FISHERY BULLETIN: VOL. 82, NO. 1 



BO 



DR 

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KN 



B3 

 OB 



h- 



u 



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z 

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MU 

 87 

 RB 

 PV 



88 

 BA 



90 



SO 

 91 



93 

 MB 

 95 



10 



— I - 



20 



— 1 1 — 



30 40 



PERCENT 



SAM 

 DtEGO 



< 



> 



< 



3 



3300 - 



3000 



2700 



2400 



2100 



1800 



1500 



1200 



900 



600 



300 - 



• = MANTA 



□ = MID-DEPTH 



 = BENTHIC 

 A= OBLIQUE 



"I 1 I - 



08 15 22 



BOTTOM DEPTH (m) 



36 



60 



FIGURE 15.— Mean density of white croaker larvae collected with 

 each of four different tow types along four isobaths — 8, 15, 22, and 

 36 m— in the Southern California Bight between August 1979 and 

 July 1980. 



FIGURE 14. — The percentage contributed by white croaker to the 

 total number of larvae collected along each of 20 transects in the 

 Southern California Bight between August 1979 and July 1980. 

 See Table 2 for station abbreviation definitions. 



(23.57c) between San Onofre and the international 

 border. Based on these values plus the density 

 estimates, we project the average number of white 

 croaker larvae in each of the three areas during this 

 period to have been 1.15 X 10 10 , 1.75 X 10 10 , and 2.97 

 X 10 9 , respectively. Thus, about 55% of the white 

 croaker spawned in the area between Redondo 

 Beach and Laguna Beach, 36% between Playa del 

 Rey and Point Conception, and about 9% between 

 San Onofre and the border. 



Fishery 



Most of the white croaker retained by sportfisher- 

 men were adults (Fig. 17), being 21-25 cm and 5-7 yr 



Figure 16. — Mean percentage of white croaker larvae collected 

 near the surface, near the bottom and in between along each of four 

 isobaths — 8, 15, 22, and 36 m — in the Southern California Bight be- 

 tween August 1979 and July 1980. 



6IJ 



50 - 



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30 



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| NEUSTON 



| | MID-DEPTH 



I BENTHIC 



4 



08 15 22 



BOTTOM DEPTH (m) 



q 



36 



192 



