Journal of Aquatic Pollution and Toxicology Open Access

Department of U.S. Geological Survey, Colorado Cooperative Fish and Wildlife Research Unit, Fort Collins, USA

Publications

• Research Article   
  Effects of 17?-ethinylestradiol and Density on Juvenile Fathead Minnow Survival and Body Size
  Author(s): Tawni B. Riepe*, Brian W. Avila and Dana L. Winkelman
  
  Anthropogenic changes have led to the increased use of wastewater treatment plants in stream systems near urbanized areas. Synthetic oral contraceptives, observed in wastewater treatment effluents, can cause negative effects on fish life history metrics. Previous exposures of 17α-ethinylestradiol (EE2) have been shown to affect survival and reproduction of fathead minnows (Pimephales promelas). However, density effects were not considered, and additional research is needed to examine the role of density among fish exposed to EE2. Multiple hypotheses indicate the interaction of density with contaminant exposure may ameliorate or exacerbate mortality. We examined how nominal EE2 concentrations of 0 ng/L, 5 ng/L, and 10 ng/L affect body size and mortality at various densities. Fish body size was influenced by density but not EE2 exposure. When density .. View More»
  

  DOI: 10.21767/2581-804X.22.6.60

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