and EN, respectively (Table 1). It ranked seventh in abundance among 

 the trawl catches and eighth among the impinged finfish. Over 80% of 

 trawled cunner were caught at IN and JC (Table 3). The cunner was most 

 abundant in the catches from various programs from May through September 

 (Table 4) . Length frequency histograms of cunner from the trawl and 

 impingement programs differed. The length distribution of trawled 

 cunner was bimodal with a small peak at 30 and a larger one at 110 mm; 

 the impingement distribution had a single mode at 90 mm (Fig. 25). 



20 

 30 



40 



50 



60 



70 



80 



90 



100 



I 10 



120 



1 30 



I 40 



150 



160 



170 



180 



190 



200 



2ie 



220 



230 

 240 

 250 

 260 

 270 

 280 

 290 

 300 



tV?W??i 





200 300 

 FREQUENCY 



400 



500 



100 200 300 400 500 60C 



FREQUENCY 



Figure 25. Length frequency of T^. adspcrsus in trawl (left) and impingement 

 (right) collections from October 1976 through September 1983. 



The fluctuations in the catch of cunner were modeled using harmonic 

 regression techniques (Table 13). Flow (for impingement) and season 

 (for plankton and trawls) were significant multiplicative regressors 

 (see Table 4 for the months when season was or 1). Terms describing 

 12-mo cycles were present in all models, and were the only harmonic 

 components present in impingement models. Components for both longer 

 and shorter cycles were found useful in modeling the catches of cunner 

 in other programs. The trawl models included 6-yr cycles. Since only 6 

 years of data were modeled it was difficult to determine if these cycles 



42 



