52 



Fishery Bulletin 104(1) 



Table 2 



Periods of greatest spectral variance in the daily CPUE 

 data of the market squid tLoligo opnlescens) fishery for 

 1981-2003. Significance: P<0.01. Numbers in bold are 

 repeated in more than one area. Harmonics of factors of 2: 

 2, 4, ... 4096 (blank spaces I are omitted because they are 

 inherent in spectral analysis and not relevant to this spe- 

 cies. MB=northern coastal area, predominantly southern 

 Monterey Bay; CC = central coast; SB = Santa Barbara; 

 SCB = Southern California Bight; SM = Santa Monica; and 

 SD = San Diego. 



Assuming a 6-9 month lifespan for L. opalescens, 

 we used linear regression to compare SST from buoy 

 data for the previous 6-10 months. We performed com- 

 parisons up to 10 months because squid eggs take 30 

 days to hatch at 12°C, which is a typical time period 

 for eggs to hatch in winter in Southern California and 

 spring-summer in Monterey Bay. The only significant re- 

 gression occurred in the SM region with SSTs 10-months 

 earlier (r- = 0.46, P=0. 00.33, Fig. 5). We compared satel- 

 lite-derived (AVHRR) estimates of SST for 1985-2002 

 from areas with high densities of paralarvae and juve- 

 niles (within 8 km of shore) with CPUE by using cross 

 correlation time series analysis. Although there were 

 significant correlations, linear regression yielded no sig- 

 nificant predictions for landings or CPUE from SST. 



Stock recruitment analysis 



We compared a paralarvae density index (PDI) with 

 CPUE for the SCB and SM regions (Fig. 6, shaded area 

 of Fig. 1). Collections of paralarvae were made in Febru- 

 ary (Fig. 6). After the initial surveys of 1999, methods 

 developed in Zeidberg and Hamner (2002) resulted in 

 34-50 stations for oblique bongo tows to collect paralar- 

 vae in SCB and SM regions. Paralarvae/1000 m-' from 



