Dr. David Paez observes as Chinook salmon undergo a swim performance trial. Water velocity in the swim chamber is increased over a prescribed period to determine time of exhaustion for each individual fish. Virus-exposed and healthy control fish are swum together in a small group and must be watched carefully.
Chinook Salmon swimming in swim flume
Detailed Description
Chinook salmon orient into the water current of the swim flume during a performance trial. The flume provides control over current speed, which is increased at specific time intervals while fish are monitored over a period of 1-2 hours. Swim performance is determined by speed of current and total duration that each fish swims prior to exhaustion (when fish ceases swimming). Appropriate current speeds are calculated using the average body length of fish.
Sources/Usage
Public Domain.
Related
Swim performance trial images
Researcher preparing to sample fish from swim flume
Dr. David Paez observes as Chinook salmon undergo a swim performance trial. Water velocity in the swim chamber is increased over a prescribed period to determine time of exhaustion for each individual fish. Virus-exposed and healthy control fish are swum together in a small group and must be watched carefully.
Conditioning of fish in swim flume
(Left to Right) Dr. David Paez, Joanna Salzer, Dr. Jee Youn Hwang and Bill Batts observe as Chinook salmon are conditioned in the swim flume prior to swim performance trials.
(Left to Right) Dr. David Paez, Joanna Salzer, Dr. Jee Youn Hwang and Bill Batts observe as Chinook salmon are conditioned in the swim flume prior to swim performance trials.
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.
(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.
Related
Swim performance trial images
Researcher preparing to sample fish from swim flume
Dr. David Paez observes as Chinook salmon undergo a swim performance trial. Water velocity in the swim chamber is increased over a prescribed period to determine time of exhaustion for each individual fish. Virus-exposed and healthy control fish are swum together in a small group and must be watched carefully.
Dr. David Paez observes as Chinook salmon undergo a swim performance trial. Water velocity in the swim chamber is increased over a prescribed period to determine time of exhaustion for each individual fish. Virus-exposed and healthy control fish are swum together in a small group and must be watched carefully.
Conditioning of fish in swim flume
(Left to Right) Dr. David Paez, Joanna Salzer, Dr. Jee Youn Hwang and Bill Batts observe as Chinook salmon are conditioned in the swim flume prior to swim performance trials.
(Left to Right) Dr. David Paez, Joanna Salzer, Dr. Jee Youn Hwang and Bill Batts observe as Chinook salmon are conditioned in the swim flume prior to swim performance trials.
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.
(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.