NDLI: Tolerance of genetically characterized Folsomia candida strains to phenmedipham exposure : A comparison between reproduction and avoidance tests

Content Provider	Springer Nature Link
Author	Diogo, João Barateiro Natal da Luz, Tiago Sousa, José Paulo Vogt, Christian wak, Carsten
Copyright Year	2007
Abstract	The springtail Folsomia candida is a commonly used model species in ecotoxicological soil testing. The species reproduces parthenogenetically and, thus, laboratories use different clonal lineages. In this study, we investigated if genetic divergence between F. candida strains impacts the reaction to chemical stress and may thus affect the outcome of toxicity tests.In two exposure assays (life-cycle reproduction test and avoidance behaviour test), three laboratory strains of F. candida from Portugal (PTG), Spain (SPN) and Denmark (DNK) were exposed to different concentrations of the reference chemical phenmedipham. Genetic divergence among strains was estimated based on mitochondrial COI sequence data.No significant differences between tolerance towards phenmedipham exposure were observed in a reproduction test. In contrast, one strain (SPN) showed a decreased susceptibility to phenmedipham compared to the other strains (PTG and DNK) in the avoidance assay.A phylogenetic tree based on mitochondrial COI sequences revealed clear genetic differentiation between both ‘reaction types’. Thus, we found a potential lineage dependent stress reaction in avoidance behaviour towards the pesticide.Our findings have implications for the comparability of test results among laboratories. Reproduction tests seem to be more robust towards interclonal genetic differentiation than avoidance tests.We recommend the use of molecular tools for simple and cost effective genetic characterization of F. candida strains used in chemical avoidance tests. Closer investigations concerning the relation between genetic relatedness and chemical response will provide a more detailed and comprehensive picture on the role of intraspecific genetic differentiation in stress tolerance.
Starting Page	388
Ending Page	392
Page Count	5
File Format	PDF
ISSN	14390108
Journal	Journal of Soils and Sediments
Volume Number	7
Issue Number	6
e-ISSN	16147480
Language	English
Publisher	Ecomed
Publisher Date	2007-09-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Avoidance behaviour chemical tolerance collembolans genetic ecotoxicology genetic variation reproduction test Environmental Physics Environment Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Stratigraphy Earth-Surface Processes

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