Bischoff, Gabriela

Jütte, Tobias

Krahner, André

Pistorius, Jens

Wernecke, Anna

English

JKI Open Journal Systems (Julius Kühn-Institut)

11th Young Scientists Meeting 2018, Braunschweig, Germany, November 14-16 Wernecke et al. Comparative studies regarding the sensitivity of the honey bee and wild bee species to plant protection products – residue analysis  Anna Wernecke, Tobias Jütte, André Krahner, Gabriela Bischoff and Jens Pistorius Julius Kühn Institute, Institute for Bee Protection, Braunschweig E-mail of corresponding author: anna.wernecke@julius-kuehn.deFrom the registration processes of plant protection products (PPPs) and the asso-ciated risk assessment for bees arises an increasing need for experimental data on non-Apis pollinators, in order to assess potential side effects of PPPs on this largely understudied set of test organ-isms. At present, the extent of differ-ences in the reaction of honey bees and wild bee species, especially to PPPs and other factors in our agricultural land-scape, remains unclear. So far, toxicity has only been examined for a few species, mainly the red mason bee Osmia rufa/bicornis and the bumble bee Bombus terrestris. Data on toxicity of active substances to other bee species are limited.  Therefore, we investigated in a series of studies under controlled laboratory con-ditions the effects on the honey bee (Apis mellifera L.) and different wild bee spe-cies with various life history characteris-tics of a pyrethroid insecticide containing lambda-cyhalothrin, classified as harm-less to bees, but known for transient ef-fects. To investigate the natural detoxifi-cation process of active substances a spray chamber was used to generate a contact exposure by typical field applica-tion rates with standard nozzles types used by farmers. After the application liv-ing honey bees and individuals of three different wild bee species (bumble bee Bombus terrestris, mason bees Osmia bi-cornis and Osmia cornuta)  were frozen at -20°C half an hour, three days and tendays after exposition, respectively. Re-dues were analysed using a multi-residuemethod. The residue level of lambda-cyhalothrin being quantified by use of gaschromatography/mass spectrometry(GC-MS).This comparative analysis of the residues of active substances in the honey bee and wild bee species investigates to what ex-tent there are differences regarding ef-fects and the metabolism between the honey bee, as representative organism, and other wild bees and which conse-quences these have for the risk assess-ment. While the analysis has not been finalised yet, preliminary results indicate different reactions of the tested bee species. The final results will be presented during the poster presentation. Berichte aus dem Julius Kühn-Institut 200 55

Comparative studies regarding the sensitivity of the honey bee and wild bee species to plant protection products – residue analysis

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Comparative studies regarding the sensitivity of the honey bee and wild bee species to plant protection products – residue analysis

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