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- W2753009757 abstract "In the Chowan River , North Carolina , the frequency of Microcystis aeruginosa blooms has increased over recent years with an average 1.9°C rise in June water temperatures since 1975. Zooplankton are an important trophic link for toxins to move up the food web. Bosmina longirostris , a dominant zooplankton in the Chowan River , consumes toxic M. aeruginosa cells. This study aimed to understand how microcystin-LR , produced from M. aeruginosa blooms , affects B. longirostris mortality under increasing temperatures. B. longirostris were resistant to microcystin-LR , demonstrating an LC50 of 26.3 [mu]g/L. Therefore B. longirostris can survive typical bloom microcystin-LR concentrations ranging less than 0.1 [micro]g/L to 2.0 [mu]g/L. As temperatures were increased from 25°C to 35°C , microcystin-LR mortality increased approximately 18% from 25-27°C; demonstrating that microcystin-LR was more toxic with increasing temperatures. Above 27°C , mortality also increased , but this was due to the effect of temperature rather than increased toxicity of microcystin-LR. This signifies that during spring , when temperatures are below 27°C and B. longirostris are most abundant , microcystin-LR may be most toxic and may have the greatest influence on the Chowan River food web. Under climate change conditions microcystin-LR may eliminate resistant zooplankton from the food web , putting pressure on larval fish and fisheries." @default.
- W2753009757 created "2017-09-15" @default.
- W2753009757 creator A5033034998 @default.
- W2753009757 date "2017-07-13" @default.
- W2753009757 modified "2023-09-26" @default.
- W2753009757 title "The Effects of Temperature on Microcystin-LR Toxicity to Bosmina Longirostris: Food Web Implications in the Chowan River , North Carolina" @default.
- W2753009757 hasPublicationYear "2017" @default.
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