Catostomus commersoni

White sucker, Catostomus commersoni northern Ontario September, 1986 copper-contaminated site (water 9.7 pg Cu/L, sediments 232 mg/kg DW) vs. reference site (2.1 pg/L water, 10 mg/kg DW sediments) ... 

Miller, P.A., K.R. Munkittrick, and D.G. Dixon. 1992. Relationship between concentrations of copper and zinc in water, sediment, benthic invertebrates, and tissues of white sucker (Catostomus commersoni) at metal-contaminated sites. Canad. Jour. Fish. Aquat. Sci. 49 978-984. 

Water hardness 36 mg CaC03, 75-136 pg Pb/L, lifetime exposure White sucker, Catostomus commersoni MATC 16... 

Duncan, D.A. and J.F. Klaverkamp. 1983. Tolerance and resistance to cadmium in white suckers (Catostomus commersoni) previously exposed to cadmium, mercury, zinc, or selenium. Canad. Jour. Fish. Aquat. Sci. 40 128-138. 

White sucker, Catostomus commersoni muscle near smelter vs. reference site... 

Munkittrick, K.R. and D.G. Dixon. 1989. Effects of natural exposure to copper and zinc on egg size and larval copper tolerance in white sucker (Catostomus commersoni). Ecotoxicol. Environ. Safety 18 15-26. 

Medaka, Oryzias latipes 949 vs. 455 White sucker, Catostomus commersoni ... 

Servos, M.R., S.Y. Huestis, D.M. Whittle, GJ. Van der Kraak, and K.R. Munkittrick. 1994. Survey of receiving-water environmental impacts associated with discharges from pulp mills. 3. Polychlorinated dioxins and furans in muscle and liver of white sucker (Catostomus commersoni). Environ. Toxicol. Chem. 13 1103-1115. 

Sediments and biota collected from the Hersey River, Michigan, in 1978, were heavily contaminated with phenanthrene, benz[a]anthracene, and benzo[a]pyrene when compared to a control site. Elevated PAH concentrations were recorded in sediments, whole insect larvae, crayfish muscle, and flesh of lampreys (family Petromyzontidae), brown trout (Salmo trutta), and white suckers (Catostomus commersoni), in that general order (Black et al. 1981). The polluted collection locale was the former site of a creosote wood preservation facility between 1902 and 1949, and, at the time of the study, received Reed City wastewater treatment plant effluent, described as an oily material with a naphthalene-like odor (Black et al. 1981). In San Francisco Bay, elevated PAH concentrations in fish livers reflected elevated sediment PAH concentrations (Stehr et al. 1997). In Chesapeake Bay, spot (Leiostomus xanthurus) collected from a PAH-contaminated tributary (up to 96 mg PAHs/kg DW sediment) had elevated cytochrome P-450 and EROD activity in liver and intestine microsomes (Van Veld et al. 1990). Intestinal P-450 activity was 80 to 100 times higher in fish from highly contaminated sites than in conspecifics from reference sites intestinal EROD activity had a similar trend. Liver P-450 and EROD activity was about 8 times higher in spot from the contaminated sites when compared to the reference sites. Liver P-450 activity correlated positively with sediment PAH, but intestinal P-450 activity seemed to reflect dietary exposure (Van Veld et al. 1990). The poor correlation between hepatic concentrations of PAHs and P-4501A is attributed to the rapid metabolism of these compounds (van der Weiden et al. 1994). 

Kirby, G.M., J.R. Bend, I.R. Smith, and M.A. Hayes. 1990. The role of glutathione s-transferases in the hepatic metabolism of benzo[a]pyrene in white suckers (Catostomus commersoni) from polluted and reference sites in the Great Lakes. Comp. Biochem. Physiol. 95C 25-30. 

Toxaphene elimination rates vary between species. In rats, the half-time persistence of toxaphene (time to 50% excretion = Tb 1/2) was 1 to 3 days (USEPA 1980a). If the trend persisted, virtually all toxaphene would be eliminated in five half-lives. Elevated blood toxaphene levels in a human subject who had eaten catfish fillets containing 52 mg of toxaphene/kg dropped 67% in 11 days. By 14 days after the initial measurement, toxaphene blood levels were below analytical detection limits (USEPA 1980a). Persistence seems to be longer in some fishes. Lake trout (Salvelinus namaycush) given a single intraperitoneal injection of 7 mg toxaphene/kg BW had a Tb 1/2 of 322 days for white suckers (Catostomus commersoni), this value was 524 days (Delorme et al. 1993). 

Sacramento blackfish, Orthodon microlepidotus White sucker, Catostomus commersoni 0.7 DW 50... 

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