PYCHA, RICHARD L., vide: LLOYD L. SMITH, 

 JR. 



SAWYER, PHILIP J. 



1957. Laboratory care and feeding of larval 

 lannpreys. Copeia 1957(3):Z44. 



Describes equipment and procedure 

 whereby ammocetes were maintained 

 in the laboratory in good condition for 

 6 months. Touches on: kind and size of 

 containers and nature of substrate in 

 them; dechlorination of water and main- 

 tenance of flow; and rearing of food 

 organisms and schedule and procedure 

 of feeding. 



SAWYER, PHILIP J. 



1959a. Burrowing activities of the larval 

 lampreys. Copeia 1959(3):256-257. 



Larval lannpreys enter a substrate 

 by a swimming motion that forces the 

 head into it to the depth of about an 

 inch. Additional penetration is accom- 

 plished by manipulations of the oral 

 hood and undulatory movements of that 

 part of the body that is within the sub- 

 strate. The burrowing action is de- 

 scribed in detail. 



SAWYER, PHILIP J. 



1959b. Effects of certain chemicals on 

 mucus-producing cells of Petromyzon 

 marinus. Trans. Amer. Fish. Soc. 

 88(4):305-309. 



Histochemical study of mucus- 

 secreting cells of larval sea lampreys 

 that had been poisoned by several com- 

 pounds revealed different reactions by 

 cells fronn the tips of gill filaments, 

 the lining of the gill chamber, and 

 various locations in the epidermis. 

 The secretory cells of the gills were 

 without exception most sensitive to 

 chennical irritation. 



SCOTT, W. B., and STANFORD H. SMITH. 

 1962. The occurrence of the longjaw cisco, 

 Leucichthys alpenae , in Lake Erie. 

 J. Fish. Res. Bd. Can. 19(6):1013- 

 1023. 



This first report of alpenae in Lake 

 Erie is based on 33 specimens col- 

 lected in 1946-47 and 1957. Mor- 

 phometric characters are compared 

 in detail with those of L. artedi of 

 Lake Erie. Sharpest difference is in 

 mean number of gill rakers on first 

 branchial arch ( alpenae , 35; artedi , 

 46); the species differed also as to 

 certain body proportions and growth 

 rate. 



SELDEN, CHARLES P.. and HARRY VAN 

 METER. 

 1960. Lake Erie walleyes-again on the 

 upswing? Ohio Conserv. Bull. 24( 1 ):5-7. 



Account of 1959 observations on the 

 1959 year class, the first good year 

 class of walleyes in Lake Erie since 

 1954. The lack of positive correlation 

 between number of spawners and suc- 

 cess of the hatch is stressed; other, 

 still undetermined, factors seem to 

 control year-class strength. 



SMITH, ALLEN J., vide: JOHN H. HOWELL. 



SMITH, BERNARD R. 



1962. Spring and summer temperatures of 

 streams tributary to the south shore of 

 Lake Superior, 1950-60. U.S. Fish 

 Wildl. Serv., Spec. Sci. Rep. Fish. 

 410, vi + 57 p. 



Spring and summer water tempera- 

 tures were recorded at sea lamprey 

 control devices in 1950-56. These data 

 are recorded by 10- or 1 1-day averages 

 as a reference source for other fishery 

 researchers. Means of maximum-mini- 

 mum readings were closely similar to 

 single readings from pocket thermom- 

 eters. 



SMITH, BERNARD R., and OLIVER R. 

 ELLIOTT. 

 1953. Movement of parasitic-phase sea 

 lampreys in Lakes Huron and Michigan. 

 Trans. Amer. Fish. Soc. 82:123-128. 



Recoveries from 219 parasitic-phase 

 sea lampreys tagged in northwestern 

 Lake Huron totaled 38 or 17.7 percent. 

 One was recaptured in northeastern 

 Lake Michigan and the remaining 37 in 

 Lake Huron. Movement was generally 

 southward; five individuals had traveled 

 more than 150 miles, four of them to 

 Canadian waters of southern Lake 

 Huron. 



SMITH, BERNARD R., and ALBERTON L. 



McLAIN. 



1962. Estimation of the brook and sea 



lamprey ammocoete populations of 



three streams. Great Lakes Fish. 



Comm., Tech. Rep. 4:1-18. 



Larval and transforming lampreys 

 were marked with dyes and recovered 

 in samples of dead animals during 

 subsequent treatments of streams with 

 selective toxicants. Population esti- 

 mates for three streams (Petersen 

 method) were 4,200, 30,600, and 336,700 

 individuals. These figures confirmed 

 broad judgments formed earlier from 

 stream surveys with electric shockers. 



32 



