Responses of atlantic salmon (Salmo salar) alevins to dissolved organic carbon and dissolved aluminum at low pH
✍ Scribed by R. H. Peterson; R. A. Bourbonnière; G. L. Lacroix; D. J. Martin-Robichaud; P. Takats; G. Brun
- Publisher
- Springer Netherlands
- Year
- 1989
- Tongue
- English
- Weight
- 767 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0049-6979
No coin nor oath required. For personal study only.
✦ Synopsis
M o r t a l i t y of A t l a n t i c salmon alevins in solutions containing A1 and dissolved organic anions (both synthetic and natural) was correlated with A1 accumulation in alevin tissues. Both m o r t a l i t y and accumulation could be related to the concentration differences between A1 and organic anions. M o r t a l i t y and body accumulation of A1 both increased dramatically as t o t a l A1 concentrations increasingly exceeded organic anion concentrations. Alevin growth and yolk u t i l i z a t i o n were both less rapid at inorganic monomeric A1 concentrations exceeding 2 pM (50 ~g L -I ) .
The acidic fractions of dissolved organic matter (DOM) are more e f f e c t i v e in protecting alevins against A1 t o x i c i t y than are the neutral and basic f r a c t i o n s . Ambient inorganic monomeric A1 is probably not toxic to salmon alevins in acidic Nova Scotian streams, even during snow-melt.