SMITH, BERNARD R., vide: VERNON C. 

 APPLEGATE; LEO F. ERKKILA. 



SMITH, LLOYD L,, JR., and ROBERT H. 

 KRAMER, 

 1964. The spottail shiner in Lower Red 

 Lake, Minnesota. Trans. Amer. Fish. 

 Soc. 93(l):35-45. 



Growth rates, strength of year 

 classes, and food utilization were 

 studied from 14,654 spottail shiners 

 collected in 1955-57. Body-scale rela- 

 tions of males and females differed, 

 and females grew faster than males. 

 Strength of year classes was closely 

 related to size of spawning population. 

 Food varied according to the availability 

 of plankton and bottom fauna, but feed- 

 ing was selective. The larger spottail 

 shiners preyed on shiner eggs. 



SMITH, LLOYD L., JR., and LAURITS W. 

 KREFTING. 

 1954. Fluctuations in production and abun- 

 dance of comnnercial species in the Red 

 Lakes, Minnesota, with special refer- 

 ence to changes in the walleye popula- 

 tion. Trans. Amer. Fish. Soc. 83:131- 

 160. 



Analyses of production statistics, 

 1917-53, and of records of catch, ef- 

 fort, and abundance, 1930-53, with spe- 

 cial respect to the principal commercial 

 species, walleye and yellow perch. 

 Changes of walleye abundance are in- 

 dependent of fishing pressure but trace- 

 able to fluctuations of year-class 

 strength. Year-class strength could not 

 be correlated with abundance of brood 

 fish, abundance of competing species, 

 hatchery plantings, or weather. Provi- 

 sion for prediction of abundance and 

 flexible regulation are recommended. 



SMITH, LLOYD L., JR., and RICHARD L. 

 PYCHA. 

 1960. First-year growth of the walleye, 

 Stizostedion vitreum vitreum (Mitchill). 

 and associated factors in the Red Lakes, 

 Minnesota. Limnol. Oceanogr. 5(3): 

 281-290. 



First-year growth in 1940-56 fluctu- 

 ated from 15.0 percent below to 9.0 

 above the 17-year average. The fluctu- 

 ations were not correlated with water 

 temperature, year-class strength, or 

 the abundance of large walleyes or 

 yellow perch. Date of spawning did 

 affect the growth, and the length at- 

 tained by the end of the first year was 

 largely determined by size in mid- 

 July, before the walleyes had turned to 



a diet of fish. Growth in the first and 

 later years of life was correlated, but 

 not closely. 



SMITH, LLOYD L., JR., and RICHARD L. 

 PYCHA. 

 1961. Factors related to commercial pro- 

 duction of the walleye in Red Lakes, 

 Minnesota. Trans. Amer. Fish. Soc. 

 90(2):190-217. 



Annual fluctuation of growth that 

 ranged from 30.7 percent above to 

 42.2 percent below average in 1941-56 

 and variations of year-class strength 

 as great as 23-fold affected strongly 

 the availability of walleyes to com- 

 mercial gill nets. These factors, the 

 fishing mortality of preceding years, 

 and the seasonal distribution of fishing 

 effort were major determinants of com- 

 mercial production. Commercial 

 catches contained age-groups II-XII but 

 consisted principally of age-groups IV- 

 VIII. Maximum availability is at 15.1 

 inches. Total annual mortality beyond 

 that length is 0.66. 



SMITH, LLOYD L., JR., vide: MARVIN D. 

 GROSSLEIN; JOHN L. MAGNUSON; 

 RICHARD L. PYCHA. 



SMITH, MANNING A., VERNON C. APPLE- 

 GATE, and B. G. H. JOHNSON. 



1960. Colorimetric determination of halo- 

 genated nitrophenols added to streams 

 as sea lamprey larvicides. Anal.Chem. 

 32(12):1670-1675. 



Precise knowledge of the concentra- 

 tion of the larvicide in the stream 

 water is essential to effective use for 

 sea lamprey control. A rapid procedure 

 for determining the concentration under 

 field conditions is based on measure- 

 ment of the intensity of the alkaline 

 color. Variations caused by changes in 

 stream color are corrected by use of 

 a nomograph to convert instrumental 

 reading to parts per million. 



SMITH, MANNING A., VERNON C. APPLE- 

 GATE, and B. G. H. JOHNSON. 



1961. Physical properties of some halo- 

 nitrophenols. J. Chem. Eng. Data 6(4): 

 607-608. 



Certain physical properties are re- 

 ported for eight mononitrophenols that 

 are selectively toxic to sea lamprey 

 annmocetes. Absorption maxima and 

 molar absorptivities in the ultraviolet 

 range and principal infrared bands are 

 described. Acidity characteristics of the 

 larvicides were measured. 



33 



