10 



Fishery Bulletin 89(1), 1991 



10-19 APRIL. 1980 

 N=574 



CD 

 < 



O 



cr 



3 

 o 



20 40 60 80 100 120 140 160 180 200 

 FORK LENGTH (mm) 



Figure 7 



Length-frequency and cumulative percentages of Peprilus 

 burti from the northcentral Gulf, (top) east and (bottom) west 

 of the Mississippi River, April-May 1980. Cohort identities 

 are indicated. 



13 months and 171mm at 27 months (Table 3). Fall- 

 spawned fish averaged 66-73 mm at 7 months and 

 142-149mm at 20 months. 



Male and female P. burti reach a similar size off 

 Texas. The largest male sexed was 173 mm and the 

 largest female was 163 mm. Both sexes were equally 

 abundant among fish greater than 150 mm. 



Peprilus burti showed little apparent somatic growth 

 off Texas as spawning approached, but fish from the 



northcentral Gulf had large annual growth increments. 

 Off Texas, fish grew little after reaching modal sizes 

 of 110-160mm at 7-15 months in Winter groups and 

 120-150mm at 9-16 months of age in Fall groups 

 (Figs. 4, 8). Growth ceased or greatly slowed between 



