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Ecological comparisons of Lake Erie tributaries with elevated incidence of fish tumors

Journal of Great Lakes Research

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Abstract

Ecological comparisons were made between two Lake Erie tributaries (Black and Cuyahoga rivers) with contaminated sediments and elevated rates of tumors in fish populations and a third, relatively unpolluted reference tributary, the Huron River. Fish populations, benthic invertebrates, and sediments were evaluated in all three Ohio rivers. Community structure analyses indicated similar total densities but lower species diversity for fish and benthic invertebrates in the contaminated rivers when compared with the reference river. Growth rates in fish from the contaminated areas were either similar to or higher than those of fish from the reference site. Brown bullhead (Ameiurus nebulosus) from the two contaminated tributaries exhibited 51% (Black River) and 45% (Cuyahoga River) incidence of liver lesions (neoplastic and preneoplastic) as compared with a 4% incidence of liver lesions in brown bullhead from the reference river (Huron River). Incidence of external abnormalities on brown bullhead was 54% (Black River) and 73% (Cuyahoga River) as compared with a 14% incidence on fish from the Huron River. On a regional basis, incidence of external abnormalities on particular benthic fish species may be an effective method to quickly indicate areas for more intensive contaminant studies.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Ecological comparisons of Lake Erie tributaries with elevated incidence of fish tumors
Series title:
Journal of Great Lakes Research
Volume
20
Issue:
4
Year Published:
1994
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 701-716
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Great Lakes Research
First page:
701
Last page:
716
Number of Pages:
15