Lückmann, Johannes

Schmitzer, Stephan

English

JKI Open Journal Systems (Julius Kühn-Institut)

Hazards of pesticides to bees - 13th international symposium of the ICP-PR Bee protection group, October 18 – 20 2017, Valencia (Spain)  110  Julius-Kühn-Archiv, 462, 2018 3.2 Current status of the Oomen feeding test – modifications of the method to current needs* Johannes Lückmann1, Stephan Schmitzer2 1 RIFCON GmbH, Goldbeckstraße 13, 69493 Hirschberg, Germany, johannes.lueckmann@rifcon.de 2 ibacon GmbH, Arheilger Weg 17, 64380 Rossdorf, Germany, stephan.schmitzer@ibacon.com * on behalf of the Oomen-brood method ring test group of the German AG Bienenschutz DOI 10.5073/jka.2018.462.029 Abstract The Oomen feeding test (Oomen et al., 1992) has been used for a long time to investigate potential effects of plant protection products (PPPs) on honeybee brood (Apis mellifera L.) following oral uptake of a spiked sucrose solution after a single administration. The publication of Oomen was originally designed to assess side effects of plant protection products with insect growth-regulating properties and provides a rough description of the method, only. It has never been validated or ring-tested. With upcoming more recent procedures (i.e. OECD Guidance Document 75, 2007) and new recommendations (i.e. Guidance Document on the risk assessment of plant protection products on bees, EFSA 2013) the Oomen method has been modified according to current needs. Moreover, the significance of the test has increased as the EFSA Guidance Document recommends the Oomen bee brood feeding test, next to the OECD GD 75 as one possibility to refine the risk on honeybee brood if concern is raised on them. The aim of the presentation was to summarize the methodological modifications of the original Oomen feeding test during the past decades in order to harmonize assessments and schedules to current needs (e.g. OECD GD 75). In detail, a description was given on the set-up of the test including timing of assessments of adult and pupae mortality, colony development, colony strength, detailed brood development and number of replicates.  Moreover, an update of Brood Termination Rates (BTRs) as the key endpoint of brood studies was given (Lückmann & Schmitzer 2013) and proposals of validity criteria were made. Finally, based on the revision, modifications were shown to adapt the acute method to a chronic exposure over a period of nine days according to the EFSA recommendation (Lückmann & Schmitzer 2015) (see also poster at this symposium by J. Lückmann & S. Schmitzer). References EFSA (2013): EFSA Guidance Document on the risk assessment of plant production products on bees (Apis mellifera, Bombus spp. and solitary bees) (published on July 04, 2013, updated on 04 July 2014). EFSA Journal 11 (7), 3295, 268 pp. LÜCKMANN, J., S. SCHMITZER (2013): Evaluation and improvement of the Oomen bee brood test. Poster Presentation at the SETAC GLB Conference in Essen, Germany, 2013 and the 8th SETAC Europe Special Science Symposium, Brussels, Belgium, 2013.  LÜCKMANN, J., S. SCHMITZER (2015): The effects of fenoxycarb in a chronic Oomen feeding test – results of a ring-test. In: Hazards of pesticides to bees, 12th Internat. Symp. ICP-PR, Ghent, Belgium 2014, ed. by Oomen PA & Pistorius J, Julius-Kühn-Archiv 450, 75-81.  OOMEN, P. A., A. DE RUIJTER, and J. VAN DER STEEN 1992: Method for honeybee brood feeding tests with insect growth-regulating insecticides. Bulletin OEPP/EPPO Bulletin 22, 613–616. OECD Guidance Document No. 75 (2007): Guidance document on the honey bee (Apis mellifera L.) brood test under semi-field conditions. Series of testing and assessment, Number 75. ENV/JM/MONO 22, 11-27.    

3.2 Current status of the Oomen feeding test – modifications of the method to current needs

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3.2 Current status of the Oomen feeding test – modifications of the method to current needs

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