Table 4. Aquatic Nuisance Species – Fish Pathogens Pathogen Species - Viral Affected CT Fish Likely Host Organisms Most Likely Vectors Infectious Salmon Anemia ats anadromous ATS and eggs Commercial/Government transfers Viral Hemorrhagic Septicemia Virus rbt,bnt,ats,bkt,np fish and salmonid eggs Commercial/Government transfers Infectious Hematopoietic Necrosis Virus kok,ats,bkt,bnt salmonid fish and eggs Commercial/Government transfers Infectious Pancreatic Necrosis Virus bkt,bnt,rbt fish/salmonid eggs/crus/moll Commercial/Government transfers Channel Catfish Virus cc channel catfish Commercial catfish transfers Herpesvirus salmonis (Type 1 and 2) kok,rbt salmonid fish and eggs Commercial/Government transfers Largemouth bass virus lmb largemouth bass Commercial transfers/Club tournaments Salmon Sarcoma Virus ats ats Commercial/Government transfers Pathogen Species - Bacterial Edwardsiella tarda cc,lmb,sb,f,rbt fish/aq inverts/marine+fresh Commercial fish transfers Enteric septicemia (Edwardsiella ictaluri) cc,wc,bb,yb,bkb catfish species/tilapia Commercial catfish transfers Hitra disease (Vibrio salmonicida) ats,rbt marine ats and rbt Commercial/Government transfers Bacterial Kidney disease (R. salmoninarum)* all salmonids salmonid fish and eggs Commercial/Government transfers Enteric Redmouth (Y. ruckeri)* rbt,bkt,bnt,ats,kok,we all salmonids Pathogen Species - Parasitic Ceratomyxosis – C. shasta rbt,ats,bnt,bkt salmonid fish Commercial/Government transfers Asian Tapeworm – B. acheilognathi gc,cyprinids,bass? primarily cyprinids Commercial Grass carp/bait fish transfers Proliferative Kidney disease rbt,ats,bnt,np salmonid fish Commercial/Government transfers Hexamitosis young salmonids fish Commercial/Government/Aquarium transfers Whirling disease (M. cerebralis)* bkt,rbt all salmonids Commercial/Government transfers Proliferative Gill disease cc channel catfish Commercial transfers *These pathogens have occurred or do occur in CT but still pose a threat to cultured and wild stocks of fish in the state. Warm water Cool water Cold water Miscellaneous cc – channel catfish np – northern pike ats – atlantic salmon crus - crustaceans bb – brown bullhead we – walleye rbt – rainbow trout moll - molluscs bkb – black bullhead sb - striped bass bkt – brook trout yb – yellow bullhead f – flounder bnt – brown trout wc – white catfish kok – kokanee salmon lmb – largemouth bass It must be mentioned that the major route of dissemination of these pathogens is through the movement of fish and/or fish gametes i.e. importation/liberation of fish and/or fish gametes from infected areas/facilities into non-infected areas/facilities. This is accomplished by allowing movement of fish and/or fish gametes into and within the state. Some of the more targeted game species pathogens such as largemouth bass virus could be moved inter-state through contaminated boats i.e. livewells, bilge water etc. Movement of pathogens associated with aquarium species (Hexamitosis) could be accomplished by inadvertent or intentional release of aquarium fish species.