Van Oosten, John (continued) 



1937o The dispersal of smelt, Osmerus mordax (Mitchill), in 



the Great Lakes regionc Trans, Am. Fish. Soc, Volo 66 

 (1936), pp. 160-171. 



Record of plantings of smelt in the Great Lakes and a 

 year-by-year account of the spread of the smelt through Lakes 

 Michigan, Huron, Superior, and Erie, 



1937. The North Central States Wildlife Conference. The 

 Prog, Fish. -Cult., Bur. Fish. Memo. 1-131, No. 26, 

 pp. 1^-19. 



Review and evaluation of papers and discussions at the 

 conference on such questions as: methods and values of surveys; 

 fish populations of "type" waters and limitations of the type- 

 water conceptj effectiveness of artificial propagation and en- 

 vironmental improvement. 



1937. The age, growth, and sex ratio of the Lake Superior 



long jaw, Leucichthys zenithicus (Jordan and E^/ermann) , 

 Pap. Mich. Acad. Sci., Arts, and Lett., Vol, 22 (1936), 

 pp. 691-711. 



Life-history study giving data on age and size distribu- 

 tion, growth in length and weight, growth compensation, sex 

 ratio, length-weight relationship, and condition (a negative 

 correlation demonstrated between the growth rate and condition 

 of individual fish) « Protection of longjaw to end of sixth 

 year of life (total length, about 10.3 inches) is advocated. 



1937, Artificial propagation of commercial fish of the Great 

 Lakes, Trans, 2nd N, Am, Wildlife Conf,, pp. 60^-612. 

 [Reprinted with slight changes of title and text in The 

 Progressive Fish-Culturist, Bur. Fish. Memo, 1-131 j 

 No. 28, 1937] 



General discussion of the subject, with emphasis on the 

 facts that -correlations have not been found between fry plant- 

 ings and the later take of fish and that fish-culturists have 

 underestimated the effectiveness of natural reproduction and 

 also have failed to consider the true loss of eggs to the lake 

 (killing of green fish, inefficient stripping,"*) attendant 

 on artificial propagation. 



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