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January 1, 1951

The sea lamprey in the Great Lakes The sea lamprey in the Great Lakes

Abstract has not been submitted

Authors

Vernon C. Applegate

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1951

Status of the lake trout fishery in Lake Superior Status of the lake trout fishery in Lake Superior

Abstract has not been submitted

Authors

Ralph Hile, Paul H. Eschmeyer, George F. Lunger

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1951

An aquarium experiment on the American eel as a predator on larval lampreys An aquarium experiment on the American eel as a predator on larval lampreys

The parasitic sea lamprey, Petromyzon marinus, has in recent years spread throughout Lakes Huron and Michigan and is now firmly established in these waters (Applegate, 1949, Mich. Cons., 18 (4): 13-15). Coincident with their spread, the abundance of lake trout, Salvelinus namaycush, has declined in both lakes (Hile, 1949, Trans. Amer. Fish. Soc., 76 (1946): 121-147) and the lake trout as

Authors

Alfred Perlmutter

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1951

Decline of the trout fishery in Lake Michigan Decline of the trout fishery in Lake Michigan

Abstract has not been submitted

Authors

Ralph Hile, Paul H. Eschmeyer, George F. Lunger

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1951

Status of the lake trout fishery in Lake Superior Status of the lake trout fishery in Lake Superior

The production of lake trout in the United States waters of Lake Superior was low (only 1,465,000 pounds) in 1879, the first year for which there is a record. Expansion of the fishery must have started soon thereafter, for the take was 3,488,000 pounds in 1885, the next year for which we have statistics, and averaged 3,416,000 pounds in 1885–1892. The years after 1892 can be divided...

Authors

Ralph Hile, Paul H. Eschmeyer, George F. Lunger

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1951

Movement and dispersion of a blocked spawning run of sea lampreys in the Great Lakes Movement and dispersion of a blocked spawning run of sea lampreys in the Great Lakes

Abstract has not been submitted

Authors

Vernon C. Applegate, Bernard R. Smith

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1951

Downstream movement of recently transformed sea lampreys, Petromyzon marinus, in Carp Lake River, Michigan Downstream movement of recently transformed sea lampreys, Petromyzon marinus, in Carp Lake River, Michigan

In order to obtain more precise information concerning the downstream movement of recently transformed sea lampreys, a trapping device was operated in the Carp Lake River, Emmet County, Michigan, from October, 1948, to July, 1951. The period of downstream migration typically extends from the latter part of October to the middle of April. It varies, however, from year to year with...

Authors

Vernon C. Applegate, Clifford L. Brynildson

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1951