Patterns of food transfer in yellow-legged hornet nests revealed by heavy metal tracers
2022
Poidatz, Juliette | Lihoreau, Mathieu | Thiéry, Denis | Peuplements végétaux et bioagresseurs en milieu tropical (UMR PVBMT) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Université de La Réunion (UR)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Département Systèmes Biologiques (Cirad-BIOS) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | Centre de Recherches sur la Cognition Animale - UMR5169 (CRCA) ; Université Toulouse III - Paul Sabatier (UT3) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre de Biologie Intégrative (CBI) ; Université Toulouse III - Paul Sabatier (UT3) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Toulouse Mind & Brain Institut (TMBI) ; Université Toulouse - Jean Jaurès (UT2J) ; Université de Toulouse (UT)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3) ; Université de Toulouse (UT)-Université Toulouse - Jean Jaurès (UT2J) ; Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3) ; Université de Toulouse (UT) | Santé et agroécologie du vignoble (UMR SAVE) ; Université de Bordeaux (UB)-Institut des Sciences de la Vigne et du Vin (ISVV)-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | ANR-16-CE02-0002,POLLINET,Structure et efficacité des réseaux de pollinisation dans des environnements changeants(2016) | ANR-19-CE37-0024,3DNaviBee,How do bees solve navigational challenges in 3D?(2019) | ANR-20-ERC8-0004,BEE-MOVE,Pollination ecology: how do bees move across the landscape and fashion plant reproduction?(2020)
International audience
اظهر المزيد [+] اقل [-]إنجليزي. A social insect colony can be seen as a superorganism in which nutrient collection and regulation is achieved through the collective action of workers. Here we investigated how workers of the yellow-legged hornet Vespa velutina, an invasive predator of honeybees and other insects in Europe, distribute the incoming food within their nests. Food transfer among colonies differing in composition of developmental stage and abundance of different castes was compared by feeding workers with protein and carbohydrate solutions labelled with non-radioactive heavy metals (rubidium and caesium) and measuring the heavy metal tracers??? occurrence in adults and larvae in the nests after 24h. Caesium labelled sucrose was more abundant in the adults (workers, males and the queen), while rubidium labelled proteins were more abundant in the larvae. The lightest larvae received more protein than the others. The lightest workers received more carbohydrate, and the largest workers more protein. Even if this work is exploratory, our results considerably improve our knowledge of hornet biology by showing how food distribution patterns may vary throughout the development cycle of colonies. They also provide new perspectives to understand how specific nutrients are distributed in nests, and may help develop Trojan horses biological control strategies based on food distribution.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Institut national de la recherche agronomique