Red River Delta Fish Parasite Results

• Main Authors: Dick, Terry A., Gallagher, Colin, Watkinson, Douglas, Franzin, William
• Format: Report
• Language: English
• Published: 2007
• Subjects: Red River Delta; Fish Parasite; Lake Winnipeg; Hudson; Hudson Bay; Williamson
• Online Access: http://hdl.handle.net/1993/30095

Summary • Twenty-six species of parasites were recovered from nine species of fish hosts. • To date none ofthe fish parasites identified as potential pathogens to Lake Winnipeg fish by Williamson et al (2005) have been found in the Red River delta fish samples. • Two new parasites species know to be pathogenic in fish were discovered in the samples i e. Bothriocephalus acheilognathi and Sanginicola occidentalis. • The time of invasion by these two parasite species into The Hudson Bay drainage is unknown • Bothriocephalus acheilognathi was widely distributed being present in six species of fish and found in the south and north basins of Lake Winnipeg. • Bothriocephalus acheilognathi most frequently infected (prevalence of 74%) the cyprinid fish host, Notropis atherinoides (Emerald shiner). • Bothriocephalus acheilognathi was found exclusively in young of the year emerald shiners. • Bothriocephalus acheilognathi was recovered from the intestine of older and and larger pike (Esox lucius), walleye (Sander vitreum), sauger (!>ander canadensis) white bass (Merone chrysops), goldeye (Hiodon alosoides). • The Myxozoan occurred on the gills of emerald shiner, occasionally causing severe pathology.