Year Established: 2011 Start Date: 2011-03-01 End Date: 2012-02-29
Total Federal Funds: $9,616 Total Non-Federal Funds: $21,820
Principal Investigators: Theo Light
Abstract: Emerging contaminants in Pennsylvania waters include numerous pharmaceuticals, personal care products, and other common chemicals with potential endocrine activity, even at low concentration. Recent concern about these contaminants has focused on their presence and concentration in treated wastewater and on their effects on wildlife, particularly fish. We propose to survey fish (white sucker, Catostomus commersoni) for reproductive anomalies in sites upstream and downstream of several south-central Pennsylvania wastewater treatment plants that discharge into small streams. All three streams have been identified in a recent USGS survey as containing detectable but varying levels of multiple pharmaceuticals and antibiotics in effluent-influenced sites. We further propose to analyze tissues of collected fish for stable isotopes of carbon and nitrogen in order to determine the proportion of fish diets directly or indirectly derived from sewage-derived organic matter. By examining associations of the severity of reproductive anomalies with a well-established measure of dietary exposure to sewage effluent, and also with USGS contaminant measures in each stream, we hope to establish a robust link between exposure to effluent-derived pharmaceuticals and markers of estrogen disruption in fish.