POLACHECK: YELLOWFIN TUNA CATCH RATES 



10000^ 



8000- 



6000 



EFFORT BY JAPANESE LONGLINERS A 



'l"""""'l"""""'l"' 'I' "" I' n i n | n iiiiiiiii| nnn |i 



1979 1980 1981 1982 1983 1984 1985 1986 



150000 



100000 



X 



'1 



o 

 m 



O 



o 

 o 



50000 



CATCH BY JAPANESE LONGLINERS B 



^^^ 



[ n I I I 1 1 1 i r I I 1 1 I I n 1 1 I I I [ 1 1 I I I I I I I I I I 1 1 I I I | i i i i i | i M I r i i 1 1 i 



1979 1980 1981 1982 1983 1984 1985 1986 



Figure 7.— Monthly catch of yellowfin tuna and effort statistics for Japanese longliners in the western 

 Pacific based on data currently reported to the South Pacific Commission. 



131 



