Larval studies 



Several special studies and analyses have been conducted to identify possible sampling biases in the 

 larval winter flounder data base. Because of the biases there are limitations in the usefulness of some of 

 the data. Therefore, the results of these special studies are presented fu-st to identify these limitations. 



Net extrusion studies 



The effects of mesh size and tow duration on the sample density of larval winter flounder were 

 examined in the field and laboratory. Field comparisons of the collection of 1-mm size-classes were made 

 for 333 and 505-^m mesh nets from the 1974 and 1975 data (Fig. 8). Based on paired comparisons, the 



9001 

 800 

 7001 

 600 

 500 

 400 

 300 

 200 

 100 

 



333 505 333 505 333 505 333 505 333 505 333 505 



3 4 5 6 7 8 



LENGTH (MM) 



Figure 8. Compari.son of larval winter flounder length frequencies by 1-mm size-class collected in paired 333- and 

 505-tim mesh nets during 1974 and 1975. 



60 



