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Toxins 2018, 10(11), 445; https://doi.org/10.3390/toxins10110445

Effect of Increased Temperature on Native and Alien Nuisance Cyanobacteria from Temperate Lakes: An Experimental Approach

1
Institute of Botany, Nature Research Centre, LT-08412 Vilnius, Lithuania
2
Division of Marine Biotechnology, Faculty of Oceanography and Geography, University of Gdańsk, Marszałka J. Piłsudskiego 46, PL-81-378 Gdynia, Poland
*
Authors to whom correspondence should be addressed.
Received: 31 August 2018 / Revised: 27 October 2018 / Accepted: 28 October 2018 / Published: 30 October 2018
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Abstract

In response to global warming, an increase in cyanobacterial blooms is expected. In this work, the response of two native species of Planktothrix agardhii and Aphanizomenon gracile, as well as the response of two species alien to Europe—Chrysosporum bergii and Sphaerospermopsis aphanizomenoides—to gradual temperature increase was tested. The northernmost point of alien species distribution in the European continent was recorded. The tested strains of native species were favoured at 20–28 °C. Alien species acted differently along temperature gradient and their growth rate was higher than native species. Temperature range of optimal growth rate for S. aphanizomenoides was similar to native species, while C. bergii was favoured at 26–30 °C but sensitive at 18–20 °C. Under all tested temperatures, non-toxic strains of the native cyanobacteria species prevailed over the toxic ones. In P. agardhii, the decrease in concentration of microcystins and other oligopeptides with the increasing temperature was related to higher growth rate. However, changes in saxitoxin concentration in A. gracile under different temperatures were not detected. Accommodating climate change perspectives, the current work showed a high necessity of further studies of temperature effect on distribution and toxicity of both native and alien cyanobacterial species. View Full-Text
Keywords: global warming; shallow lakes; Europe; bloom-forming cyanobacteria; cyanotoxins; oligopeptides global warming; shallow lakes; Europe; bloom-forming cyanobacteria; cyanotoxins; oligopeptides
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Savadova, K.; Mazur-Marzec, H.; Karosienė, J.; Kasperovičienė, J.; Vitonytė, I.; Toruńska-Sitarz, A.; Koreivienė, J. Effect of Increased Temperature on Native and Alien Nuisance Cyanobacteria from Temperate Lakes: An Experimental Approach. Toxins 2018, 10, 445.

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