The effects of Anabaena spiroides (Cyanophyceae) exopolysaccharide on copper toxicity to Simocephalus serrulatus (Cladocera, Daphnidae)
Summary 1. This work investigated the consumption of a microalgal (Anabaena spiroides) exopolysaccharide by the cladoceran Simocephalus serrulatus (Cladocera, Daphnidae) and its effect on copper toxicity. 2. Total organic carbon concentration was used to quantify the microalgal exopolysaccharide. Bo...
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Published in | Freshwater biology Vol. 50; no. 9; pp. 1560 - 1567 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
Oxford, UK
Blackwell Science Ltd
01.09.2005
Blackwell Science Wiley Subscription Services, Inc |
Subjects | |
Online Access | Get full text |
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Summary: | Summary
1. This work investigated the consumption of a microalgal (Anabaena spiroides) exopolysaccharide by the cladoceran Simocephalus serrulatus (Cladocera, Daphnidae) and its effect on copper toxicity.
2. Total organic carbon concentration was used to quantify the microalgal exopolysaccharide. Both copper‐complexed exopolysaccharides and copper‐free exopolysaccharides were taken up by S. serrulatus.
3. A reduction of free copper ions was obtained in the presence of A. spiroides exopolysaccharide. Copper toxicity (EC50) and zooplankton concentrations were inversely correlated to exopolysaccharide concentration in experimental media.
4. An increase of free copper ions in experimental media was obtained after exopolysaccharide consumption, suggesting that S. serrulatus excreted copper to the surrounding environment. |
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Bibliography: | istex:B9F9BE39BB5F7F5EA3529572D77C081B801976A4 ArticleID:FWB1406 ark:/67375/WNG-FF7L02JQ-6 ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
ISSN: | 0046-5070 1365-2427 |
DOI: | 10.1111/j.1365-2427.2005.01406.x |