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January 1, 1952

Changes in the lake trout fishery in the three upper lakes Changes in the lake trout fishery in the three upper lakes

Abstract has not been submitted

Authors

Ralph Hile

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1952

Sea lamprey spawning; Michigan streams of Lake Superior Sea lamprey spawning; Michigan streams of Lake Superior

No abstract available.

Authors

Howard A. Loeb, Albert E. Hall

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1952

A method of marking larval lampreys A method of marking larval lampreys

Biological investigations of lamprey populations in central New York have indicated a need for developing a method of marking larvae of the sea lamprey, Petromyzon marinus Linnaeus, and the American brook lamprey, Lampetra lamottei (Lesueur) Since lamprey larvae live in burrows in the soft sediments of the stream bottom, the use of an external tag is impractical.

Authors

Roland L. Wigley

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1952

Diseases and parasites of the sea lamprey, Petromyzon marinus, in the Lake Huron basin Diseases and parasites of the sea lamprey, Petromyzon marinus, in the Lake Huron basin

Sea lampreys from the Lake Huron basin carried no external parasites and showed a fairly low degree of infection by internal parasites. The material examined represented three life-history stages of the sea lamprey. Recently transformed downstream migrants (215 specimens) harbored only nematodes belonging to the genus Camallanus. The percentage of infection was 2.3. Active feeders from...

Authors

Alberton L. McLain

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1952

Age, growth, and production of yellow perch in Lake Erie Age, growth, and production of yellow perch in Lake Erie

No abstract available.

Authors

Frank W. Jobes

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1952

Fishing regulations Fishing regulations

Abstract has not been submitted

Authors

Ralph Hile

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

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

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

No abstract available.

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

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