PH16 Ecological Risk Assessment and Landscape Ecological Modeling
Exhibit Hall
8:00 AM - Thursday
(PH187) Trace metals in Wyoming fish.
Dailey, B.1, Raisbeck, M.1, Siemion, R.1, Wolff, S.2, 1 Wyoming State Veterinary Lab, Laramie, Wyoming, USA2 Wyoming Game and Fish Department, Cheyenne, Wyoming, USA
ABSTRACT- A screening survey was conducted to determine the concentration of various metals in the edible portion of Wyoming gamefish. The Wyoming Game and Fish department collected fish from 28 waterbodies throughout Wyoming during the 2000 and 2001 field season. Nine samples exceeded the screening value for Hg. Only one other sample was found to exceed a screening value, that being the noncarcinogen screening value for As. Samples originating from the Laramie Plains Lakes in southeastern Wyoming contained slightly elevated selenium concentrations; however, none exceeded the screening value. None of the other metal concentrations in the survey including V, Cr, Mn, Fe, Ni, Co, Cu, Zn, Se, Mo, Cd, Ba, Tl, or Pb exceeded their respective screening values. Species included in the study black crappie (Pomoxis nigromaculatus), brown trout (Salmo trutta), channel catfish (Ictalurus punctatus), kokanee (Salmo trutta), lake trout (Salvelinus namaycush), rainbow trout (Oncorhynchus mykiss), smallmouth bass (Micropterus dolomieu), Snake River cutthroat trout (Oncorhynchus clarki), walleye (Stizostedion vitreum), yellow perch (Perca flavescens), and Yellowstone cutthroat trout (Oncorhynchus bouvieri).
Key words: fish, metals, consumption, screening survey