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Multigenerational effects of carbendazim in daphnia magna: from a subcellular to a population level

Silva, Ana Rita R., Santos, Catia and Ferreira, Nuno 2019. Multigenerational effects of carbendazim in daphnia magna: from a subcellular to a population level. Environmental Toxicology and Chemistry 38 (2) , pp. 412-422. 10.1002/etc.4307

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Abstract

Anthropogenic activities such as the use of pesticides may affect in some way aquatic biota populations, due to potential agricultural runoffs or disposals. Carbendazim is one example of a widely used fungicide with a high potential to end up in aquatic ecosystems through runoff. Deleterious effects observed at the individual level are possibly explained by changes in homeostasis at cellular and both can then be used to predict effects at the population level. In the present study, an isoclonal population of Daphnia magna (clone k6) was exposed to concentration that mimics relevant levels of carbendazim in the environment during twelve generations. The effects of carbendazim on biochemical biomarkers (cholinesterase, catalase and glutathione S‐transferase), lipid peroxidation and energy‐related parameters (carbohydrates, lipids and proteins jointly with energy available and energy consumption), parental longevity, and population growth (r) were assessed in some generations. The long‐term exposure to carbendazim presented no effect on the intrinsic rate of natural increase (r) of adult D. magna However, daphnids longevity decreased at the F12 when compared to daphnids from control. Cholinesterases, glutathione S‐transferase and lipid peroxidation showed differences between the exposed and non‐exposed populations. However, for catalase and energy related‐parameters no differences were observed between these two populations. Natural variability was observed throughout the test period, under control conditions, within the twelve generations. Overall, carbendazim induced some effects at the subcellular level that were translated to longevity, but latter vanishing in terms of population effects.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Publisher: Wiley
ISSN: 0730-7268
Funders: FCT
Date of First Compliant Deposit: 19 March 2019
Date of Acceptance: 29 October 2018
Last Modified: 03 Dec 2019 03:29
URI: http://orca-mwe.cf.ac.uk/id/eprint/117716

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