Researchers processing fish samples in Marrowstone Marine Field Station (MMFS) wet laboratory
(Left to Right) Bill Batts, Joanna Salzer, and Dr. Jee Youn Hwang sample fish during a swim performance trial. Once fish have completed swim trials they are euthanized and kept fresh on ice. Sampling includes length and weight measurements, and collection of a small portion of tissues to confirm the presence of virus. Quantity of viral RNA within the tissue is compared to duration of swim performance to evaluate whether fish that have more virus also fatigue more quickly when swimming. If so, this would indicate a sublethal fitness loss for the fish due to viral infection.