Institut für Bienenschutz
Development of test methods for the investigation of acute, lethal, chronic and sublethal effects of plant protection products on wild bees. The general aim of the experiments is to investigate the extent to which test methods and their results, which have been valid for the honey bee (Apis mellifera), can be transferred to other wild bee species. Further, we want to know which additional aspects must be taken into account in the implementation of experiments, but also for the interpretation of the test results. For this purpose, experiments are carried out with the current model organisms (Bombus terrestris; Osmia bicornis, Osmia cornuta) under laboratory, semi-field and field conditions. In so-called ring test trials, which are coordinated by the “non-Apis” working group of the International Commission on Plant Pollinator Relations (ICPPR), optimization based on species-specific life characteristics are also studied. These experiments are accompanied by further studies on the biology of the species, including i.a. cocoon selection, cocoon identification, handling, nesting material and nesting behavior for mason bees; as well as colony selection, size and development for bumble bees. In general, appropriate endpoints for risk assessment will be tested and validated. In addition, tests on the sensitivity of various wild bee species to pesticides, compared to honey bees, are carried out under laboratory, semi-field and field conditions. It is to be examined whether and to what extent the known effects of pesticides on honey bees can be transferred to wild bees and which other factors can have an impact on sensitivity. The knowledge gained should guarantee a cross-species risk assessment.
Federal Ministry of Agriculture, Food and Regional Identity
