variance of these samples was also too 

 large for the T-test. 



CONCLUSIONS 



The results of the analysis of the 

 morphometric measurements used in 

 this study indicate that two groups of 

 silver hake may be distinguished, one 

 from the Gulf of Maine and the other 

 south of Cape Cod. Relative differences 

 in head length, length of pelvic fin, 

 length of ventral fin, and eye diameter 

 clearly indicate that the samples taken 

 from the major areas (Gulf of Maine, 

 Rhode Island, New York, New Jersey) 

 were not drawn from the same popula- 

 tion. The amount of intermixing between 

 the areas, if any, cannot be determined 

 fronn the present data. Results from 

 preliminary tagging experiments con- 

 ducted in both areas have not indicated 

 any movennent of silver hake between 

 areas. 



LITERATURE CITED 



HUBBS, C. L., and K. F. LAGLER. 

 1947. Fishes of the Great Lakes 

 region. Bulletin of the Cran- 

 brook Institute of Science, No. 

 26, 186 pp. 



MARR, J. C. 



1957. The problem of defining and 

 recognizing subpopulations of 

 fishes. U. S. Fish and Wildlife 

 Service, Special Scientific Re- 

 port- -Fisheries No, 208, pp. 

 1-7. 



QUENOUILLE, M. H. 



1950. Introductory statistics. But- 

 terworth-Springer Ltd., London, 

 248 + xii pp. 



SNEDECOR, G. W. 



1946. Statistical methods. 4th ed. 

 Collegiate Press, Ames, Iowa, 

 485 pp. 



MS. #1004 



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GPO 904493 



