Effects of excessive sedimentation on the growth and stress response of whitetail shiner (Cyprinella galactura) juveniles
Sutherland, Andrew B.
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This study investigates the effects of increased suspended sediment concentration (SSC = 0, 25, 50, 100, and 500 mg/L) on the growth and physiological stress of Cyprinella galactura. Correlation analyses show a significant negative relationship between mean daily growth rate of C. galactura and suspended sediment concentration, and a significant positive relationship between SSC and stress, measured as whole-body cortisol concentration. Mean daily growth rates and mean cortisol levels of juvenile C. galactura differ significantly among SSC treatments. Growth rates were significantly higher and cortisol levels were significantly lower at the 500 mg/L treatment level.