100.00 180.00 280.00 3U0.00 



EFFORT: FOE (no^) 



li20.00 



500.00 



180.00 



200.00 



300.00 

 EFFORT :POTS (XIO 



U20.00 



500.00 



Fi^re 6. — Atlantic and Gulf blue crab pot fishery, 1950-67 

 and catch per unit of effort. 



Catch, effort 



81 



