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dc.contributor.author
Nyman, Anna-Maija
dc.contributor.author
Hintermeister, Anita
dc.contributor.author
Schirmer, Kristin
dc.contributor.author
Ashauer, Roman
dc.date.accessioned
2018-10-04T12:26:54Z
dc.date.available
2017-06-10T18:15:39Z
dc.date.available
2018-10-04T12:26:54Z
dc.date.issued
2013-05-15
dc.identifier.issn
1932-6203
dc.identifier.other
10.1371/journal.pone.0062472
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/68350
dc.identifier.doi
10.3929/ethz-b-000068350
dc.description.abstract
If an organism does not feed, it dies of starvation. Even though some insecticides which are used to control pests in agriculture can interfere with feeding behavior of insects and other invertebrates, the link from chemical exposure via affected feeding activity to impaired life history traits, such as survival, has not received much attention in ecotoxicology. One of these insecticides is the neonicotinoid imidacloprid, a neurotoxic substance acting specifically on the insect nervous system. We show that imidacloprid has the potential to indirectly cause lethality in aquatic invertebrate populations at low, sublethal concentrations by impairing movements and thus feeding. We investigated feeding activity, lipid content, immobility, and survival of the aquatic arthropod Gammarus pulex under exposure to imidacloprid. We performed experiments with 14 and 21 days duration, both including two treatments with two high, one day pulses of imidacloprid and one treatment with a low, constant concentration. Feeding of G. pulex as well as lipid content were significantly reduced under exposure to the low, constant imidacloprid concentration (15 µg/L). Organisms were not able to move and feed – and this caused high mortality after 14 days of constant exposure. In contrast, feeding and lipid content were not affected by repeated imidacloprid pulses. In these treatments, animals were mostly immobilized during the chemical pulses but did recover relatively fast after transfer to clean water. We also performed a starvation experiment without exposure to imidacloprid which showed that starvation alone does not explain the mortality in the constant imidacloprid exposure. Using a multiple stressor toxicokinetic-toxicodynamic modeling approach, we showed that both starvation and other toxic effects of imidacloprid play a role for determining mortality in constant exposure to the insecticide.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Public Library of Science
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
The Insecticide Imidacloprid Causes Mortality of the Freshwater Amphipod Gammarus pulex by Interfering with Feeding Behavior
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
ethz.journal.title
PLoS ONE
ethz.journal.volume
8
en_US
ethz.journal.issue
5
en_US
ethz.journal.abbreviated
PLoS ONE
ethz.pages.start
e62472
en_US
ethz.size
13 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
006206116
ethz.publication.place
Lawrence, KS, USA
en_US
ethz.publication.status
published
en_US
ethz.date.deposited
2017-06-10T18:16:52Z
ethz.source
ECIT
ethz.identifier.importid
imp593650b671b0932225
ethz.ecitpid
pub:108556
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-17T09:02:21Z
ethz.rosetta.lastUpdated
2018-10-04T12:26:58Z
ethz.rosetta.versionExported
true
ethz.COinS
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