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Toxicity of six pesticides to common frog (Rana temporaria) tadpoles
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Population and Conservation Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Population and Conservation Biology.
2006 (English)In: Environmental Toxicology and Chemistry, ISSN 0730-7268, E-ISSN 1552-8618, Vol. 25, no 12, 3164-3170 p.Article in journal (Refereed) Published
Abstract [en]

Amphibian species inhabiting agricultural areas may be exposed to pesticides during their aquatic larval phase. We tested the toxicity of six commonly used pesticides on Rana temporaria spawn and tadpoles. In acute tests, tadpoles were exposed to relatively high concentrations of azoxystrobin, cyanazine, esfenvalerate, MCPA ([4-chloro-2-methylphenoxyl acetic acid), permethrin, and pirimicarb for 72 h. Chronic exposure tests were performed from fertilization to metamorphosis with azoxystrobin, cyanazine, and permethrin at concentrations similar to those found in surface waters in agricultural areas in Sweden. The most lethal pesticides in the acute exposure were azoxystrobin, permethrin, and pirimicarb. Also, negative effects on the growth of the tadpoles were observed with azoxystrobin, cyanazine, and permethrin. The chronic exposure at lower pesticide concentrations did not result in increased mortality or impaired growth. However, we found a positive effect of permethrin on growth and size at metamorphosis. The results suggest that the examined pesticides can inflict strong negative effects at high concentrations but have no or relatively weak effects on R. temporaria spawn or tadpoles at concentrations found in Swedish surface waters.

Place, publisher, year, edition, pages
2006. Vol. 25, no 12, 3164-3170 p.
Keyword [en]
amphibians, chronic exposure, acute toxicity, sublethal effects
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-23181DOI: 10.1897/05-685R1.1ISI: 000242050000011PubMedID: 17220085OAI: oai:DiVA.org:uu-23181DiVA: diva2:50955
Available from: 2007-01-25 Created: 2007-01-25 Last updated: 2017-12-07Bibliographically approved

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Johansson, Markus

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