemossouza@gmail.com. Department of Entomology and Acarology, University of Sao Paulo (USP), Luiz de Queiroz College of Agriculture (ESALQ), P.O. Box 9, Piracicaba, SP, 13418 900, Brazil. Department of Entomology, Federal University of Lavras (UFLA), P.O. Box 3037, Lavras, MG, 37200-000, Brazil" |
| DOI: | 10.1007/s00114-021-01780-8 |
| ISSN/ISBN: | 1432-1904 (Electronic) 0028-1042 (Linking) |
| Abstract: | "The use of nectar-producing companion plants in crops is a well-known strategy of conserving natural enemies in biological control. However, the role of floral volatiles in attracting parasitoids and effects on host location via herbivore-induced plant volatiles is poorly known. Here, we examined the role of floral volatiles from marigold (Tagetes erecta), alone or in combination with volatiles from sweet pepper plant (Capsicum annuum), in recruiting Aphidius platensis, an important parasitoid of the green peach aphid Myzus persicae. We also investigated whether marigold floral volatiles are more attractive to the parasitoid than those emitted by sweet pepper plants infested by M. persicae. Olfactometry assays indicated that floral volatiles attracted A. platensis to the marigold plant and are more attractive than sweet pepper plant volatiles. However, volatiles emitted by aphid-infested sweet pepper were as attractive to the parasitoid as those of uninfested or aphid-infested blooming marigold. The composition of volatile blends released by uninfested and aphid-infested plants differed between both blooming marigold and sweet pepper, but the parasitoid did not discriminate aphid-infested from uninfested blooming marigold. Volatile released from blooming marigold and sweet pepper shared several compounds, but that of blooming marigold contained larger amounts of fatty-acid derivatives and a different composition of terpenes. We discuss the potential implications of the aphid parasitoid attraction in a diversified crop management strategy" |
| Keywords: | Animals *Aphids Herbivory Host-Parasite Interactions *Hymenoptera Plant Nectar *Tagetes *Volatile Organic Compounds Companion plants Conservation biological control Floral fragrance Herbivore-induced plant volatiles; |
| Notes: | "MedlineSouza, Ivana Lemos Silva, Diego Bastos Silveira, Luis Claudio Paterno Bento, Jose Mauricio Simoes Penaflor, Maria Fernanda Gomes Villalba Marucci, Rosangela Cristina eng 2014/50871-0/Fundacao de Amparo a Pesquisa do Estado de Sao Paulo/ 2016/12771-0/Fundacao de Amparo a Pesquisa do Estado de Sao Paulo/ 465511/2014-7/Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/ 1416746/Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior/ Germany 2021/12/17 Naturwissenschaften. 2021 Dec 16; 109(1):9. doi: 10.1007/s00114-021-01780-8" |
