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Development of an Alternative Test System for Chronic Testing of Lotic Macroinvertebrate Species: A Case Study with the Insecticide Imidacloprid
Environmental toxicology and chemistry, 2021-08, Vol.40 (8), p.2229-2239
Brüggemann, Maria
Hund‐Rinke, Kerstin
Böhmer, Walter
Schaefers, Christoph
2021
Volltextzugriff (PDF)
Details
Autor(en) / Beteiligte
Brüggemann, Maria
Hund‐Rinke, Kerstin
Böhmer, Walter
Schaefers, Christoph
Titel
Development of an Alternative Test System for Chronic Testing of Lotic Macroinvertebrate Species: A Case Study with the Insecticide Imidacloprid
Ist Teil von
Environmental toxicology and chemistry, 2021-08, Vol.40 (8), p.2229-2239
Ort / Verlag
United States: Blackwell Publishing Ltd
Erscheinungsjahr
2021
Quelle
Wiley Online Library - AutoHoldings Journals
Beschreibungen/Notizen
There are currently few suitable test systems for the chronic toxicity testing of aquatic macroinvertebrates under stream conditions. Therefore, a new test system mimicking running water conditions was developed for testing with lotic insects. This system uses small test cages, with 10 of these suspended inside each 25‐L container and rotating at 0.1 m/s, to create a water flow for the individual organism inside each cage. To test the performance of the new exposure system, chronic effects (21 d) of the neonicotinoid imidacloprid were investigated with field‐collected larvae of the stonefly Protonemura sp. Endpoints were survival, growth, and/or emergence (depending on the developmental stage of the larvae at the start of the exposure). Two experiments conducted 1 yr apart showed good reproducibility: growth 10% effect concentration (EC10) values were 15.3 and 18.5 μg/L and no‐observed‐effect concentration (NOEC) values were 30.3 and 21.5 μg/L. A third experiment, performed with further‐developed larval instars, showed a significant effect of imidacloprid on emergence (with EC10 of 5.97 μg/L and NOEC of 2.89 μg/L) and a significant effect on survival (with median lethal concentration of 44.7 µg/L). The results of the present study show that the newly developed test system provides a suitable approach for toxicity testing with stonefly larvae and potentially for other lotic macroinvertebrate species. Environ Toxicol Chem 2021;40:2229–2239. © 2021 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.
Sprache
Englisch
Identifikatoren
ISSN: 0730-7268
eISSN: 1552-8618
DOI: 10.1002/etc.5070
Titel-ID: cdi_proquest_journals_2553729477
Format
–
Schlagworte
Animals
,
Aquatic insects
,
Chronic effects
,
Chronic toxicity
,
Developmental stages
,
Exposure
,
Imidacloprid
,
Insecta
,
Insecticides
,
Insecticides - analysis
,
Insects
,
Instars
,
Larva
,
Larvae
,
Lotic macroinvertebrates
,
Macroinvertebrates
,
Mimicry
,
Neonicotinoids - toxicity
,
Nitro Compounds - toxicity
,
Protonemura
,
Reproducibility of Results
,
Stonefly larvae
,
Stream conditions
,
Survival
,
Test systems
,
Toxicity testing
,
Toxicology
,
Water
,
Water flow
,
Water Pollutants, Chemical - analysis
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