thumbnail

Comparison of mercury concentrations in liver, muscle, whole bodies, and composites of fish from the Red River of the North

Canadian Journal of Fisheries and Aquatic Sciences

By:
, , and
DOI: 10.1139/f95-203

Links

Abstract

: Carp (Cyprinus carpio) from four sites and channel catfish (Ictalurus punctatus) from one site in the Red River of the North in 1994 were analyzed for total mercury content. In carp, mercury concentrations differed among liver, muscle, and whole bodies (0.11, 0.31, and 0.18 µg/g wet weight, respectively), between large and small size groups, but not location. Mercury distribution in channel catfish tissues differed from that in carp. Liver and muscle tissue had similar mean concentrations; each was higher than whole-body concentrations (0.16, 0.18, and 0.11 µg/g, respectively). Mercury concentrations were not significantly different between the two size groups of channel catfish. Weighted-mean mercury concentrations from seven individual fish agreed closely (usually within 10%) with concentrations determined on physical composites of the same fish. The ratio of mercury in whole bodies to mercury in muscle was similar for both carp and channel catfish. Historical data indicate that this ratio may be applicable to other species and locations. The ratio of mercury in livers to whole bodies and muscle differed between carp and channel catfish, which may reflect physiological differences between different trophic groups.

Study Area

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Comparison of mercury concentrations in liver, muscle, whole bodies, and composites of fish from the Red River of the North
Series title:
Canadian Journal of Fisheries and Aquatic Sciences
DOI:
10.1139/f95-203
Volume
53
Issue:
2
Year Published:
1996
Language:
English
Publisher:
NRC Research Press
Description:
9 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Canadian Journal of Fisheries and Aquatic Sciences
First page:
244
Last page:
252
Country:
United States
State:
Minnesota;North Dakota;South Dakota
Other Geospatial:
Red River Of The North