Changes in growth, secondary sex characteristics, and reproduction of fathead minnows exposed for a life cycle to bleached sulfite mill effluent

Journal of Toxicology and Environmental Health. Part a
Joanne ParrottSusan Dunn

Abstract

To assess the potential effects of exposure to bleached sulfite mill effluent, long-term fathead minnow (Pimephales promelas) exposures were carried out on-site at the pulp mill secondary treatment lagoons. Exposure concentrations included 0, 1, 3, 10, 30, 50, or 100% final effluent, with the synthetic estrogen ethinylestradiol (10 ng/L) as a positive control compound. Fertilized minnow eggs were hatched in effluent and monitored through 140 d posthatch. The effluent produced a significant increase in the growth (length, weight, condition factor) of female fish (but not male fish). Exposure to high effluent concentrations resulted in a majority of fish with female secondary sex characteristics. Male fish with female characteristics and female fish with male sex characteristics were present at effluent concentrations of > or = 30%, but not in fish exposed to control water from the Saint John River. Effluent exposures (> or = 30%) also produced a reduction in the number of fish with testes, and most fish had ovaries when examined internally. A sensitive and meaningful endpoint was a decrease in reproduction. Fish exposed to 1 - 3% effluent produced a similar number of eggs to control fish; however, exposure to 10% effluent reduce...Continue Reading

References

Sep 1, 1989·Bulletin of Environmental Contamination and Toxicology·S A BortoneC M Bundrick
Oct 1, 1989·Bulletin of Environmental Contamination and Toxicology·D T Drysdale, S A Bortone
Dec 6, 1996·Journal of Toxicology and Environmental Health·T G KovacsR H Voss
Mar 1, 1997·Bulletin of Environmental Contamination and Toxicology·R P Cody, S A Bortone
Jan 10, 2004·Environmental Toxicology and Chemistry·Joanne L ParrottSusan Dunn
Jan 17, 2009·Integrated Environmental Assessment and Management·Dennis L BortonWilliam R Streblow

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Citations

May 29, 2008·Archives of Environmental Contamination and Toxicology·Shinya HashimotoAkihiko Hara
Feb 26, 2003·Comparative Biochemistry and Physiology. Toxicology & Pharmacology : CBP·A C Pryce-HobbyG Van Der Kraak
May 26, 2006·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Joanne L ParrottL Mark Hewitt
May 26, 2006·Journal of Toxicology and Environmental Health. Part B, Critical Reviews·Mark E McMasterJoanne L Parrott
Mar 25, 2009·Journal of Toxicology and Environmental Health. Part a·J L Parrott, D T Bennie
Mar 1, 2011·General and Comparative Endocrinology·Luigi Margiotta-Casaluci, John P Sumpter

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