CONTENTS 



Page 



Report of the Director 1 



General 1 



Laboratory facilities Z 



Public relations Z 



Foreign visitors Z 



Foreign trainees Z 



Laboratory activities Z 



Library 3 



Publications 3 



Manuscripts in press ...... 4 



Manuscripts submitted 4 



Shrimp biology program 5 



Distribution and abundance of larvae 5 



Seasonal trends in abundance 6 



Overwintering of postlarval brown shrimp 6 



Taxonomy and culture of shrimp larvae 7 



Larval food studies 7 



Responses of larvae to varying light intensities 7 



Cultivation of shrimp in artificial ponds 8 



Population estimates 9 



Overwintering studies 9 



Present activities , 9 



Ecologically associated organisms 10 



Food studies 10 



Botton-i fauna survey 10 



Plankton study 10 



Florida Bay ecology studies 10 



Seasonal changes in relative abundance of postlarvae of pink shrimp entering the 



Everglades estuary 12 



Variations in abundance of juvenile pink shrimp emigrating fronr^ the Everglades 



National Park estuary to the commercial catch 13 



Shrinnp dynamics program 14 



Migration, growth, and mortality of commercial shrimps 15 



Postlarval and juvenile shrimp 1^ 



Postlarvae 16 



Juvenile shrimp 17 



Inshore current patterns 17 



Studies of postlarval shrimp in Vermilion Bay 18 



Prediction of commercial harvest 18 



Postlarval shrimp identification 18 



Estuarine Program 18 



Effects of engineering projects 19 



Effects of habitat modification 19 



Habitat rehabilitation 20 



Texas coast hurricane study project 22 



Ecology of western Gulf estuaries 23 



Hydrology 23 



Studies on the emigration of brown and white shrimp 24 



Brown shrimp 25 



White shrin-ip 26 



Character for identification of postlarval penaeid shrimp 26 



Evaluation of estuarine data 27 



Estuarine Atlas 27 



Fish food study 27 



Experimental biology progrann 28 



Shrimp metabolism 28 



