DEBtox theory and matrix population models as helpful tools in understanding the interaction between toxic cyanobacteria and zooplankton

Journal of Theoretical Biology
Elise BilloirSandrine Charles

Abstract

Bioassays were performed to find out how field samples of the toxic cyanobacteria Microcystis aeruginosa affect Moina micrura, a cladoceran found in the tropical Jacarepagua Lagoon (Rio de Janeiro, Brazil). The DEBtox (Dynamic Energy Budget theory applied to toxicity data) approach has been proposed for use in analysing chronic toxicity tests as an alternative to calculating the usual safety parameters (NOEC, ECx). DEBtox theory deals with the energy balance between physiological processes (assimilation, maintenance, growth and reproduction), and it can be used to investigate and compare various hypotheses concerning the mechanism of action of a toxicant. Even though the DEBtox framework was designed for standard toxicity bioassays carried out with standard species (fish, daphnids), we applied the growth and reproduction models to M. micrura, by adapting the data available using a weight-length allometric relationship. Our modelling approach appeared to be very relevant at the individual level, and confirmed previous conclusions about the toxic mechanism. In our study we also wanted to assess the toxic effects at the population level, which is a more relevant endpoint in risk assessment. We therefore incorporated both lethal an...Continue Reading

References

Jun 1, 1992·The Journal of Applied Bacteriology·W W Carmichael
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Aug 4, 2001·Environmental Health Perspectives·W W CarmichaelG K Eaglesham
Jun 24, 2004·Environmental Science & Technology·Tjalling JagerSebastiaan A L M Kooijman
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Jun 2, 2006·Ecotoxicology·Tjalling JagerSebastiaan A L M Kooijman
May 5, 2007·Integrated Environmental Assessment and Management·John M Emlen, Kathrine R Springman
Jun 24, 2008·Journal of Theoretical Biology·Elise BilloirSandrine Charles

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Citations

Jun 1, 2014·Toxicon : Official Journal of the International Society on Toxinology·Aloysio S Ferrão-FilhoLuis Fernando Echeverri
Jun 8, 2014·Ecotoxicology·Wen-Hsuan LiVivian Hsiu-Chuan Liao
Nov 2, 2017·Environmental Science. Processes & Impacts·Roman Ashauer, Tjalling Jager

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