Van Oosten, John (continued) 



19h9» The sea lamprey — a threat to Great Lakes fisheries. 

 State Government, Vol, 22, pp. 283-28U, and 289. 



History of penetration and spread of the sea lamprey in 

 the upper Great Lakes, records of losses of production of lake 

 trout from lamprey depredations in Lakes Huron and Michigan, 

 comments on the lamprey as a threat to the Lake Superior lake 

 trout and to other species in all three lakes, and outline of 

 current and proposed sea lamprey research. 



19U9» A definition of depletion of fish stocks. Trans. Am. 

 Fish. Soc, Vol. 76 (1<5U6) , pp. 283-289. 



A listing of situations not to be held as synonymous with 

 depletion followed by the definition: " • • .reduction, through 

 overfishing, in the level of abundance of the exploitable seg- 

 ment of a stock that prevents the realization of the maximum 

 productive capacity." 



19ll9. Progress report on the sea lamprey study. The Fisher- 

 man, Vol. 17, No. 3j pp. 6, 9, and 10. 



Outline of program and statement of progress of coopera- 

 tive researches of the Great Lakes Sea Lamprey Committee composed 

 of representatives of the eight lake states, the Province of 

 Ontario, and the Fish and Wildlife Service. 



19^0. Progress report on the study of Great Lakes trout. 

 The Fisherman, Vol. 18, No, 5, pp. 5 and 8-10, and 

 No, 6, pp. ^ and 8. 



Outline of program of Great Lakes Lake Trout Committee 

 (composed of representatives of states bordering the three 

 upper lakes, the Province of Ontario, and the Fish and V/ild- 

 life Service) and report on results of plantings of about 

 U00,000 fin-clipped fingerlings in northern Lake Michigan in 

 19UU-19U6. Includes analysis of the data on the approximately 

 1,200 recoveries made through 19U9 with respect to movement 

 from planting locality, time out before recapture, growt.h,-«». 

 Presents also information on similar but smaller scale ex- 

 periments in Lakes Huron and Superior, and on growth in Lake 

 Michigan as determined from scale studies of samples from the 

 commercial catch. 



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