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Welcome to the technical sessions schedule for the 2015 SEAFWA Annual Meeting.

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Wednesday, November 4 • 9:20am - 9:40am
First case of a Myxobolus cerebral (Whirling disease) in trout in North Carolina

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Raphael Orelis-Ribeiro, Matthew R. Womble, Jackson R. Roberts, Candis Ray – Southeastern Cooperative Fish Parasite & Disease Project, School of Fisheries, Auburn University; Jacob M. Rash, Doug A. Besler – North Carolina Wildlife Resources Commission; Stacey Lafrentz, Cova R. Arias, Stephen A. Bullard* – Southeastern Cooperative Fish Parasite & Disease Project, School of Fisheries, Auburn University

The myxozoan parasite Myxobolus cerebralis was introduced into North America in the mid-twentieth century with infected brown trout (Salmo trutta) imported from Europe and is now recorded in 24 states and 26 countries. This parasite is the causative agent of whirling disease; an economically and ecologically devastating disease of salmonids, especially rainbow trout (Oncorhynchus mykiss). Heavily-infected (diseased) fishes exhibit “whirling” behavior (tail chasing, disequilibrium, erratic swimming) plus skeletal and pigment abnormalities that are obvious to and can alarm anglers. The first occurrence of infection by M. cerebralis in rainbow trout, brown trout, and oligochaetes from North Carolina was confirmed in July 2015. Herein, we report on the prevalence of infections among rainbow trout, brown trout, and oligochaetes from streams and culture settings, discuss the geographic distribution of M. cerebralis in North America more broadly, and detail the clinical signs of whirling disease that indicated the presence of the disease in North Carolina. This comprises the first documented occurrence of the pathogen and corresponding disease in the southeastern United States south of Virginia.

Wednesday November 4, 2015 9:20am - 9:40am EST
Windsor B

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