A ‘Landscape physiology’ approach for assessing bee health highlights the benefits of floral landscape enrichment and semi-natural habitats
2017
Alaux, Cédric | Allier, Fabrice | Decourtye, Axel | Odoux, Jean Francois | Tamic, Thierry | Chabirand, Mélanie | Delestra, Estelle | Decugis, Florent | Le Conte, Yves | Henry, Mickaël | Abeilles et Environnement (AE) ; Institut National de la Recherche Agronomique (INRA)-Avignon Université (AU) | UMT Protection des abeilles dans l’environnement (UMT PrADE) ; Association pour le Developpement de l'Apiculture Provencale (ADAPI)-Institut de l'abeille (ITSAP)-Centre National de la Recherche Scientifique (CNRS)-Terres Inovia-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | Institut de l'abeille (ITSAP) | Les instituts techniques agricoles (Acta) | Entomologie (ENTOMOLOGIE) ; Institut National de la Recherche Agronomique (INRA) | ADAPIC
Understanding how anthropogenic landscape alteration affects populations of ecologically- and economically-important insect pollinators has never been more pressing. In this context, the assessment of landscape quality typically relies on spatial distribution studies, but, whether habitatrestoration techniques actually improve the health of targeted pollinator populations remains obscure. This gap could be filled by a comprehensive understanding of how gradients of landscape quality influence pollinator physiology. We therefore used this approach for honey bees (Apis mellifera) to test whether landscape patterns can shape bee health. We focused on the pre-wintering period since abnormally high winter colony losses have often been observed. By exposing colonies to differentlandscapes, enriched in melliferous catch crops and surrounded by semi-natural habitats, we found that bee physiology (i.e. fat body mass and level of vitellogenin) was significantly improved by the presence of flowering catch crops. Catch crop presence was associated with a significant increase in pollen diet diversity. The influence of semi-natural habitats on bee health was even stronger. Vitellogenin level was in turn significantly linked to higher overwintering survival. Therefore, our experimental study, combining landscape ecology and bee physiology, offers an exciting proof-of-concept for directly identifying stressful or suitable landscapes and promoting efficient pollinator conservation.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Institut national de la recherche agronomique