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dc.contributor.author
Rossbacher, Silvan
dc.contributor.author
Vorburger, Christoph
dc.date.accessioned
2020-09-07T07:45:05Z
dc.date.available
2020-09-04T19:56:58Z
dc.date.available
2020-09-07T07:45:05Z
dc.date.issued
2020-09
dc.identifier.issn
1752-4571
dc.identifier.issn
1752-4563
dc.identifier.other
10.1111/eva.12934
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/438544
dc.identifier.doi
10.3929/ethz-b-000438544
dc.description.abstract
There is increasing demand for sustainable pest management to reduce harmful effects of pesticides on the environment and human health. For pest aphids, biological control with parasitoid wasps provides a welcome alternative, particularly in greenhouses. However, aphids are frequently infected with the heritable bacterial endosymbiont Hamiltonella defensa, which increases resistance to parasitoids and thereby hampers biological control. Using the black bean aphid (Aphis fabae) and its main parasitoid Lysiphlebus fabarum, we tested whether prior adaptation of parasitoids can improve the control of symbiont‐protected pests. We had parasitoid lines adapted to two different strains of H. defensa by experimental evolution, as well as parasitoids evolved on H. defensa‐free aphids. We compared their ability to control caged aphid populations comprising 60% unprotected and 40% H. defensa‐protected aphids, with both H. defensa strains present in the populations. Parasitoids that were not adapted to H. defensa had virtually no effect on aphid population dynamics compared to parasitoid‐free controls, but one of the adapted lines and a mixture of both adapted lines controlled aphids successfully, strongly benefitting plant growth. Selection by parasitoids altered aphid population composition in a very specific manner. Aphid populations became dominated by H. defensa‐protected aphids in the presence of parasitoids, and each adapted parasitoid line selected for the H. defensa strain it was not adapted to. This study shows, for the first time, that prior adaptation of parasitoids improves biological control of symbiont‐protected pests, but the high specificity of parasitoid counter‐resistance may represent a challenge for its implementation.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Wiley
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Aphids
en_US
dc.subject
Biological control
en_US
dc.subject
Defensive symbiosis
en_US
dc.subject
Parasitoid
en_US
dc.subject
Resistance evolution
en_US
dc.title
Prior adaptation of parasitoids improves biological control of symbiont‐protected pests
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2020-02-16
ethz.journal.title
Evolutionary Applications
ethz.journal.volume
13
en_US
ethz.journal.issue
8
en_US
ethz.journal.abbreviated
Evol. Appl.
ethz.pages.start
1868
en_US
ethz.pages.end
1876
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.publication.place
Hoboken, NJ
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2020-09-04T19:57:09Z
ethz.source
WOS
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2020-09-07T07:45:21Z
ethz.rosetta.lastUpdated
2024-02-02T11:59:18Z
ethz.rosetta.versionExported
true
ethz.COinS
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