KOELZ, WALTER. 



19^4. Two new species of cisco from the 

 Great Lakes. Univ. Mich., Mus. Zool., 

 Occas. Pap. 146:1-8, 



Original description of Leucichthys 

 alpenae-type collected in Lake Mich- 

 igan, 22 miles NNE. of Charlevoix, 

 Mich., June 15, 1923- -and of Leucichthys 

 reighardi -type from Lake Michigan, 

 18 miles N. by W. of Michigan City, 

 Ind., April 1, 1921. 



KOELZ, WALTER. 



1925. Description of a new cisco from the 

 Great Lakes basin. Univ. Mich., Mus. 

 Zool,, Occas. Pap. 158:1-3. 



Original description of Leucichthys 

 nipigon -type collected from Lake 

 Nipigon off MacDiarmid, July 28, 1922. 



KOELZ, WALTER, 



1926. Fishing industry of the Great Lakes. 

 Rep. U.S. Comm. Fish, for 1925:553-617. 



IT ^ 



General account of the fisheries. 

 Introductory section on boats, gear, 

 organization, and products is followed 

 by sections giving for individual Lakes: 

 brief description of Lakes; history of 

 development of fishery; fishing dis- 

 tricts; description of fishery for indi- 

 vidual species; and sumnnary of regxila- 

 tions on gear, size limits, and closed 

 seasons, 



KOELZ, WALTER, 



1928, Fisheries of the Great Lakes, General 

 review. In Elmer Higgins, Progress in 

 biological inquiries, 1926, p. 660-662. 

 Rep. U.S. Comm. Fish, for 1927. 



Brief comments on a variety of sub- 

 jects, including: productivity of the dif- 

 ferent Lakes in pounds per square mile; 

 importance of taxonomic study of 

 coregonids, a group contributing half of 

 the total Great Lakes catch; collapse of 

 the Lake Erie cisco fishery; and evi- 

 dences of general depletion and need for 

 international regulation of the Great 

 Lakes fisheries. 



KOELZ, WALTER, 



1929. Coregonid fishes of the Great Lakes. 

 U.S. Bur. Fish., Bull. 43 {pt. 2):297-643. 



Monographic taxonomic and natural 

 history study of coregonids of Great 

 Lakes and Lake Nipigon. Includes ex- 

 tensive data on morphological variation, 

 geographical and bathymetric distribu- 

 tion, food, size, nnaturity, and spawning 

 seasons and grounds. Discusses problem 

 of origin and speciation in coregonids 

 of the Great Lakes basin. 



KOELZ, WALTER. 



1931. The coregonid fishes of northeastern 

 America. Pap. Mich. Acad. Sci. Arts 

 Lett. 13:303-432. 



Elaborate systematization of 

 coregonids of the area. Divides 

 Leucichthys artedi into 24 subspecies 

 {17 described as new), Coregonus 

 clupeaformis into 7 subspecies (4 new); 

 and Prosopium quadrilaterale into 2 

 subspecies (1 new). Includes also origi- 

 nal description of Leucichthys bartletti . 



KRAMER, ROBERT H., vide: LLOYD L. 

 SMITH, JR. 



KREFTING, LAURITS W., vide: LLOYD L. 

 SMITH, JR. 



KRUMHOLZ, LOUIS A., and RALPH HILE. 

 1944. Fillet weights and loss in filleting 

 of yellow pikeperch, Stizostedion v. 

 vitreum (Mitchill), from Saginaw Bay, 

 November 1942, May 1943, and April 

 1944, Mich. Dep. Conserv., Inst. Fish. 

 Res., Rep. 973:1-5. 



Review of series of filleting experi- 

 ments that served as basis of present 

 Michigan minimunn legal weight of 9 

 ounces for walleye fillets. 



LENNON, ROBERT E. 



1954. Feeding mechanism of the sea 

 lannprey and its effect on host fishes. 

 Fish Wildl. Serv.. Fish. Bull. 56:247- 

 293. 



Attachment to the fish and penetration 

 of the fish's body by the sea lamprey 

 are furthered by the suctorial, tooth- 

 lined mouth and the rasping tongue. 

 Feeding is assisted by secretions from 

 the buccal glands, which are potent 

 anticoagulants and have a marked 

 hemolytic and cytolytic action. Most 

 victims die of hemorrhage; the 

 erythrocyte count of dying fish is 

 reduced 84 percent. Survivors of 

 lamprey attacks often die of fungus 

 infection of the wound. Data are given 

 on the relative frequency of wounds on 

 different parts of the fish's body and 

 the gross pathology is described for 

 woxinds in different locations. 



LENNON, ROBERT E. 



1955. Artificial propagation of the sea 

 lamprey, Petromyzon marinus. Copeia 

 1955(3):235-236. 



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