Distribution of Pink Shrimp Larvae and Postlarvae 



C. P. Idyll, Albert C. Jones, and D. Dimitriou 



University of Miami, Institute of Marine Science 



(Contract No. 14-17-0002-4) 



Research on the production and distribution of planktonic larvae 

 and postlarvae of pink shrimp, Penaeus duorarum , was performed by the 

 Institute of Marine Science of the University of Miami. Over a thousand 

 plankton hauls were made and hydrographic data collected on 20 cruises 

 from July 1961 through May 1962 to the Tortugas Shelf. In addition, infor- 

 mation on water currents was obtained on two cruises in August and Sep- 

 temper 1961, and previously collected current data were sumnnarized. 



The currents in shallow water less than 15 meters in depth are 

 primarily tidal. At depths from 15 to 33 meters, resultant currents show 

 both tidal and wind-driven components. Beyond depths of 33 meters to the 

 western side of a salinity ridge, whose position varies seasonally, the cur- 

 rents are wind driven with no visible effects from the tide. To the west of 

 the salinity ridge and to the limits of the area sampled, the currents are 

 density currents. 



JFMAMJJASONO|JFMAMJJASONO|JFMAMJJASONOJJFMAMJ 



1959 I960 1961 1962 



Relative abundance of pink shrimp larvae and postlarvae and 



average bottom water temperatures on the Tortugas 



Shelf from January 1959 to April 1962. 



93 



