DEC JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV 



Figure 5. --Bigeye tuna catches per 100 hooks by months, 1 - 

 5°N. latitude, 135°-170°E. longitude. Points 

 obtained from table 4 by averaging the unweighted 

 mean catch rates, excluding those based on less than 

 3 days. 



Black marlin catches in the mothership area fail to show a recognizable pattern of 

 variation in abundance with respect to longitude (table 4). With respect to time there do not 

 appear to be the well marked peaks and valleys of abundance (fig. 6) evidenced by the two species 

 of tuna. However, the catch rate in 1951 fell to about one-half that of 1950 (fig. 6). 



Figure 6. --Black marlin catches per 100 hooks by months, 



1°-5°N. latitude, 135 -170°E. longitude. Points 

 obtained from table 4 by averaging the unweighted 

 nnean catch rates, excluding those based on less 

 than 3 days. 



