An 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 original description of Leucich- 

 thys bartletti . 



Krumholz, Louis A., and Ralph Hile 



1944. Fillet weights and loss in filleting 

 of yellow pikeperch, S tizostedion 

 V . vitreum (Mitchill), from Sag- 

 inaw Bay, November 1942, May 

 1943, and April 1944. Inst. Fish. 

 Res., Michigan Dept. Cons., 

 Rep. No. 973, 5 pp. 

 Review of series of filleting experi- 

 ments that served as basis of present 

 Michigan minimum legal weight of 9 

 ounces for walleye fillets. 



Lennon, Robert E . 



1954. Feeding mechanism of the sea 

 lamprey and its effect on host 

 fishes. Fish. Bull., Fish and 

 Wildlife Serv., Vol. 56, pp. 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 tlie rasping tongue. 

 Feeding is assisted by secretions 

 from the buccal glands which are po- 

 tent anticoagulants and have a marked 

 hemolytic and cytolytic action. Most 

 victims die of hemorrhage; the ery- 

 throcyte count of dying fish is reduced 

 84 percent. Survivors of lamprey at- 

 tacks often die of fungus infection of 

 the wound. Data are given on the 

 relative frequency of wounds on differ- 

 ent parts of the fish's body and the 

 gross pathology is described for wounds 

 In different locations . 



1955. Artificial propagation of the sea 

 lamprey, Petromyzon marlnus . 

 Gopela 1955, No. 3^ pp. 235-236. 



An account of the stripping, fertiliza- 

 tion, hatching (10 to 16 days at 67* - 

 71° F), early development, growth and 



behavior. Observations were con- 

 cluded at the end of 21 weeks. 



Loeb, Howard A. 



1953. Sea lamprey spawning: Wisconsin 

 and Minnesota streams of Lake 

 Superior. Fish and Wildlife Serv., 

 Spec. Sci. Rep. --Fish. No. 97, 

 36 pp. 

 Report on the examination of all 

 tributaries in Minnesota, part of the 

 streams of Wisconsin, and the streams 

 of Grand Island. Streams are classi- 

 fied as to their "lamprey potential" on 

 the basis of spawning facilities, larval 

 habitat, and presence of natural or 

 man-made barriers to migration. 



Loeb, Howard A., and Albert E. Hall, Jr. 

 1952. Sea lamprey spawning: Michigan 

 streams of Lake Superior. Fish 

 and Wildlife Serv., Spec. Sci. Rep.-- 

 Fish. No. 70, 68 pp. 

 Results of surveys of 869 streams in 

 1950 and 178 in 1951 (both figures in- 

 clusive of tributaries) to ascertain 

 occurrence of sea lamprey spawning 

 runs and to estimate productive poten- 

 tials of streams on basis of extent of 

 spawning grounds and larval habitat. 

 Tentative outline is given of control 

 program (based principally on electric- 

 al devices and barrier dams) for the 

 194 streams on which control ultimate- 

 ly may prove necessary. 



McLain, Alberton L. 



1952. Diseases and parasites of the sea 



lamprey, Petromyzon marinus , in 



the Lake Huron basin. Trans. Am. 



Fish. Soc, Vol. 81 (1951), pp. 



94-100. 

 Results of examination of 215 recently 

 transformed young, 29 active feeders 

 from the lake, and 257 sexually mature 

 upstream migrants. Evidence of disease 

 was small. Percentages of parasitic In- 

 festation were: recently transformed 

 young--2.3; lake feeders --3 1.0; 

 sexually mature lampreys --14. 8. 

 Young lampreys harbored nematodes 

 only; last two groups carried acantho- 

 cephalans, nematodes, andcestodes. 



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