Contaminant Concentrations In, and Effects On, Yellow Perch (Perca Flavescens (Mitchill)) and Spottail Shiner (Notropis Hudsonius (Clinton)) of the St. Lawrence River
註釋 Within the framework of the Inland Waters Directorate's, Quebec Region, mandate for the study of toxic chemicals in the St. Lawrence River, young-of-the-year fish have been sampled during September 1986. In the first part of the document the results of the organochlorine and heavy metal residues in young-of-the-year spottail shiner and yellow perch are discussed. The second part discusses the result of the backbone analyses for yellow perch. Backbones were analyzed for collagen and hydroxyproline contents, because these concentrations can be altered through exposure to contaminants. In this study, no differences were found between a reference (clean) and a more polluted station, nor any correlation between pollution and deformities of the back bones (investigated by means of X-rays). 