MARYLAND (Cont. ) 



Deep Creek Lake; began June 1956, to close October 1957; $600; Harold J. 

 Elser, Leader. 



Address inquiries to: Harold J. Elser, Department of Research and Educa- 

 tion, Solomons, Maryland. 



2. Investigations of Growth Rates of Fish in Fresh Waters of Maryland 



This project is designed to estimate the growth rates of fish in various 

 fresh waters as a reflection of the environmental conditions. 



Statewide; began 1948, to close 1958; Harold J. Elser, Leader. 

 Address inquiries to: Harold J. Elser, as in No. 1 above. 



3. Investigation of Fish Population Structures in Fresh Waters of Marylzmd 



The objective is to determine the relation between population structure 

 and goodness of fishing. 



Statewide; began September 1955, to close 1958; Harold J. Elser, Leader; 

 reports available. 



Address inquiries to: Harold J. Elser, as in No. 1 above. 



4. Investigations Useful for Fisheries Management of Deep Creek Lake 



The objectives are to estimate the harvest of fish, to learn the population 

 structure, and to find out how to improve the population structure. The study 

 also concerns movements, spawning habits, and susceptibility to poisons of 

 undesirable species, especially yellow perch. 



Deep Creek Lake and Solomons; began 1948, indefinite; $2, 000; Harold J. 

 Elser, Leader; reports available. 



Address inquiries to: Harold J. Elser, as in No. 1 above. 



5. Life History of the White Perch in Maryland Waters With Special Reference to 

 the Patuxent River 



The objectives are: (1) To learn the reproductive behavior, early develop- 

 ment, and factors, such as salinity and temperature, that are important in the 

 biology of white perch; (2) to determine the movements on a seasonal basis 

 by the mark and recapture method in the Patuxent River; (3) to determine the 

 age distribution and growth of fish, to learn the occurrence of dominant year 

 classes, and to elucidate other features in populations of white perch collected 

 over a period of five years by means of scale analysis; (4) to deternnine the 

 food habits on a seasonal basis and in different parts of its range in estuaries, 

 the occurrence of parasites, and other features in its life history. 



Johns Hopkins School of Hygiene and Public Health cooperating; Chesapeake 

 Biological Laboratory; began 1952, to close 1957; Romeo Mansueti, Leader. 



Address inquiries to: Romeo Mansueti, Chief Fish Biologist, Chesapeake 

 Biological Laboratory, Maryland Department of Research and Education, 

 Solomons, Maryland. 



6. Preparation of Detailed Descriptions, Diagnostic Keys, and Scientific Illustra- 

 tions of the Various Stages of Fish Eggs, Larvae and Juveniles in the Identi- 

 fication of Important Species of Chesapeake Bay and Tributaries 



The objectives are: (1) To depict the species -specific features of the 

 developmental stages of fish so that when they are combined with descriptions 

 they will provide a basis for identification; (2) to fill in the gaps in the know- 

 ledge of the early developmental stages of all species that spawn in Chesa- 

 peake Bay and tributaries so that it will be possible to extend studies of the 

 critical early developmental period in fishes; (3) to obtain and rear from known 

 species the eggs to the juvenile stage where identification is no longer question- 

 able. 



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