Signals of adaptation to agricultural stress in the genomes of two European bumblebees
2022
Hart, Alex, F | Verbeeck, Jaro | Ariza, Daniel | Cejas, Diego | Ghisbain, Guillaume | Honchar, Hanna | Radchenko, Vladimir, G | Straka, Jakub | Ljubomirov, Toshko | Lecocq, Thomas | Dániel-Ferreira, Juliana | Flaminio, Simone | Bortolotti, Laura | Karise, Reet | Meeus, Ivan | Smagghe, Guy | Vereecken, Nicolas | Vandamme, Peter | Michez, Denis | Maebe, Kevin | Universiteit Gent = Ghent University = Université de Gand (UGENT) | Université de Mons = University of Mons (UMONS) | Laboratoire de Zoologie [Mons] ; Université de Mons = University of Mons (UMONS) | National Academy of Sciences of Ukraine = Національна академія наук України = Académie nationale des sciences d'Ukraine (NASU / НАН України) | Univerzita Karlova [Praha, Česká republika] = Charles University [Prague, Czech Republic] (UK) | Universität für Bodenkultur Wien = University of Natural Resources and Life Sciences [Vienne, Autriche] (BOKU) | Laboratoire Animal et agroécosystèmes (L2A) ; Université de Lorraine (UL)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Unité de Recherches Animal et Fonctionnalités des Produits Animaux (URAFPA) ; Université de Lorraine (UL)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Consiglio per la Ricerca in Agricoltura e l’analisi dell’economia agraria = Council for Agricultural Research and Economics (CREA) | Estonian University of Life Sciences (EMU) | Université libre de Bruxelles (ULB)
International audience
Afficher plus [+] Moins [-]anglais. Human-induced environmental impacts on wildlife are widespread, causing major biodiversity losses. One major threat is agricultural intensification, typically characterised by large areas of monoculture, mechanical tillage, and the use of agrochemicals. Intensification leads to the fragmentation and loss of natural habitats, native vegetation, and nesting and breeding sites. Understanding the adaptability of insects to these changing environmental conditions is critical to predicting their survival. Bumblebees, key pollinators of wild and cultivated plants, are used as model species to assess insect adaptation to anthropogenic stressors. We investigated the effects of agricultural pressures on two common European bumblebees, Bombus pascuorum and B. lapidarius . Restriction-site Associated DNA Sequencing was used to identify loci under selective pressure across agricultural-natural gradients over 97 locations in Europe. 191 unique loci in B. pascuorum and 260 in B. lapidarius were identified as under selective pressure, and associated with agricultural stressors. Further investigation suggested several candidate proteins including several neurodevelopment, muscle, and detoxification proteins, but these have yet to be validated. These results provide insights into agriculture as a stressor for bumblebees, and signal for conservation action in light of ongoing anthropogenic changes.
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