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Biol Bull 138: 389-396. (June 1970)
© 1970 Marine Biological Laboratory
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SURVIVAL OF UNFED SQUID, LOLIGO PEALEI, IN AN AQUARIUM

WILLIAM C. SUMMERS 1 and JOHN J. McMAHON 1

1 Marine Biological Laboratory, Woods Hole, Massachusetts 02543

1. This paper reports the survival rate of unfed squid,Loligo pealei, in a 600 liter aquarium with running sea water and constant illumination.

2. Squid captured by a floating fishtrap and by otter trawl nets survived at the average rate of approximately 71% per day over a period of one week apparently independent of time in the tank, method of capture, water temperature, size or sex.

3. Initial numbers of squid between four and forty did not greatly alter the relative results. The early results, in conjunction with the survival rate given above and the initial number of squid, were useful in empirically evaluating the probable course of an experimental run.

4. It is possible that observed mortalities resulted from crowding and mechanical confinement. Other anticipated causes of mortality ( i.e., capture trauma and starvation) were not obvious in our results.






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Copyright © 1970 by the Marine Biological Laboratory.