FISHERY BULLETIN: VOL. 76, NO. 1 



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p 



J4' W 



TRANSECT A 



N = 293 ( 339 ), JUNE 17 



TRANSECT B 



N = 2239 { 686 ), JUNE 18 



TRANSECT C 



N = 368 (359 ), JUNE 19 



TRANSECT D 

 N = 128 ( 136 ) 



JUNE 20 



TRANSECT E 



N = 25 ( 25 ), JUNE 28 and 29 



TRANSECTS G, H, and K 



N=34(34), JUNE 25, 27, ond 28 

 , , W , W- 



200 300 



STANDARD LENGTH ( mm ) 



1^ 



Figure 9. — Length-frequency distributions of Scomber scom- 

 brus larvae taken during June 1966. N indicates the adjusted 

 total catch and, in parentheses, the number measured; a star 

 indicates less than 1%. 



Because larvae were inhabiting waters under- 

 going warming they were associated with slightly 

 higher temperatures than were eggs. Surface 

 temperatures associated with larvae caught dur- 

 ing May, June, and August ranged from 12.3° to 

 20.7°C, with 96% occurring at 13.7° to 16.8°C. 



Scomber japonicus. Egg Distributions 



Eggs of S . japonicus were taken on two survey 

 cruises conducted south of Cape Lookout. During 

 the January-February 1968 cruise eggs occurred 

 on seven transects, between Charleston, S.C. and 

 St. Lucie Inlet, Fla. (Figure 10). During the May 

 1967 cruise they occurred more northerly, from 

 New River, N.C., to Cape Canaveral, Fla. (Figure 

 11). 



Most S. japonicus eggs were found over the 

 outer half of the continental shelf All were taken 

 where the water was at least 32 m deep; the six 

 largest catches (more than 10 eggs/station) were 

 at locations where the water was at least 60 m 

 deep. The fact that these eggs occurred at the 

 offshore extremes of two-thirds of the transects 



Figure 8. — Distribution of Scomber scombrus larvae during 



June 1966. 



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