(full paper is archived in the Miller Library)
Title: Activity level of captive yellowfin tuna
Student Author(s): Freeman, Kimberly D.
Faculty Advisor(s): Block, Barbara A.
Location: Final Papers Biology 175H
Date: June 1995
Abstract: The activity of yellowfin tuna Tunnus albacares in captivity was assayed through observations of speed, distance travelled in a day, and tailbeat. Cytochrome oxidase and myosin ATPase assays were conducted on red and white muscle tissues from wild and captive yellowfin tuna to determine a relative level of these enzyme activites. The speeds calculated for the captive tuna were found to be significantly less than speeds found by tracking wild tuna, indicating that captivity may be reducing tuna activity. In addition, the enzyme assays revealed that cytochrome oxidase activity in captive white muscle tissue appears to be distinctly different than that in wild white muscle tissue, and different isoforms of myosin ATPase may be expressed in captive red and white muscle tissues than those in wild red and white muscle tissues.
Notes: Published in The Stanford Biologist, 1996 1:33-40