Effects of organic acid treatments on small hive beetles, <Emphasis Type="Italic">Aethina tumida</Emphasis>, and the associated yeast <Emphasis Type="Italic">Kodamaea ohmeri</Emphasis> |
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| Authors: | Marc O Schäfer Wolfgang Ritter Jeff S Pettis Peter E A Teal Peter Neumann |
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| Institution: | 1.Chemisches und Veterin?runtersuchungsamt Freiburg (CVUA),Freiburg,Germany;2.Swiss Bee Research Centre,Agroscope Liebefeld-Posieux Research Station ALP,Bern,Switzerland;3.USDA-ARS Bee Research Laboratory,Beltsville,USA;4.USDA-ARS Center for Medical, Agricultural and Veterinary Entomology (CMAVE) Laboratory,Gainesville,USA;5.Department of Zoology and Entomology,Rhodes University,Grahamstown,South Africa;6.Eastern Bee Research Institute of Yunnan Agricultural University,Kunming,China |
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| Abstract: | In honeybee, Apis mellifera, colonies infested with larval and adult small hive beetles (SHB), hive material, and in particular honey, tends to ferment,
probably due to SHB-associated yeasts such as the predominant Kodamaea ohmeri. Here, we test the effects of organic acids on K. ohmeri and on SHB-infested honey/pollen combs. Organic acids were applied at standard concentrations used by beekeepers to control
other pests. In laboratory tests, the growth of K. ohmeri was significantly inhibited by lactic, formic and acetic acids. Treatments of SHB-infested honey/pollen combs (N = 18 colonies) with acetic acid significantly increased mortality of adult SHB and treatments with formic acid significantly
reduced larval infestation. Our data suggest that treatment of honeybee colonies and storage rooms with organic acids could
also help in reducing SHB damage. |
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| Keywords: | Aethina tumida Apis mellifera Honeybee Kodamaea ohmeri Organic acid Small hive beetle |
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