The two Poll-Ole-GI SUDOE partners in France, Unit APIS from INRA and CEBC from CNRS, seek to evaluate risks of insecticides to pollinators by sampling nectar in oleaginous crops.
During spring period, rapeseed crops provide important resources to pollinators in SUDOE regions. The blooming occurs between April and May and flowers contain very attractive nectar which is valuable to honey bees as well as wild pollinators. One of the objectives of the Poll-Ole-GI project is to evaluate toxicological risks to pollinators and the dispersal of agrochemicals in their environment.
Picture 1: Collection of rapeseed nectar in the field.
Since April, teams of the APIS unit from the French Institute for Agricultural Research in Magneraud (INRA) and the French National Center for Scientific Research in Chizé (CNRS-CEBC) have conducted nectar sampling in 27 agricultural lands. Samples are collected directly in rapeseed flowers using micro capillary tubes. This year, 49 samples have been collected over 5 days.
Picture 2: Nectar of sampling with micro capillary tube.
Back in the laboratory in unit APIS, nectar samples are repackaged and sugar amounts are determined. Then, they are sent to the French Agency for Food Environmental and Occupational Health and Safety (ANSES) for analysis of the presence of insecticide residues. Thus, it is possible to characterize potential contaminations of resources consumed by pollinators.