Wood and Cadrin: Mortality and movement of Limanda ferruginea tagged off New England 
285 
England that have indicated short, seasonal movement 
patterns (Royce et ah, 1959; Lux, 1963). 
Conclusions 
Current stock assessments of Yellowtail Flounder pro- 
vide valuable information for fishery management, al- 
though several major sources of uncertainty are pres- 
ent (NEFSC 1 )- The results of this study address 2 im- 
portant sources of uncertainty in the Yellowtail Floun- 
der assessments: estimates of mortality and large-scale 
movement patterns among stock areas. 
The results from the tag-recovery modeling in this 
study confirm that the Yellowtail Flounder population 
is experiencing a high level of mortality. These results 
were derived from data independent of the stock as- 
sessment data, and although we were able to confirm 
high levels of mortality, the direct cause remains un- 
known. In addition to modeling mortality, the pattern 
of tag-recovery locations from this study provides an 
updated look at stock mixing. Movement from the 
southern New England-Mid-Atlantic stock area to the 
Georges Bank stock area was greater than previously 
observed. However, some of this perceived movement 
was attributed to the study design and the locations 
