Parasite survey of fathead minnows, golden shiners, and white suckers used as bait in Wisconsin

parasites;Baitfish

Purdy, Abby M.Lasee, Becky ;

University of Wisconsin

关键词: parasites;    Baitfish;   

Others  :  https://minds.wisconsin.edu/bitstream/handle/1793/57156/PurdyAbby2011.pdf?sequence=1&isAllowed=y

瑞士|英语

来源: University of Wisconsin

【 摘 要 】

The purpose of this study was to identify and describe parasites species in three Wisconsinbaitfish species from five different baitfish sources. Baitfish examined were fathead minnow(Pimephales pramelas), golden shiner (Notemigonus crysoleucas), and white sucker (Catostomus commersoni) from either wild, hatchery, wholesale, import, or retail sources throughout Wisconsin and the North Central Region (NCR). A total of 350 baitfish were sampled from five sources within two states (WI and MN) and at least 20 fish of each baitfish specieswere necropsied. There was no statistical difference in mean prevalence among baitfishsources for all host species combined and for each of the baitfish species. AN OVA resultsdemonstrated that mean abundance and mean intensities differed significantly among sourcesfor both fathead minnow and white sucker. Two parasite species occurred, Neascus spp. andOrnithodiplostomum ptychocheilus, across all five baitfish sources. Five parasite species wereobserved within all three baitfish species (Hysteromorpha tri/oba, Myxobolus spp., Neascusspp., Neoechinorhynchus spp. and Spiroxys spp.). From results a list of baitfish parasite specieswas generated and potential transfer pathways between sources were identified. Naturalresource management within the NCR can use the baseline knowledge to possibly generatemanagement strategies (e.g., pathogen screening, baitfish health certificates) aimed atrecognizing baitfish/parasite transfer risks or pathogen screening protocol used prior tobaitfish transfer.