during this season there was no longer a greater proportion of older haddock 

 (5-+years) in deeper water. The catch per tow in depth zone III, which during the 

 summer months was negligible, was now considerably greater than that in depth zone 

 IV. In general, there appeared to be less segregation of age groups, although the 

 majority of younger fish (1-3 years) were found in depths less than 60 fathoms. The 

 age composition by depths is more clearly shown in the percentage age composition 

 of the total catch. The greatest percentage of older fish (5t-years) occurred in tows 

 made in depth zone III. 



To convert numbers of haddock to pounds of haddock during this season the 

 factors in table 11 were used. From these factors-the weight per tow was deter- 

 mined for the four age groups as was done with the summer data. The weight and 

 catch per tow for these four age groups are shown in table 12. 



Table 11.- - Age - weight relationship of haddock in spring 



Table 12.. - -Age group distribution in the four depth zones 



(spring 1950) 



31 



