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Dörre, Malin Iris, 2015. Trapping social wasps, in apple orchards and vineyards with synthetic volatiles and live yeast cultures in Scania, Scandinavia. Second cycle, A1E. Alnarp: SLU, Department of Biosystems and Technology (from 130101)

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Abstract

Social wasps (Hymenoptera, Vespinae) foraging for carbohydrate nutrients are a major pest, particularly in berry and fruit orchards. The identification of volatile attractants for social wasp management is accordingly an urgent research challenge. Overripe fruit and fermenting sweet baits are since long known to attract wasps. Several synthetic compounds mimicking these food sources have been developed. However, yeast volatiles, signalling fermenting fruit are still incompletely known. For the first time five, synthetic compounds and five live yeast strains were evaluated as attractants for social wasps in orchards and vineyards in Scania, Scandinavia. When blended with acetic acid, either 2-­‐methylpropan-­‐1-­‐ol, 2-­‐methylbutan-­‐1-­‐ol, 3-­‐methylbutan-­‐1-­‐ol or 2-­‐methylpropan-­‐2-­‐ol strongly attracted two social wasps, Vespula germanica and V. vulgaris. Single compounds attracted significantly fewer insects. Heptyl butanoate as a single test compound or blended with acetic acid was not attractive to social wasps. In addition to synthetic chemicals, five yeast strains known to be associated with or attractive to various insects were tested. Liquid medium with fermenting Metschnikowia andauensis, M. chrysoperlae, M. pulcherrima, Saccharomyces sp., or Cryptococcus sp. strongly attracted V. germanica and V. vulgaris.

Main title:Trapping social wasps, in apple orchards and vineyards with synthetic volatiles and live yeast cultures in Scania, Scandinavia
Authors:Dörre, Malin Iris
Supervisor:Bengtsson, Marie
Examiner:Birgersson, Göran
Series:UNSPECIFIED
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2015
Level and depth descriptor:Second cycle, A1E
Student's programme affiliation:YHORT Horticultural Science Programme (admitted after 2000 and before July 1, 2007) 300 HEC
Department:(LTJ, LTV) > Department of Biosystems and Technology (from 130101)
(VH) > Department of Biosystems and Technology (from 130101)
Keywords:Vespinae, social wasps, lure, semiochemicals, yeast, apple, grapes
URN:NBN:urn:nbn:se:slu:epsilon-s-4538
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-4538
Subjects:Pests of plants
Language:English
Additional Information:Ämne: Biologi
Deposited On:30 Jun 2015 14:06
Metadata Last Modified:30 Jun 2015 14:06

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