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Kishani Farahani H, Moghadassi Y, Pierre JS, Kraus S, Lihoreau M. Poor adult nutrition impairs learning and memory in a parasitoid wasp. Sci Rep 2021; 11:16220. [PMID: 34376777 PMCID: PMC8355316 DOI: 10.1038/s41598-021-95664-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 07/28/2021] [Indexed: 12/05/2022] Open
Abstract
Animals have evolved cognitive abilities whose impairment can incur dramatic fitness costs. While malnutrition is known to impact brain development and cognitive functions in vertebrates, little is known in insects whose small brain appears particularly vulnerable to environmental stressors. Here, we investigated the influence of diet quality on learning and memory in the parasitoid wasp Venturia canescens. Newly emerged adults were exposed for 24 h to either honey, 20% sucrose solution, 10% sucrose solution, or water, before being conditioned in an olfactory associative learning task in which an odor was associated to a host larvae (reward). Honey fed wasps showed 3.5 times higher learning performances and 1.5 times longer memory retention than wasps fed sucrose solutions or water. Poor diets also reduced longevity and fecundity. Our results demonstrate the importance of early adult nutrition for optimal cognitive function in these parasitoid wasps that must quickly develop long-term olfactory memories for searching suitable hosts for their progeny.
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Affiliation(s)
| | - Yasaman Moghadassi
- Department of Plant Protection, Faculty of Agriculture and Natural Resources, University of Tehran, Karajs, Iran
| | - Jean-Sebastien Pierre
- Rennes 1, UMR-CNRS 6553 EcoBio, University of, Avenue du Général Leclerc, Campus de Beaulieu, 35042, Rennes Cedex, France
| | - Stéphane Kraus
- Research Center On Animal Cognition (CRCA), Center for Integrative Biology (CBI), CNRS, UMR 5169 CNRS, University of Toulouse III, Toulouse, France
| | - Mathieu Lihoreau
- Research Center On Animal Cognition (CRCA), Center for Integrative Biology (CBI), CNRS, UMR 5169 CNRS, University of Toulouse III, Toulouse, France.
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Sampaio MV, Franco GM, Lima DT, Oliveira ARC, Silva PF, Santos ALZ, Resende AVM, Santos FAA, Girão LVC. Plant Silicon Amendment Does Not Reduce Population Growth of Schizaphis graminum or Host Quality for the Parasitoid Lysiphlebus testaceipes. NEOTROPICAL ENTOMOLOGY 2020; 49:745-757. [PMID: 32445112 DOI: 10.1007/s13744-020-00775-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Accepted: 03/25/2020] [Indexed: 06/11/2023]
Abstract
Interactions between different pest control methods can affect Integrated Pest Management efficiency. This study sought to evaluate (1) if Si accumulation is related to the level of constitutive resistance in sorghum genotypes, (2) the level of Si induces resistance by antibiosis in sorghum genotypes with different levels of constitutive resistance to Schizaphis graminum (Rondani) (reared individualized or in colonies), and (3) the fitness of Lysiphlebus testaceipes (Cresson) in aphids reared on Si-treated and untreated plants. Several experiments were conducted under greenhouse conditions, using sorghum genotypes with different levels of resistance grown in pots with or without the addition of Si to the soil. The susceptible (BR007B), moderately resistant (GB3B), and highly resistant (TX430XGR111) genotypes all absorbed more Si when it was added to the soil compared with when it was not amended. However, the final Si content of treated plants was not related to the level of constitutive resistance among treated genotypes. While Si soil application did reduce the fecundity of individualized aphids reared on the susceptible and moderately resistant sorghum plants, it did not reduce populational growth of aphid colonies, independent of the level of plant's constitutive resistance. Parasitoid (L. testaceipes) had higher weight when reared from aphids fed on plants with added Si. Sorghum × constitutive resistance × S. graminum interactions were affected by plant Si content only for individualized aphids but not for aphid colonies. Sorghum × S. graminum × L. testaceipes interactions suggest that Si can have, overall, a positive effect on the biological control of S. graminum.
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Affiliation(s)
- M V Sampaio
- Institute of Agricultural Sciences, Federal Univ of Uberlândia, Uberlândia, MG, Brasil.
| | - G M Franco
- Institute of Agricultural Sciences, Federal Univ of Uberlândia, Uberlândia, MG, Brasil
- Entomology Dept, Louisiana State Univ, Baton Rouge, LA, USA
| | - D T Lima
- Institute of Agricultural Sciences, Federal Univ of Uberlândia, Uberlândia, MG, Brasil
| | - A R C Oliveira
- Institute of Agricultural Sciences, Federal Univ of Uberlândia, Uberlândia, MG, Brasil
| | - P F Silva
- Institute of Agricultural Sciences, Federal Univ of Uberlândia, Uberlândia, MG, Brasil
| | - A L Z Santos
- Institute of Agricultural Sciences, Federal Univ of Uberlândia, Uberlândia, MG, Brasil
- School of Agricultural and Veterinarian Sciences, São Paulo State Univ (Unesp), Jaboticabal, Brasil
| | - A V M Resende
- Institute of Agricultural Sciences, Federal Univ of Uberlândia, Uberlândia, MG, Brasil
| | - F A A Santos
- Institute of Biotechnology, Federal Univ of Uberlândia, Uberlândia, MG, Brasil
| | - L V C Girão
- College of Veterinary Medicine, Federal Univ of Uberlândia, Uberlândia, MG, Brasil
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