Table 12. --^unmary of chl-square analyses of bait return and catch by 

 kind of bait (sardine vs. herring), John R. Manning cruise 

 14 (based on data given in table 32) 



1/ stations 

 than 5. 



have been combined to given expected values greater 



where there is only one bait in the stomach, the possibility still exists that it 

 might have been "stolen" from another hook prior to capture, but where there are 

 two or more baits In the stomach they constitute firm evidence of bait stealing 

 by tuna. An extreme case of bait stealing by tuna was observed on station 9 on 

 cruise 16 of the Manning (July-August 1953) , when 9 baits were recovered from a 

 single yellowfin stomacn. 



Bait stealing by smaller fish and Invertebrates has not yet been proven; 

 however, these organisms presumably are able to feed on the longline baits without 

 getting caught, as is indicated by partially eaten or shredded baits (fig. 4). In 

 addition, stomach examinations of miscellaneous species of fish caught on the 

 longline such as the barracuda, Sphyraena barracuda (Walbaum) , and wahoo. 



14 



