and offshore movements. In LIS, spawning takes place in depths of less than 20 m during June through 

 September (Richards 1959). Eggs are pelagic and hatch in 24 h at approximately 27°C (Kuntz 1914). 

 Development is rapid and individuals may mature within 2.5 mo of hatching, at a size of 34 to 40 mm; 

 its life span is probably not more than 2 or 3 yr (Stevenson 1958). 



Anchovies were among the four most abundant taxa collected in all programs except seines. Larval 

 abundance ranked first at both EN and NB and egg abundance ranked third at EN (eggs from NB were 

 not identified) (Appendices VI, VII and VIII). During the two-unit operational period, annual larval 

 entrainmcnt estimates, based on median densities ranged from 1.5x10 in 1984 to 1,284.1x10 in 1981. 

 Although median larval densities at EN were generally low (1976-1978), high (1979-1981), and low again 

 (1982-1985), the actual number of anchovies entrained during the same periods did not follow that pattern 

 because entrainment is a function of plant operating conditions. However, the highest and the lowest 

 estimates at EN also occurred in 1981 and 1984, respectively. In addition, both the entrainment estimate 

 and median density of larval anchovies at EN in 1981 were significantly higher (p < 0.05) than in any 

 other year (Table 9). Also the number of larval anchovies entrained in 1984 was significantly lower than 

 in any other year. Annual egg estimates ranged from 16.0x10 in 1985 to 807.7x10 in 1984 (Table 9). 

 Although annual impingement estimates varied more than two orders of magnitude (342 to 52,280), it was 

 the third most abundant taxon impinged (Appendix IX). Among the species taken in trawls, anchovies 

 ranked fourth (Appendices X and XI). 



Near MNPS, anchovies migrated inshore in May and June and were available to the various NUEL 

 sampling gear through October (Fig. 9). Adults (median length of 77 mm) were impinged primarily from 

 May through June, which corresponded to the time of their spawning. Eggs were abundant from June 

 through July and larvae .July through August at EN and NB. Juvenile anchovies (median length of 27 

 mm) were caught in trawls during August through October, primarily at NB and IN. 



Because anchovies mature in one year, changes in larval density in any given year should result in 

 corresponding changes in adult and egg abundances the next year. However, this pattern was clearly not 

 observed in the annual catches of anchovies during the last three years (1983-1985) of the two-unit 

 operational period. In 1983 and 1984, the densities of eggs at EN and the number of adults impinged 

 were equal to or higher than in previous years, but the 1984 larval densities at both EN and NB were 

 lower than in any previous year (Tables 10, 1 1, and 13; Fig. 10). This minimum was probably related to 



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