| Title: | Hanseniaspora uvarum Attracts Drosophila suzukii (Diptera: Drosophilidae) With High Specificity |
| Author(s): | Kleman I; Rehermann G; Kwadha CA; Witzgall P; Becher PG; |
| Address: | "Department of Plant Protection Biology, Unit Chemical Ecology Horticulture, Swedish University of Agricultural Sciences, Alnarp, Box 190, 234 22 Lomma, Sweden" |
| ISSN/ISBN: | 1938-291X (Electronic) 0022-0493 (Print) 0022-0493 (Linking) |
| Abstract: | "Since the early phase of the intercontinental dispersal of Drosophila suzukii (Matsumura) (Diptera: Drosophilidae), fermentation baits have been used for monitoring. Self-made lures and commercial products are often based on wine and vinegar. From an ecological perspective, the formulation of these baits is expected to target especially vinegar flies associated with overripe fruit, such as Drosophila melanogaster (Meigen) (Diptera: Drosophilidae). Hanseniaspora uvarum (Niehaus) (Ascomycota: Saccharomyceta) is a yeast closely associated with D. suzukii and fruit, and furthermore attractive to the flies. Based on this relation, H. uvarum might represent a suitable substrate for the development of lures that are more specific than vinegar and wine. In the field, we therefore, compared H. uvarum to a commercial bait that was based on vinegar and wine with respect to the number of trapped D. suzukii relative to other drosophilids and arthropods. Trap captures were higher with the commercial bait but specificity for D. suzukii was greater with H. uvarum. Moreover, H. uvarum headspace extracts, as well as a synthetic blend of H. uvarum volatiles, were assayed for attraction of D suzukii in a wind tunnel and in the field. Headspace extracts and the synthetic blend induced strong upwind flight in the wind tunnel and confirmed attraction to H. uvarum volatiles. Furthermore, baited with H. uvarum headspace extract and a drowning solution of aqueous acetic acid and ethanol, 74% of field captured arthropods were D. suzukii. Our findings suggest that synthetic yeast headspace formulations might advance the development of more selective monitoring traps with reduced by-catch" |
| Keywords: | Acetic Acid/pharmacology Animals *Drosophila Drosophila melanogaster Fruit *Hanseniaspora *Insect Control/methods Yeasts horticultural pest invasive pest pest surveillance semiochemical spotted wing drosophila; |
| Notes: | "MedlineKleman, Isabella Rehermann, Guillermo Kwadha, Charles A Witzgall, Peter Becher, Paul G eng PA 1202/SLU Partnership Alnarp/ 2015-1221/Swedish Research Council Formas/ SLU Centre for Biological Control/ POS_EXT_2016_1_134106/Uruguayan National Agency for Research and Innovation/ Research Support, Non-U.S. Gov't England 2022/04/07 J Econ Entomol. 2022 Aug 10; 115(4):999-1007. doi: 10.1093/jee/toac029" |
