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Document Title:
Tumor Prevalence in Brown Bullheads (Ameiurus nebulosus) from Darby Creek, John Heinz NWR at Tinicum, Philadelphia, PA
AUTHOR(S):
Alfred E. Pinkney John C. Harshbarger Mark R. Roberts
REPORT NUMBER:
CBFO-C04-03, PAFO-C04-
PAGES:
1 - 37
PUBLICATION DATE:
August 2004
ABSTRACT:
The John Heinz National Wildlife Refuge at Tinicum (JHNWRT) is located along Darby Creek
near its confluence with the Delaware River, south of Philadelphia, Pennsylvania (USA). The
Refuge hosts the largest freshwater tidal marsh in Pennsylvania, about 142 hectares. A 3.2 km
reach of Lower Darby Creek was listed as an Environmental Protection Agency Superfund site in
2001 due to a history of contamination. In June 2003, for an assessment of habitat quality, we collected 31 brown
bullheads (Ameiurus nebulosus) > 260 mm total length, from a 1.6 km stretch of Darby Creek
near the middle of the Superfund area. The objective was to determine the prevalence of liver
and skin tumors, preneoplastic lesions, and barbel abnormalities.
PUBLISHED BY:
U.S. Fish and Wildlife Service
DOCUMENT LINK:
http://www.fws.gov/chesapeakebay/pdf/CBFO-CO403.pdf, 2 MB
ADDITIONAL LINKS:
U.S. Fish and Wildlife Service - Chesapeake Bay Field Office
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