Figure 7. — Relative abundance and distribution of planktonic-stage Pcnacits spp., September to 

 December 1961. 



-"TAKEN FROM LINDNER AND ANDERSON, 1956 

 ^TAKEN FROM BAXTER AND RENFRO, 1966 



Figure 8. — Months of spawning, larval occurrence, and postlarval 

 movement into Galveston Bay by the white shrimp, P. setiferus. 



est number of larvae were caught, they were 

 restricted generally to waters deeper than 14 m. 

 The occurrence of larvae at 14-m. stations in 

 April to August reflects, we believe, the spawn- 

 ing of white shrimp in shallow waters. Similar- 



ly, increased concentrations of larvae from Sep- 

 tember to December in deeper waters indicate 

 the spawning of brown shrimp. 



The areal distribution of postlarvae during 

 the three periods differed from that of larvae. 



U.S. FISH AND WILDLIFE SERVICE 



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