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Infochemicals Influence Neonicotinoid Toxicity : Impact in Leaf Consumption, Growth, and Predation of the Amphipod Gammarus fossarum

Bundschuh, Mirco and Zubrod, Jochen P. and Kloettschen, Simon and Englert, Dominic and Schulz, Ralf (2020). Infochemicals Influence Neonicotinoid Toxicity : Impact in Leaf Consumption, Growth, and Predation of the Amphipod Gammarus fossarum. Environmental Toxicology and Chemistry. 39 , 1755-1764
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Abstract

Infochemicals act as inter- or intraspecific messengers. The literature suggests complex interactions between infochemicals (mainly predator cues) and chemical (e.g., pesticide) effects, with their direction and magnitude depending on the cue origin, pesticide identity, and test species. With the present study we assessed the impact of alarm cues alone and in combination with the neonicotinoid insecticide thiacloprid on leaf consumption, predation onBaetisnymphs, and dry weight of the amphipodGammarus fossarum. Alarm cues (ground gammarids) and thiacloprid alone decreased gammarid leaf consumption with increasing intensities. At a defined alarm cue intensity, which alone did not cause a significant reduction in gammarid feeding, thiacloprid-induced feeding effects were additive. During an experiment targeting gammarid predation onBaetisnymphs (120 h), thiacloprid and alarm cues alone did increase and reduce predation significantly, respectively. Moreover, alarm cues led to a lower final gammarid dry weight. However, alarm cues did not affect response variables during a second predation experiment performed at a higher thiacloprid concentration (2 vs 0.75 mu g/L). This discrepancy in alarm cue effects highlights either a varying susceptibility of the test species to these cues among experiments or that cue quality is fluctuating. Thus, the present study highlights a considerable variability in the individual and interactive effects of infochemicals and chemical stressors on aquatic biota, an insight relevant in the assessment of multiple stressors.Environ Toxicol Chem2020;00:1-10. (c) 2020 The Authors.Environmental Toxicology and Chemistrypublished by Wiley Periodicals LLC on behalf of SETAC.

Authors/Creators:Bundschuh, Mirco and Zubrod, Jochen P. and Kloettschen, Simon and Englert, Dominic and Schulz, Ralf
Title:Infochemicals Influence Neonicotinoid Toxicity : Impact in Leaf Consumption, Growth, and Predation of the Amphipod Gammarus fossarum
Series Name/Journal:Environmental Toxicology and Chemistry
Year of publishing :2020
Volume:39
Page range:1755-1764
Number of Pages:10
Publisher:WILEY
ISSN:0730-7268
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
Keywords:Environmental stimulus, Odor, Predator-prey interaction, Conspecific alarm cue, Semiochemical
URN:NBN:urn:nbn:se:slu:epsilon-p-107044
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-107044
Additional ID:
Type of IDID
DOI10.1002/etc.4802
Web of Science (WoS)000550524200001
ID Code:22116
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:04 Feb 2021 12:23
Metadata Last Modified:04 Feb 2021 12:31

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