Effects of two commonly used fungicides on the amphipod Austrochiltonia subtenuis

VU, H, Keough, M, Long, S and Pettigrove, V 2017, 'Effects of two commonly used fungicides on the amphipod Austrochiltonia subtenuis', Environmental Toxicology and Chemistry, vol. 36, no. 3, pp. 720-726.

Document type: Journal Article
Collection: Journal Articles

Title Effects of two commonly used fungicides on the amphipod Austrochiltonia subtenuis
Author(s) VU, H
Keough, M
Long, S
Pettigrove, V
Year 2017
Journal name Environmental Toxicology and Chemistry
Volume number 36
Issue number 3
Start page 720
End page 726
Total pages 7
Publisher John Wiley & Sons
Abstract Fungicides are used widely in agriculture and have been detected in adjacent rivers and wetlands. However, relatively little is known about the potential effects of fungicides on aquatic organisms. The present study investigated the effects of 2 commonly used fungicides, the boscalid fungicide Filan® and the myclobutanil fungicide Systhane 400 WP, on life history traits (survival, growth, and reproduction) and energy reserves (lipid, protein, and glycogen content) of the amphipod Austrochiltonia subtenuis under laboratory conditions, at concentrations detected in aquatic environments. Amphipods were exposed to 3 concentrations of Filan (1 μg active ingredient [a.i.]/L, 10 μg a.i./L, and 40 μg a.i./L) and Systhane (0.3 μg a.i./L, 3 μg a.i./L, and 30 μg a.i./L) over 56 d. Both fungicides had similar effects on the amphipod at the organism level. Reproduction was the most sensitive endpoint, with offspring produced in controls but none produced in any of the fungicide treatments, and total numbers of gravid females in all fungicide treatments were reduced by up to 95%. Female amphipods were more sensitive than males in terms of growth. Systhane had significant effects on survival at all concentrations, whereas significant effects of Filan on survival were observed only at 10 μg a.i./L and 40 μg a.i./L. The effects of fungicides on energy reserves of the female amphipod were different. Filan significantly reduced amphipod protein content, whereas Systhane significantly reduced the lipid content. The present study demonstrates wide-ranging effects of 2 common fungicides on an ecologically important species that has a key role in trophic transfer and nutrient recycling in aquatic environments. These results emphasize the importance of considering the long-term effects of fungicides in the risk assessment of aquatic ecosystems.
Subject Freshwater Ecology
Keyword(s) Fungicide
Aquatic invertebrates
Reproductive toxicity
Chronic effects
Energy reserves
DOI - identifier 10.1002/etc.3584
Copyright notice © 2016 SETAC
ISSN 0730-7268
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