Applegate, Vernon C. (continued) 



19^1. Sea lamprey investigations. IIo Egg development, 



maturity, egg production, and percentage of unspawned 

 eggs of sea lampreys, Petromyzon marinus , captured in 

 several Lake Huron tributaries. Pap, Mich. Acad, Sci., 

 Arts, and Lett., Vol. l6 (I9ii9) , pp. 71-90. 



Investigation of sex cycle of females — sizes of eggs, 

 number per individual (range of 2[i,000 to 110,000; mean of 

 61,^00) and its variation with body length and weight, and 

 percentage of unspawned eggs (estimated at 5.0). 



Applegate, Vernon C, and Clifford L, Brynildson 



19^2. Downstream movement of recently transformed sea lampreys, 

 Petromyzon marinus , in the Carp Lake Eiver, Michigan. 

 Trans. Am. Fish. Soc, Vol. 81 (19^1), pp. 27$-290o 



Three-year count of daily catch of newly transformed 

 migrants captured by inclined-plane screen and trap. Includes 

 data on sizes of migrants and evidence of rise in stream water 

 level as major factor inducing migration. 



Applegate, Vernon C, and Bernard R. Smith 



1950. Sea lamprey spawning runs in the Great Lakes, 19^0. 

 Fish and Wildlife Serv., Spec. Sci. Rep.: Fish. No. 

 61, U9 pp. 



Records of numbers, sex ratio, sizes,* ••of adult and 

 recently transformed sea lampreys captured in experimental 

 weirs and traps operated in various streams tributary to 

 Lakes Michigan, Huron, and Superior. 



19^1. Movement and dispersion of a blocked spawning run 

 of sea lampreys in the Great Lakes, Trans. l6th 

 N. Am, Wildlife Gonf„, pp. 2l4.3-25l. 



Analysis of data on 289 recoveries from 2,81i3 sea 

 lampreys tagged after capture below a dam in the Gheboygan 

 River (tributary to Straits of Mackinaw). Lampreys lack the 

 "homing" instinct. 



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