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76 77 78 79 80 81 82 83 84 85 



YEAR 



Figure 21. Annual mean trawl -catches of grubby; the vertical bars are the approximated 95% confidence intervals for 

 each year. 



Chenoweth 1963). The eggs are pelagic and are concentrated in the upper 5 m of the water column 

 (Williams 1967). Young become benthic and move inshore after metamorphosis, which is completed by 

 10 mm (Fritzsche 1978). 



Tautog was found in all sampling programs, but was most abundant in the June through August 

 plankton collections (Tables 10, 12, and 14). Catches were low in impingement, trawl and seine samples. 



Tautog eggs were the second most abundant egg taxon entrained (Appendix V) during the two-unit 

 operational period. Annual egg entrainment estimates did not vary widely and ranged from 646x10 (1979) 

 to about 1,400x10 (1981 and 1982). Both median and mean egg densities (Tables 9 and 11) varied over 

 a relatively small range; medians from 920 (1979) to 1,619/500 m^ (1981) and means from 715 (1979) to 

 1,506 /'500 m (1985). The lowest egg density as indicated by both measures occurred in 1979, but the 

 highest egg density occurred in either 1981 or 1985, depending on the index of abundance used. Clearly, 

 no trend can be discerned from these data. 



4S 



