Butler et aL: Biology and population dynamics of Sebastes levis in the southern California Bight 



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1977, with the exception of the period 1989-91. The propor- 

 tion of LAOCSD survey bottom trawls with juvenile cowcod 

 declined from about 2Xi% in 1974 to near zero levels in the 

 late 1990s (Table 4 and Fig. 8). 



The "best" Poisson model for CPFV logbook data included 

 pseudo-block, year, and months as main effects and interac- 



tions between pseudo-blocks and years. CPFV results sug- 

 gest declining trends in catch rates in most pseudo-blocks 

 (Fig. 9) and for the SCB as a whole (Table 4 and Fig. 10). 

 Love et al. ( 1998) found similar trends in CPUE for cowcod 

 and five other species of rockfish during 1980-96 based on 

 MRFSS data. 



