Schaeffer and Oliver Shape, volume, and resonance frequency of the swimbladder of Thunnus albacares 



367 



struction and fish-length data truncated to a length 

 range of 60 to 119 cm from the present study 

 (n=36) and from Schaefer (1999) (n=2A) indicated 



no significant difference in the test for equality 

 of slopes (F-2.50, P=0.12) or equality of adjusted 

 means (F-2.Z8, P=0.13). In addition, an approxi- 



