320 



Fishery Bulletin 89(2), 1991 



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FEB JUN OCT FEB JUN OCT FEB JUN OCT FEB JUN OCT 

 YEAR 1 YEAR 2 YEAR 3 YEAR 4 



Figure 6 



Monthly return percentage of king mackerel released from 

 Florida Keys region and recaptured in the (a) southeastern 

 Florida (SEFL), (b) Florida Keys (FK), (c) northeastern Gulf 

 (NEG), and (d) northwestern Gulf (NWG) subareas, using a 

 continuous time-scale representative of relative time of 

 freedom. Returns begin with February of year 1. 



A total of 37.0% (N 201) of the king mackerel recap- 

 tured from fish released from the Ft. Pierce region 

 moved more than 100km, with fish recaptured as far 

 as 1000 km Atlantic-ward off North Carolina (Fig. 7b); 

 fish moving Gulf-ward were recaptured as far away as 

 Texas and Mexico (up to 2400 km). Within 800 km of 

 the release site, the relative magnitude of movement 

 away from the Ft. Pierce release region was similar 

 for king mackerel with Gulf-ward affinity and those 

 with Atlantic-ward affinity; however, a significantly 

 greater number of fish (x 2 119.53, P< 0.005) moved 

 Gulf-ward (88.6%; N 178). A similar trend in the rela- 

 tive magnitude of movement was noted for fish re- 

 leased from the Jupiter region; 48.3% (N 100) moved 



more than 100 km. A significantly higher percentage 

 of these fish (x 2 7.84, P<0.01) moved Atlantic-ward 

 (64.0%; N 64; Fig. 7c). For fish moving more than 

 100 km (N 91), those tagged in the Florida Keys region 

 moved farther from their release site into Gulf waters 

 than did those fish moving Atlantic-ward (Fig. 7d). 

 However, king mackerel released in the Florida Keys 

 region did not show a significant difference in their 

 relative direction of movement (x 2 0.27, 0.50<F< 

 0.75): 47.3% (N 43) moved Atlantic-ward, 52.7% (N 48) 

 moved Gulf- ward. 



The number of days-at-large was significantly related 

 to the distance that a fish traveled after release (Y- 

 intercept 130.609, slope 0.072, r 0.122, df 1, 1148, 



