Van Oosten, John 



1938 . The age and growth of the Lake 



Erie sheepshead, Aplodlnotus 



grunniens Rafinesque . Pap . Mich . 



Acad. Sci., Art, and Lett., VoL 



23 (1937), pp. 651-668. 

 Life -hi story study including data on 

 age and size composition, growth in 

 length and weight, growth compensa- 

 tion, length -weight relationship, and 

 condition . The large size attained 

 by some sheepshead was shown to de- 

 pend on a long life . 



1938. From Cisco to perch to pike. 

 State Government, Vol. 11, pp. 

 55-57. 



Review of decline of production of 

 selected species in certain lakes with 

 emphasis on the progressive nature 

 of depletion in the Great Lakes, shown 

 especially by deterioration of average 

 quality of the catch as fishermen 

 turned to cheaper species after deplet- 

 ing the stocks of the more desirable 

 varieties . 



1939. A common concern- • -Great Lakes 

 fisheries for anglers and fishers. 

 Mich. Game Trails, Vol. 1, No. 5, 

 pp. 1-2. 



A plea for greater interest and assist- 

 ance from sportsmen and the general 

 public to put an end to the inadequate 

 and divided control responsible for 

 the depletion of Great Lakes fisheries 

 (illustrated by selected examples of 

 decline of production from earlier 

 "normals"). 



1939. Save the Great Lakes fisheries'. 



Outdoor Am., Vol. 4, No. 3, pp. 



4-5 and 7. 

 A call for public support of attempts 

 to obtain immediately discretionary 

 power for conservation departments, 

 and ultimately international control 

 of the Great Lakes fisheries. Such 

 moves were held to offer the only 

 means to obtain the drastic measures 

 needed to save the fisheries. 



1939. Battle rages over closing Potagan- 



nissing Bay to commercial fishermen. 

 Mich. Game Trails, Vol. 1, No. 3, 

 pp. 19-20. 

 Review and summary of 1939 report 

 by Westerman and Van Oosten on the 

 Potagannissing Bay problem . 



1939. The age, growth, sexual maturity, 

 and sex ratio of the common white- 

 fish, Coregonus clupeaformis 

 (Mitchill), of Lake Huron. Pap. 

 Mich. Acad. Sci., Arts, and Lett., 

 Vol. 24, Pt. 2, (1938), pp. 195-221. 

 General life -history study of whitefish 

 from Alpena, Michigan, area of Lake 

 Huron including data on age composition 

 (III-XII represented, IV-VII most 

 plentiful), size distribution, growth 

 rate, length -weight relationship and 

 condition, sex ratio (about 50:50 but 

 males scarce at higher ages), and 

 maturity (size limit of 22 inches neces- 

 sary to give immature females full 

 protection) . 



1939. Can the Great Lakes fisheries be 

 saved? Am. Wildlife, Vol. 28, 

 No. 3, pp. 129-135. 



Alarming account of the commercial 

 extinction of valuable species in past 

 years and of the current rapid depletion 

 of still others, followed by a review of 

 the failure of all attempts to obtain 

 adequate regulations through interstate 

 cooperation and an urgent appeal for 

 support of international control of the 

 Great Lakes fisheries. 



1940. The smelt, Osmerus mordax 

 (Mitchill). Mich. Dept. Cons., 

 13 pp. 



Popular account of the natural history 

 of the smelt- -habitat, spawning, growth, 



food, predators, , its introduction 



and spread in the Great Lakes, and its 

 possible future importance as a food 

 and sport fish and as a competitor with 

 and predator on native species . 



1941. The age and growth of fresh -water 

 fishes. In: A Symposium on Hydro- 

 biology, Univ. of Wis. Press, pp. 196- 

 205. 



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