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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

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

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, 1950

Green Bay walleyes: a report on the scientific investigation of the marked increase in abundance of walleyes in Green Bay Green Bay walleyes: a report on the scientific investigation of the marked increase in abundance of walleyes in Green Bay

Abstract has not been submitted

Authors

Ralph Hile

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1950

A nomograph for the computation of the growth of fish from scale measurements A nomograph for the computation of the growth of fish from scale measurements

Directions are given for the construction and operation of a nomograph that can be employed for the computation of the growth of fish from scale measurements regardless of the nature of the body-scale relationship, so long as that relationship is known. The essential feature of the nomograph that makes rapid calculations possible is a ruler on which the graduations are in terms of length...

Authors

Ralph Hile

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1950

Natural history of the sea lamprey, Petromyzon marinus, in Michigan Natural history of the sea lamprey, Petromyzon marinus, in Michigan

No abstract available.

Authors

Vernon C. Applegate

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1950

Progress report on the study of Great Lakes trout Progress report on the study of Great Lakes trout

Abstract has not been submitted

Authors

John Van Oosten

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1950

Sea lamprey control Sea lamprey control

Abstract has not been submitted

Authors

James W. Moffett

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1950

Progress report on the sea lamprey program Progress report on the sea lamprey program

Abstract has not been submitted

Authors

James W. Moffett

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1950

A cheek tag for marking fish, with semi-automatic pliers for application of tag A cheek tag for marking fish, with semi-automatic pliers for application of tag

Abstract has not been submitted

Authors

Louella E. Cable

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1949

A definition of depletion of fish stocks A definition of depletion of fish stocks

Attention was focused on the need of a common and better understanding of the term depletion as applied to the fisheries in order to eliminate if possible the existing inexactness of thought on the subject. Depletion has been confused at various times with at least ten different ideas associated with it but which, as has has heen pointed out, are not synonymous at all. In defining...

Authors

John Van Oosten

Ecosystems Mission Area, Great Lakes Science Center

January 1, 1949

Sea lamprey investigation. II. Egg development, maturity, egg production, and percentage of unspawned eggs of sea lampreys, Petromyzon marinus, captured in several Lake Huron tributaries Sea lamprey investigation. II. Egg development, maturity, egg production, and percentage of unspawned eggs of sea lampreys, Petromyzon marinus, captured in several Lake Huron tributaries

Abstract has not been submitted

Authors

Vernon C. Applegate

Ecosystems Mission Area, Great Lakes Science Center