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Biol Bull 141: 337-349. (October 1971)
© 1971 Marine Biological Laboratory
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THE EFFECT OF TEMPERATURE ON THE ACTIVITY OF BLUEFISH, POMATOMUS SALTATRIX L

BORI L. OLLA 1 and ANNE L. STUDHOLME 1

1 National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Sandy Hook Sport Fisheries Marine Laboratory, Highlands, New Jersey 07732

1. The swimming speed of the bluefish increased as temperature increased or decreased from acclimation levels of 19-20° C.

2. As the temperature approached 11.9° C and 29.8° C, there were significant changes in average swimming speed and schooling which were considered to be indicative of stress.

3. The daily rhythmic activity was not well-defined at stress temperatures.

4. As the temperature departed from stress levels toward acclimation, swimming speed dropped significantly and the daily rhythm of activity returned.






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Copyright © 1971 by the Marine Biological Laboratory.