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Fishery Bulletin 92(2). 1994 



mortality was restricted to size class 7 and larger 

 (>3.5 in), would eventually negate both effects as 

 population density increased. 



Effect of latitude on population stability 



In Figure 19 and Table 7, we compare the time-de- 

 velopment of oyster populations under the tempera- 



ture conditions of Chesapeake Bay with those un- 

 der the temperature conditions of Galveston Bay 

 (Fig. 15). In comparison with the Galveston Bay 

 populations, those in Chesapeake Bay are charac- 

 terized by densities 2 to 5 times lower, reproductive 

 efforts as much as a factor of 10 lower, size-fre- 

 quency distributions considerably shifted toward the 

 large size classes (Figs. 20 and 21), and discrete spo- 



