river location in subsequent autumns, as indicated by tag returns. 

 Sauger were commonly recaptured during the same autumn tagged, near 

 the captive site, while only 3 fall-tagged sauger were ever 

 recaptured (including angler returns) at a different location the 

 same fall. A sauger tagged in a Missouri River tributary on April 

 3, 1978 moved 460 km to the Yellowstone River near Miles City and 

 was recaptured near Miles City on July 24, July 31, and November 11 

 of 1978. 



Distribution of Eggs 



An expansive submerged gravel bar which extends over 2 km 

 downstream from Intake diversion was often occupied by large 

 numbers of walleye and sauger during spring. During 1977 to 1979 

 large numbers of eggs were collected from the Intake gravel bar 

 during April and early May. These eggs were positively identified 

 as those of Stizostedion sp. by hatching them in aquaria. Larvae 

 had characteristics of Stizostedion sp. described by Nelson (1968b) 

 and Haugue et al. (1976) . Both mature sauger and walleye have been 

 collected at this location during spring. To identify eggs 

 according to species, diameters of eggs collected from the Intake 

 gravel bar and from ripe female walleye and sauger were measured to 

 the nearest 0.01 mm during 1977, 1978, and 1979. 



In 1978 diameters of 107 eggs from three ripe female walleye 

 were measured. The diameters ranged from 1.80 to 2.35 mm with a 

 mean diameter of 2.09 mm and a standard deviation of 0.143. Only 

 11 (10%) of the eggs had diameters of 1.90 mm or smaller. A one 



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