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Unclassified 



SECURITY CLASSIFICATION OF THIS PAGE (When Data Enlarad) 



REPORT DOCUMENTATION PAGE 



READ INSTRUCTIONS 

 BEFORE COMF>t,ETING FORM 



1. REPORT NUMBER 



Contract Report H-77-1 



2. GOVT ACCESSION NO 



3. RECIPIENT'S (fATALOG NUMBER 



4. TITLE Cand Subl/tle; 



STUDIES ON THE TIME COURSE OF SALINITY AND 

 TEMPERATURE ADAPTATION IN THE COMMERCIAL BROWN 

 SHRIMP PENAEUS AZTECUS IVES 



5. TYPE OF REPORT & PERIOD COVERED 



Final report 



6. PERFORMING ORG. REPORT NUMBER 



7. AUTHORr*; 



A. Venkataramiah 

 G. J. Lakshmi 

 Patricia Biesiot 



John D. Valleau 

 Gordon Gunter 



8. CONTRACT OR GRANT NUMBERfsJ 



DACW 39-73-C-0115 



9. PERFORMING ORGANIZATION NAME AND ADDRESS 



Gulf Coast Research Laboratory 

 Ocean Springs, Mississippi 39564 



10. PROGRAM ELEMENT. PROJECT. TASK 

 AREA a WORK UNIT NUMBERS 



11. CONTROLLING OFFICE NAME AND ADDRESS 



Office, Chief of Engineers, U. S. Army 

 Washington, D. C. 20314 



12. REPORT DATE 



September 1977 



13. NUMBER OF PAGES 



370 



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U. MONITORING AGENCY NAME a ADORESSCf/ dl/Zerent from Controlling Olllce) 



U. S. Army Engineer Waterways Experiment Station 



Hydraulics Laboratory 



P. 0. Box 631, Vicksburg, Mississippi 39180 



tS. SECURITY CLASS, (ol thia report) 



Unclassified 



15«. DECLASSIFI CATION/ DOWN GRADING 

 SCHEDULE 



16. DISTRIBUTION STATEMENT (ol thie Report) 



.Approved for public release; distribution unlimited. 



'7. DISTRIBUTION STATEMENT (ol the abstract entered In Block 20, II dlllereni from Report) , 



18. SUPPLEMENTARY NOTES 



19. KEY WORDS (Contln\ie on reverse aide it neceaaary and Identity by block number) 



Aquatic ecosystem 

 Crustacea 



Environmental effects 

 Salinity effects 



Shrimps 

 Temperature effects 



20. ABSTRACT (Caatiaue aix reverma alda It na c eaaary mtd Identity by block number) 



The time course of salinity and temperature adaptation in brown shrimp 

 Penaeus aztecus was determined by analyses of certain behavioral and physiolog- 

 ical responses, the respiratory rates and osmotic and ionic regulation. The 

 animals were transferred separately from a background salinity (S) lS°/c,o 

 (control) and temperatures of 18°, 25° and 32°C to different test conditions 

 for salinity adaptation. The test salinities were 2, 5, 10, 15, 25 and 36°/oo 



(Continuedl 



DD , 



JAN 73 '*'•> 



EDITION OF t HOV 65 IS OBSOLETE 



Unclassified 



SECURITY CLASSIFICATION OF THIS PAGE (When Date Entered) 



