The use of rotifers as test species in the aquatic effect assessment of pesticides in the tropics

Moreira, Raquel Aparecida; Mansano, Adrislaine da Silva; Daam, Michiel A.

doi:10.1007/s10750-016-2675-0

Cited by 17 publications

(6 citation statements)

References 52 publications

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“…The same conclusion has previously also been reached for test species battery selection for aquatic tropical risk assessments (e.g. Daam and Rico, 2016;Moreira et al, 2016;OECD, 1998).…”

Section: Earthwormssupporting

confidence: 77%

Environmental risk assessment of pesticides in tropical terrestrial ecosystems: Test procedures, current status and future perspectives

Daam

Chelinho

Niemeyer

et al. 2019

Ecotoxicology and Environmental Safety

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“…The same conclusion has previously also been reached for test species battery selection for aquatic tropical risk assessments (e.g. Daam and Rico, 2016;Moreira et al, 2016;OECD, 1998).…”

Section: Earthwormssupporting

confidence: 77%

Environmental risk assessment of pesticides in tropical terrestrial ecosystems: Test procedures, current status and future perspectives

Daam

Chelinho

Niemeyer

et al. 2019

Ecotoxicology and Environmental Safety

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“…We believe that making it easier for labs to make toxicity measurements will allow their applications to expand and to generate toxicity data on which so many theoretical models depend. Meanwhile, toxicity data for Philodina continues to accumulate, making possible comparisons to other taxa and a relative ranking of the toxicity of a variety of compounds …”

Section: Introductionmentioning

confidence: 99%

Freshwater toxicity testing using rehydratedPhilodinasp. (Rotifera) as test animals

Snell

Johnston

Matthews

2017

Environmental Toxicology

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Rotifers have become widely used in aquatic toxicology as a rapid screening test for toxicity. The commercial availability of diapausing embryos (cysts) have facilitated their popularity because test animals can be obtained without having to master the details of culturing. Other rotifer species have life stages capable of surviving desiccation and also could be used in non-culture systems for toxicity assessment. In this article, we describe a system for toxicity testing in freshwater based on rehydrating desiccated bdelloid rotifers in the genus Philodina. These animals can remain in this anhydrobiotic state for more than one year and then rehydrate within hours to provide animals for toxicity tests. We describe three endpoints: a 1.5 h ingestion test, a 24 h mortality test, and a five day reproductive test. The latter test requires feeding and a method using a dried commercial product is explained. Using desiccated rotifers and dried food in toxicity tests make this system especially attractive because of its flexibility and low threshold of biological expertise required to execute the tests. The use of the Philodina toxicity test is illustrated with four metals: copper, lead, mercury and cadmium. Reproduction generally was the most sensitive endpoint, with EC50s of 0.33, 0.44, 0.60, and 0.12 mg/L, respectively. Ingestion was a close second with EC50s of 0.13, 1.64, 0.64, and 6.26 mg/L, respectively.

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“…While rotifers are used routinely worldwide for toxicity studies, they are predominantly monogonont rotifers, and standard test protocols for rotifers are only developed for two monogonont species (Moreira, da Silva Mansano, et al, 2016). Bdelloid rotifers are less commonly used, with most studies utilizing temperate species from the genus Philodina and occasionally Adineta vaga (Rico-Martínez et al, 2016), meaning comparisons of sensitivity of bdelloids to metals are somewhat limited.…”

Section: Discussionmentioning

confidence: 99%

High Sensitivity of the Antarctic Rotifer Adineta editae to Metals and Ecological Relevance in Contaminated Site Risk Assessments

Brown

Koppel

Price

et al. 2023

Environmental Toxicology and Chemistry

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Anthropogenic activities in Antarctica have led to contamination of terrestrial sites, and soils in ice‐free areas have elevated concentrations of metals, particularly around current and historic research stations. Effective management of Antarctic contaminated sites depends on the assessment of risks to a representative range of native terrestrial species. Bdelloid rotifers are an abundant and biodiverse component of Antarctic limnoterrestrial communities and play a key role in nutrient cycling in Antarctic ecosystems. The present study investigates the toxicity of five metals (cadmium, copper, nickel, lead, and zinc) to the endemic bdelloid rotifer Adineta editae, both singly and in metal mixtures. Based on the concentrations tested, zinc was the most toxic metal to survival with a 7‐day median lethal concentration (LC50) of 344 µg Zn/L, followed by cadmium with a 7‐day LC50 of 1542 µg Cd/L. Rotifers showed high sensitivity using cryptobiosis (chemobiosis) as a sublethal behavioral endpoint. Chemobiosis was triggered in A. editae at low metal concentrations (e.g., 6 µg/L Pb) and is likely a protective mechanism and survival strategy to minimize exposure to stressful conditions. Lead and copper were most toxic to rotifer behavior, with 4‐day median effect concentrations (EC50s) of 18 and 27 µg/L, respectively, followed by zinc and cadmium (4‐day EC50 values of 52 and 245 µg/L, respectively). The response of rotifers to the metal mixtures was antagonistic, with less toxicity observed than was predicted by the model developed from the single‐metal exposure data. The present study provides evidence that this bdelloid rotifer represents a relatively sensitive microinvertebrate species to metals and is recommended for use in contaminant risk assessments in Antarctica. Environ Toxicol Chem 2023;42:1409–1419. © 2023 SETAC

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The use of rotifers as test species in the aquatic effect assessment of pesticides in the tropics

Cited by 17 publications

References 52 publications

Environmental risk assessment of pesticides in tropical terrestrial ecosystems: Test procedures, current status and future perspectives

Environmental risk assessment of pesticides in tropical terrestrial ecosystems: Test procedures, current status and future perspectives

Freshwater toxicity testing using rehydratedPhilodinasp. (Rotifera) as test animals

High Sensitivity of the Antarctic Rotifer Adineta editae to Metals and Ecological Relevance in Contaminated Site Risk Assessments

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