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Bottom-up effects of fungicides on tadpoles of the European common frog (Rana temporaria)

Bundschuh, Mirco and Zubrod, Jochen P. and Wernicke, Theo and Konschak, Marco and Werner, Leon and Bruhl, Carsten A. and Baudy, Patrick and Schulz, Ralf (2021). Bottom-up effects of fungicides on tadpoles of the European common frog (Rana temporaria). Ecology and Evolution. 11 , 4353-4365
[Research article]

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Abstract

Biodiversity is under pressure worldwide, with amphibians being particularly threatened. Stressors related to human activity, such as chemicals, are contributing to this decline. It remains, however, unclear whether chemicals exhibiting a fungicidal activity could indirectly affect tadpoles that depend on microbially conditioned leaf litter as food source. The indirect effect of fungicides (sum concentration of a fungicide mixture composed of azoxystrobin, carbendazim, cyprodinil, quinoxyfen, and tebuconazole: 100 mu g/L) on tadpoles was assessed relative to leaf litter colonized by microbes in absence of fungicides (control) and a worst-case scenario, that is leached leaf litter without microbial colonization. The quality of leaf litter as food for tadpoles of the European common frog (Rana temporaria) was characterized through neutral lipid fatty acid profiles and microbial sum parameters and verified by sublethal responses in tadpoles (i.e., feeding rate, feces production, growth, and fatty acid composition). Fungicides changed the nutritious quality of leaf litter likely through alterations in leaves' neutral lipid fatty acid profiles (i.e., changes in some physiologically important highly unsaturated fatty acids reached more than 200%) in combination with a potential adsorption onto leaves during conditioning. These changes were reflected by differences in the development of tadpoles ultimately resulting in an earlier start of metamorphosis. Our data provide a first indication that fungicides potentially affect tadpole development indirectly through bottom-up effects. This pathway is so far not addressed in fungicide environmental risk assessment and merits further attention.

Authors/Creators:Bundschuh, Mirco and Zubrod, Jochen P. and Wernicke, Theo and Konschak, Marco and Werner, Leon and Bruhl, Carsten A. and Baudy, Patrick and Schulz, Ralf
Title:Bottom-up effects of fungicides on tadpoles of the European common frog (Rana temporaria)
Series Name/Journal:Ecology and Evolution
Year of publishing :2021
Volume:11
Page range:4353-4365
Number of Pages:13
Publisher:WILEY
ISSN:2045-7758
Language:English
Publication Type:Research 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 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:fatty acid composition, food quality, fungicides, metamorphosis, tadpoles
URN:NBN:urn:nbn:se:slu:epsilon-p-111395
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111395
Additional ID:
Type of IDID
DOI10.1002/ece3.7332
Web of Science (WoS)000630865800001
ID Code:24340
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Aquatic Sciences and Assessment
Deposited By: SLUpub Connector
Deposited On:01 Jun 2021 12:43
Metadata Last Modified:01 Jun 2021 12:51

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