Skip to Main Content
Preliminary biochemical observations of fishes inhabiting an acidified lake in Ontario, CanadaAuthor(s): W. L. Lockhart; A. Lutz
Source: In: Dochinger, L. S.; Seliga, T. A., eds. Proceedings of the first international symposium on acid precipitation and the forest ecosystem; Gen. Tech. Rep. NE-23. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 545-569
Publication Series: General Technical Report (GTR)
Station: Northeastern Research Station
PDF: Download Publication (1.01 MB)
DescriptionBlood serum and other tissues of white suckers (Catostomus commersoni) and other species of fish have been examined in a preliminary effort to understand losses of fish from acid lakes. Maturing females of highly acid George Lake failed to show the normal degree of increase in serum calcium over males captured in the same location. Elevated serum calcium was always observed in females, relative to males, from nonacid locations when maturation stages were similar. A number of body tissues were examined to determine whether the distributions of calcium or other elements were altered and the only striking change evident in fish from George Lake was their high manganese content. Bone in particular was examined for N, Na, Mg, P, K, and Ca and no evidence of demineralization was found. Other tests such as hemoglobin indicated that an anticipated adaptive response to asphyxia was absent. Our results indicated that potential mechanisms of fish losses such as asphyxia and starvation are unlikely to have been significant. However, they do not firmly establish any alternate mechanism. As a working hypothesis we suggest that calcium dynamics may limit ovarian development and that absorption of this metal at exchange surfaces may be impaired.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationLockhart, W. L.; Lutz, A. 1976. Preliminary biochemical observations of fishes inhabiting an acidified lake in Ontario, Canada. In: Dochinger, L. S.; Seliga, T. A., eds. Proceedings of the first international symposium on acid precipitation and the forest ecosystem; Gen. Tech. Rep. NE-23. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 545-569
- Acidification of lakes in Canada by acid precipitation and the resulting effects on fishes
- Fish and aquatic organisms [Chapter 9]
- Native montane fishes of the Middle Rio Grande Ecosystem: Status, threats, and conservation
XML: View XML