940 



Fishery Bulletin 97(4), 1999 



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Figure 20 



Merluccius productus larvae (no./lOOO m') in MESSHAI tows. Average from (A) deep and (B) 

 shallow tows at inshore (solid) and offshore (shaded) stations; (C) densities in 0-200 m stratum 

 (average of pooled 40-m strata) from sequential deep tows at inshore station; (D) densities in 0- 

 40 m stratum (average of pooled 10-m strata) from sequential shallow tows at inshore station; 

 average from (E) deep and (F) shallow tows at inshore station before storm (cross-hatching) and 

 after storm (hatching). 



tows results from relatively large numbers of 6.0- 

 10.0 mm larvae caught at the surface during the day 

 (Fig. IOC). This was a consistent feature of Manta 

 catches throughout the cruise, suggesting that an- 

 chovy larvae may have been migrating to the sur- 

 face layer to feed during the day. 



The storm that interrupted sampling for two days 

 at the inshore station significantly affected the rela- 

 tive abundance and distribution of fish larvae and 

 their physical and biotic environment. Average den- 



sities of anchovy larvae declined markedly in most 

 strata following the storm, possibly as a result of 

 mortality associated with starvation. This argument 

 is contradicted by the results of Mullin et al. (1985) 

 who showed that important larval fish prey, such as 

 copepod nauplii increased in concentration after the 

 storm, were no less stratified than before the storm, 

 and had a 15-m upward shift in peak abundance that 

 mirrored the shoaling of anchovy larval distribution 

 in our study. Moreover, the chlorophyll maximum was 



