the early attempts at mechanical block- 

 ing of spawning migrations and the 

 capture or electrocution of recently 

 transformed lampreys in their down- 

 stream nnigration, to the invention of 

 more sophisticated electric barriers, 

 and finally the discovery of a selectively 

 toxic chemical. The first three field 

 tests of selective larvicides are de- 

 scribed. 



MOFFETT, JAMES W. 



1958c. Trout in the Great Lakes. U.S. 

 Trout News 3{3):8-10. 



Popular acco\int of penetration of sea 

 lamprey into upper Great Lakes, of its 

 effects on fish stocks, and of research 

 to bring about lamprey control. Details 

 early experimentation on selective toxi- 

 cants for destruction of sea lamprey 

 larvae and touches on problems of 

 rehabilitating late trout stocks reduced 

 or destroyed by lampreys. 



MOFFETT, JAMES W. 



1960a. Attack on the sea lannprey- -a report 

 of progress. Mich. Conserv, Z9(5):7-9. 



Lake trout stocks of the Great Lakes 

 were destroyed by the sea lamprey-- 

 not by overfishing, disease, other 

 predators, or failure of food supply. 

 Lampreys have damaged also stocks of 

 whitefish, the larger chubs, suckers, 

 and walleyes. For control, lampreys 

 must be attacked in streanns as spawn- 

 ers or as larvae. Blocking of spawning 

 runs long offered the best means of 

 control, but the discovery of chemicals 

 that are selectively toxic to sea lamprey 

 larvae has nnade possible the more 

 rapid reduction of the pest. After 

 lamprey stocks are minimized, the 

 once plentiful, high-priced species of 

 fish can be restored. 



MOFFETT, JAMES W. 



1960b. The American Fisheries Society. Its 

 objectives: A chronicle of fishery con- 

 servation in North America. U.S. Trout 

 News 5(4):20-22. 



In his capacity as the incumbent 

 president, author reviews origin and 

 development of the American Fisheries 

 Society and appraises current outlooks 

 in fisheries. 



MOFFETT, JAMES W. 



1962. An instance of upwelling along the 

 east shore of Lake Michigan, 1955. 

 In Proc. 5th Conf. Great Lakes Res., 

 126. Univ. Mich., Inst. Sci. Technol., 

 Great Lakes Res. Div., Publ. 9. 



Tennperature records from bathy- 

 thernnograph casts made during eight 

 crossings of Lake Michigan between 

 Ludington, Mich., and Manitowoc, Wis., 

 Aug. 4-16, 1955, permitted description 

 of a massive upwelling that extended 

 8-10 miles lakeward fronn the east 

 shore. At maximum development, sur- 

 face temperatures varied from 25° to 

 4.7° C. Persistent north and northeast 

 winds probably caused the upwelling. 



MOFFETT, JAMES W. 



1963. Biological Laboratory. Amer. Zool. 

 3(3):374. 



Gives location of the Ann Arbor 

 Laboratory and reviews briefly the 

 research program in relation to con- 

 ditions in the Great Lakes and in the 

 Lake fisheries. 



MOFFETT, JAMES W., vide: VERNON C. 

 APPLEGATE; ALFRED M. BEETON. 



MRAZ, DONALD. 



1952. Movements of yellow perch marked in 

 southern Green Bay, Lake Michigan, 

 in 1950. Trans. Amer. Fish. Soc. 

 81:150-161. 



Analysis of data on recoveries in the 

 commercial fishery of 108 of 4,172 

 spawning yellow perch marked in south- 

 ern Green Bay in May 1950 by strap 

 tags attached to the operculum. Re- 

 coveries indicated progressive north- 

 ward movement following spawning. 

 Fish recaptured outside the marking 

 area averaged significantly longer than 

 those recaptured locally. Rise of per-i 

 centage return with increase in size 

 suggested greater ability of larger fish 

 to survive tagging or to retain tags. 

 Marking by fin-clipping proved unpro- 

 ductive. 



MRAZ, DONALD. 



1964a. Age and growth of the round white- 

 fish in Lake Michigan. Trans. Amer, 

 Fish. Soc. 93(l):46-52. 



Age-group III (66.3 percent) and IV 

 (20.6 percent) dominated the catch of 

 commercial gill nets in northwestern 

 Lake Michigan. The round whitefish 

 reached 12.3 inches in 3 years and 

 18.9 inches in 8. This growth is much 

 more rapid than that reported earlier 

 for the species in Lake Superior. Weight 

 of round whitefish of Lake Michigan 

 increased as the 3.2940 power of the 

 length. Some males (36 percent) but no 

 females were mature as the II group. 

 All fish, males and females, older than 

 age-group III were mature. 



29 



