Exposure of fish to biologically treated bleached-kraft effluent; 1: Biochemical, physiological and pathological assessment of Rocky Mountain whitefish (Prosopium williamsoni) and longnose sucker (Catostomus catostomus)
- Procter Gamble Co., Cincinnati, OH (United States)
- SENTAR Consultants Ltd., Calgary, Alberta (Canada)
- Univ. of Saskatchewan, Saskatoon (Canada). Dept. of Biology
- SENTAR Consultants Ltd., Saskatoon, Saskatchewan (Canada)
A suite of biochemical, physiological, and pathological measures was used to assess possible effects of exposure to bleached-kraft mill effluent (BKME) on wild longnose sucker (Catostomus catostomus=LS) and mountain whitefish (Prosopium williamsoni=MW) in the Wapiti/Smoke River system, as compared to similar populations in a reference river system without BKME inputs. Individual fish body burden data were examined for correlations between chemical exposure and biological response. General incidence of gross pathology and histopathology showed no relationship with exposure to BKME, and no neoplastic or preneoplastic lesions were observed in either exposed or reference fish. The few significant differences observed in LS blood parameters were not correlated with exposure to BKME and appeared to reflect habitat gradients. Liver somatic indexes were higher for female BKME-exposed LS, but were not significantly different in male LS nor in MW. Some differences in circulating sex steroid levels were observed in LS exposed to BKME (but not in MW, the species with higher contaminant body burdens). Steroid profile differences may have been related to natural differences in duration of spawning periods in the two fish populations. Other measures of reproductive capacity (relative gonad size, fecundity, young-of-the-year) showed no reductions in exposed fish. The detoxification enzyme cytochrome P4501A was induced in both species, with greater induction in MW than in LS. MW P4501A induction correlated well with some BKME exposure measures, but not with liver or gonad weights, pathology, reproductive capacity, or population-level parameters. Increased liver size and apparent differences in sex steroid profiles in LS did not translate to other health effects or population-level effects. Thus, exposure to this biologically treated BKME produced one consistent biochemical marker of exposure in the two fish species that was not associated with any adverse effects on fish health.
- OSTI ID:
- 7010099
- Journal Information:
- Environmental Toxicology and Chemistry; (United States), Vol. 13:9; ISSN 0730-7268
- Country of Publication:
- United States
- Language:
- English
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63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALBERTA
RIVERS
CHLORINATED AROMATIC HYDROCARBONS
TOXICITY
DIOXIN
FISHES
SENSITIVITY
FURANS
METALS
WATER POLLUTION
CHEMICAL EFFLUENTS
INDUSTRIAL WASTES
PAPER INDUSTRY
SEX DEPENDENCE
ANIMALS
AQUATIC ORGANISMS
AROMATICS
CANADA
CHEMICAL WASTES
DEVELOPED COUNTRIES
ELEMENTS
HALOGENATED AROMATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
INDUSTRY
NONRADIOACTIVE WASTES
NORTH AMERICA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
POLLUTION
STREAMS
SURFACE WATERS
VERTEBRATES
WASTES
WOOD PRODUCTS INDUSTRY
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
560300 - Chemicals Metabolism & Toxicology