Ábrahám Levente (szerk.): Válogatott tanulmányok 13. - Natura Somogyiensis 28. / Miscellanea 13. (Kaposvár, 2016)
Sándor A.–Csikász T-Farkas S.–Rácz T.–Sárospataki M.: Preliminary semi-field study ont he effect of the neonicotinoid containing seed dressings to honeybees as pollinator in sunflower
Natura Somogyiensis 28 33-40 Kaposvár, 2016 Preliminary semi-field study on the effect of the neonicotinoid containing seed dressings to honeybees as pollinator in sunflower •András Sándor, 'Tamás Csikász, 2Sándor Farkas, 3Tímea Rácz 4 Miklós Sárospataki Teed Crops Research Institute, Kaposvár University, H-7095 Iregszemcse, Napraforgó u. 1, Hungary, e-mail: sandorandras85@gmail.com; csikasz.tamas@ke.hu department of Nature Protection, Faculty of Agricultural and Environmental Sciences, Kaposvár University, H-7400 Kaposvár, Guba S. u. 40., Hungary, e-mail: farkas.sandor@ke.hu ^Department of Zoology and Animal Ecology, Faculty of Agricultural and Environmental Sciences, Szent István University, H-2100 Gödöllő, Páter K. u. 1., Hungary, e-mail: sarospataki.miklos@mkk.szie.hu 4Research Centre for Farm Animal Gene Conservation, Institute of Apiculture and Bee Biology, H-2100 Gödöllő, Isaszegi út 200., Hungary, e-mail: racz.timea@hagk.hu Sándor, A., Csikasz, T. Farkas, S. Rácz, T. & Sárospataki, M.: Preliminary semi-field study on the effect of the neonicotinoid containing seed dressings to honeybees as pollinator in sunflower. Abstract: The key of the success of the neonicotinoid-type insecticides is that they have the greatest affinity to the nicotinic acetylcholine receptors of the insect central nervous system. They block them irreversibly, eventually, they cause the destruction of pests insects. Ultimately, they affect the healthy functioning of ecosystems: their effect also can be extended to plant visitor pollinators - bees, butterflies, hoverflies, etc. causing poisoning-, health- and behaviour-changing symptoms. In 2013, we investigated the effect of the residues of a neonicotinoid seed treatment of sunflower's among semi-field conditions More than 19 000 died individuals were collected during the measurements. On the basis of the results it can be stated that the literature known symptoms required about two weeks to appear on bees. The result have underlined the relevancy of our examinations to interrelation of beekeeping and modem crop systems. Keywords: neonicotinoid, nAChR, bee destruction, insecticide Introduction Honey as nutrient is an integral part of a complete eating of modem man. It contains a lot of important and useful minerals, not to mention the fact that its use as sweetener is much healthier than refined sugars. However, in addition to the production of honey, bees are carried another, much larger in volume benefit by the pollination of crop plants. As prey they have an important part in the food repertoire of different species, for exam-
