Effects of oilfield brinewater discharges on western sandpipers (Calidris maun) in Nueces Bay, Texas

1993 1993 Nov 14
Capizzi JL
King KA
Melancon MJ
Rattner BA
LeCaptain L
Society of Environmental Toxicology and Chemistry PU
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Western sandpipers (Calidris maun) were studied at an oilfield brinewater discharge site near Corpus Christi, Texas, and at a reference site near Galveston, Texas. Morphological indices, hepatic mono oxygenase activities, and contaminant burdens were quantified to evaluate exposure and effects. Pooled stomach contents of birds collected at the discharge site contained higher concentrations of petroleum hydrocarbons than the reference site. Total pristane concentration, and the ratio of pristane:n-heptadecane in sandpiper carcasses were significantly greater at the oil discharge site, indicative of chronic exposure. Concentrations of other organic contaminants (petroleum aromatic hydrocarbons, polychlorinated biphenyls and organochlorine pesticides and metabolites) in carcasses at both study sites were relatively low. Neither body weight, bill length or hepatic mono oxygenase activities differed between sites, although liver weight and liver weight:body weight ratio were significantly lower at the discharge site. These data suggest that oilfield brinewater discharges have only limited toxicity to sandpipers wintering near the site. (DBO)

Aromatic hydrocarbons, ASW,USA,Texas,Galveston Bay, Birds, chemical pollutants, contaminants, Hydrocarbon, Hydrocarbons, liver, Metabolites, pesticides, petroleum, Petroleum hydrocarbons, pollution effects, Polychlorinated biphenyls, Q5 01504 Effects on organisms, Risk, Risk assessment, stomach content, Texas, Toxicity, Toxicology, USA