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Poor adult nutrition impairs learning and memory in a parasitoid wasp

Hossein Kishani Farahani, Yasaman Moghadassi, Jean-Sebastien Pierre, Stéphane Kraus, Mathieu Lihoreau
doi: https://doi.org/10.1101/2021.01.09.426073
Hossein Kishani Farahani
1Equipe Recherches Agronomiques, Agronutrition, Carbonne, France
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  • For correspondence: H.kishani@agro-nutrition.fr mathieu.lihoreau@univ-tlse3.fr
Yasaman Moghadassi
2Department of Plant Protection, Faculty of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
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Jean-Sebastien Pierre
3University of Rennes 1, UMR-CNRS 6553 EcoBio, Avenue du Général Leclerc, Campus de Beaulieu, 35042 Rennes Cedex, France
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Stéphane Kraus
4Research Center on Animal Cognition (CRCA), Center for Integrative Biology (CBI); CNRS, University Paul Sabatier – Toulouse III, France
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Mathieu Lihoreau
4Research Center on Animal Cognition (CRCA), Center for Integrative Biology (CBI); CNRS, University Paul Sabatier – Toulouse III, France
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  • For correspondence: H.kishani@agro-nutrition.fr mathieu.lihoreau@univ-tlse3.fr
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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 24h to either honey, sucrose solution 20%, sucrose solution 10%, or no food, before being conditioned in an olfactory associative learning task in which an odor (orange) was associated to a reward (host larvae). Wasps fed honey showed 3.5 times higher learning performances and 1.5 times longer memory retention times than wasps fed sucrose solutions and starved wasps. 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 olfactory memories for choosing high quality hosts for their progeny.

Competing Interest Statement

The authors have declared no competing interest.

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. All rights reserved. No reuse allowed without permission.
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Posted January 10, 2021.
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Poor adult nutrition impairs learning and memory in a parasitoid wasp
Hossein Kishani Farahani, Yasaman Moghadassi, Jean-Sebastien Pierre, Stéphane Kraus, Mathieu Lihoreau
bioRxiv 2021.01.09.426073; doi: https://doi.org/10.1101/2021.01.09.426073
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Poor adult nutrition impairs learning and memory in a parasitoid wasp
Hossein Kishani Farahani, Yasaman Moghadassi, Jean-Sebastien Pierre, Stéphane Kraus, Mathieu Lihoreau
bioRxiv 2021.01.09.426073; doi: https://doi.org/10.1101/2021.01.09.426073

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