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Designing a species-selective lure based on microbial volatiles to target Lobesia botrana

Larsson Herrera, Sebastian and Rikk, Péter and Köblös, Gabriella and Szelényi, Magdolna Olívia and Molnár, Béla Péter and Dekker, Teun and Tasin, Marco (2020). Designing a species-selective lure based on microbial volatiles to target Lobesia botrana. Scientific Reports. 10 , 6512 , 1-11
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Abstract

Sustainable, low impact control methods, including mating disruption and microbial insecticides against L. botrana have been available for decades. Yet, successful implementation has been restricted to only a few grapevine districts in the world. A limiting factor is the lack of a female attractant to either monitor or control the damaging sex. Volatile attractants for both female and male insects can be used to assess when L. botrana populations exceed economic thresholds, and to decrease the use of synthetic pesticides within both conventional and pheromone programs. Rather than using host-plant volatiles, which are readily masked by background volatiles released by the main crop, we tested the attractiveness of volatiles that signify microbial breakdown and more likely stand out against the background odour. A two-component blend of 2-phenylethanol (2-PET) and acetic acid (AA) caught significant numbers of both sexes. Catches increased with AA and, to a minimal extent, 2-PET loads. However, a higher load of 2-PET also increased bycatches, especially of Lepidoptera and Neuroptera. Major (ethanol, ethyl acetate, 3-methyl-1-butanol) or minor (esters, aldehydes, alcohols and a ketone) fermentation volatiles, did surprisingly not improve the attraction of L. botrana compared to the binary blend of 2-PET and AA alone, but strongly increased bycatches. The most attractive lure may thus not be the best choice in terms of specificity. We suggest that future research papers always disclose all bycatches to permit evaluation of lures in terms of sustainability.

Authors/Creators:Larsson Herrera, Sebastian and Rikk, Péter and Köblös, Gabriella and Szelényi, Magdolna Olívia and Molnár, Béla Péter and Dekker, Teun and Tasin, Marco
Title:Designing a species-selective lure based on microbial volatiles to target Lobesia botrana
Year of publishing :2020
Volume:10
Article number:6512
Number of Pages:0
Publisher:Springer Nature
ISSN:2045-2322
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:sustainable control methods, Lobesia botrana, species-selective lures, bycatches
URN:NBN:urn:nbn:se:slu:epsilon-p-105794
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-105794
Additional ID:
Type of IDID
DOI10.1038/s41598-020-63088-3
ID Code:17123
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:09 Jun 2020 06:17
Metadata Last Modified:09 Jun 2020 06:17

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