Field Testing of Protocols to Prevent the Spread of Zebra Mussels Dreissena polymorpha during Fish Hatchery and Aquaculture Activities

摘要: Abstract The zebra mussel Dreissena polymorpha, an introduced, aquatic bivalve species, causes changes in the ecology and negatively impacts economic value of infected water bodies. Unfortunately, spread can be facilitated by aquaculture activities. We field-tested effectiveness chemical treatment protocols established to prevent microscopic larvae (veligers) during fish stocking. achieved more realistic exposure conditions performing veliger toxicity tests aerated 750-L tanks on hatchery tanker trucks using treatments earlier laboratory work. Posttreatment survival was measured for veligers tanks, followed assessment walleye Stizostedion vitreum saugeye (sauger S. canadense × walleye) 5 d after stocking into 4,000-m2 ponds. A 1-h pretreatment 750 mg/L KCl a 2-hr 25 formalin effective killing without...