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Data in, lures out: designing selective lures against fruit pests

Larsson Herrera, Sebastian (2022). Data in, lures out: designing selective lures against fruit pests. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-949-0
eISBN 978-91-7760-950-6
[Doctoral thesis]

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Abstract

With the push for rebuilding ecosystem resilience and the aim to lower the footprint of agriculture, there is an urgent need for novel, sustainable tools for managing pests. Insect olfaction is a good target to designing such novel tools. However, the rate at which odor-based insect control innovations are churned out is underwhelming. This thesis aims to accelerate the identification of lures using pests of wine and tropical fruits as models. Volatiles from microorganisms, hosts or other ecological relevant substrates, can be used to construct attractive lures. Such a lure was designed for Lobesia botrana, a severe pest in wine. First, volatiles emitted by microbe inoculated grapes were identified using GC-MS. A limited set of shared volatiles was attractive in the field, and further tailored to find a balance between attractiveness and selectivity. The best lure for L. botrana also caught more of other species such as important natural enemies, impacting ecosystem services provided in the vineyard. Hence the most attractive lure is not always the best. A group of invasive pests in the true fruit fly family, Tephritidae, was used as model organisms to design a novel workflow from primary research to lure design. Ranges of olfactory responses, olfactomes, of fruit flies that differ in ecology and phylogeny served as input to a database. Custom tools were developed that allowed for mining this database for ecological as well as evolutionary signals. In the selected pests, ecology overrode phylogeny in the electrophysiological response profile across both olfactory organs, antennae and palps, as well as different substrates. Further, a set of compounds was found that formed a preadaptive bridge between fruits, and a subset links the flies ancestral saprophily to their derived frugivory. Candidate lures, more attractive than fruits, were also tested in a novel six-choice olfactometer. The work shows that selective lures can be designed from generic volatiles and that this process can be strongly accelerated through comparative olfactomics.

Authors/Creators:Larsson Herrera, Sebastian
Title:Data in, lures out: designing selective lures against fruit pests
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2022
Number:2022:37
Number of Pages:55
Publisher:Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-949-0
ISBN for electronic version:978-91-7760-950-6
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
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 > Horticulture
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Bioinformatics and Systems Biology (methods development to be 10203)
Keywords:GC-EAD, olfactomics, L. botrana, Tephritidae, lures, sustainability
URN:NBN:urn:nbn:se:slu:epsilon-p-117107
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-117107
ID Code:27918
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Plant Protection Biology
Deposited By: SLUpub Connector
Deposited On:17 May 2022 10:25
Metadata Last Modified:01 Jun 2022 23:32

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