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PART IV 

 RECOMMENDATIONS FOR THE FUTURE 



I. NEED 



Ideally, assessment scientists desire the following information: 



1. Understanding of species-stock biology; 



2. Quantification of the commercial indices which allow trends 

 in abundance to be followed. Estimation of such indices 

 requires knowledge of the effects of changes in harvest 

 technologies; 



3. Survey information that demonstrates changes in total 

 stock abundance and age composition; 



4. Survey information giving prerecruit indices; 



5. Accurate knowledge of species/stock abundance and area 

 location. Such issues require knowledge concerning discards 

 as well as unrecorded mixed fisheries (which often produce 

 fishmeal ) ; 



6. Accurate age and size composition; 



7. Historical catch-effort data; 



8. Understanding of movements and migrations; 



9. Knowledge of the sum of such factors as temperature; 



10. Knowledge concerning the interrelatedness among species. 

 At the present time, no stock has adequate quantitative data on all 

 these items. ^°^' Such information is necessary to develop estimates of 

 maximum potential yields without reducing the parent stock. Such 

 information requires the awareness of not only first-order effects but 

 second-order effects as well. The time and budget needs to provide this 

 data are enormous. 



