Author: Allan E. Thomas
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 24
Book Description
A spawning and incubation channel constructed in 1959 on Abernathy Creek near Longview, Washington, has been used for seasons to incubate fall chinook salmon and chum salmon eggs. Survival of eggs from both species was higher than reported for other channels and controlled-flow projects. Studies included effects of sedimentation, egg planting density, and stage of egg development at planting on survival. In early experiments sediment in the upper sections substantially reduced survival. In later experiments, after the construction of a sand trap and settling chamber, survivals significantly increased.
Operation of Abernathy Channel for Incubation of Salmon Eggs
Author: Allan E. Thomas
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 24
Book Description
A spawning and incubation channel constructed in 1959 on Abernathy Creek near Longview, Washington, has been used for seasons to incubate fall chinook salmon and chum salmon eggs. Survival of eggs from both species was higher than reported for other channels and controlled-flow projects. Studies included effects of sedimentation, egg planting density, and stage of egg development at planting on survival. In early experiments sediment in the upper sections substantially reduced survival. In later experiments, after the construction of a sand trap and settling chamber, survivals significantly increased.
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 24
Book Description
A spawning and incubation channel constructed in 1959 on Abernathy Creek near Longview, Washington, has been used for seasons to incubate fall chinook salmon and chum salmon eggs. Survival of eggs from both species was higher than reported for other channels and controlled-flow projects. Studies included effects of sedimentation, egg planting density, and stage of egg development at planting on survival. In early experiments sediment in the upper sections substantially reduced survival. In later experiments, after the construction of a sand trap and settling chamber, survivals significantly increased.
Technical Papers
Author: United States. Bureau of Sport Fisheries and Wildlife
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 398
Book Description
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 398
Book Description
Technical Papers of the Bureau of Sport Fisheries and Wildlife
Author:
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 472
Book Description
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 472
Book Description
Technical Papers of the Bureau of Sport Fisheries and Wildlife
Author: United States. Bureau of Sport Fisheries and Wildlife
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 674
Book Description
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 674
Book Description
Biological Studies on the Hemoflagellates Cryptobia Cataractae and Cryptobia Salmositica
Author: R. E. Putz
Publisher:
ISBN:
Category : Cryptobia
Languages : en
Pages : 32
Book Description
Studies on two hemoflagellates of fish were carried out to determine biological parameters: host range, vector relations, in vivo culture, in vitro culture, pathogenicit, and cryogenic preservation.
Publisher:
ISBN:
Category : Cryptobia
Languages : en
Pages : 32
Book Description
Studies on two hemoflagellates of fish were carried out to determine biological parameters: host range, vector relations, in vivo culture, in vitro culture, pathogenicit, and cryogenic preservation.
Toxicity of Pesticides to the Crustacean G̲a̲m̲m̲a̲r̲u̲s̲ L̲a̲c̲u̲s̲t̲r̲i̲s̲
Author: Herman O. Sanders
Publisher:
ISBN:
Category : Gammaridae
Languages : en
Pages : 22
Book Description
Static bioassays were conducted to determine the relative acute toxicites of some insecticides, herbicides, fungicides, and a defoliant to the scud Gammarus lacustris.
Publisher:
ISBN:
Category : Gammaridae
Languages : en
Pages : 22
Book Description
Static bioassays were conducted to determine the relative acute toxicites of some insecticides, herbicides, fungicides, and a defoliant to the scud Gammarus lacustris.
Fishery Bulletin
Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 494
Book Description
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 494
Book Description
Commercial Fisheries Review
Author:
Publisher:
ISBN:
Category : Fish trade
Languages : en
Pages : 1562
Book Description
Publisher:
ISBN:
Category : Fish trade
Languages : en
Pages : 1562
Book Description
WRIS Information Bulletin
Author:
Publisher:
ISBN:
Category : Water resources development
Languages : en
Pages : 556
Book Description
Publisher:
ISBN:
Category : Water resources development
Languages : en
Pages : 556
Book Description
Vocational Instructional Materials Available from Federal Agencies
Author: Northwest Regional Educational Laboratory
Publisher:
ISBN:
Category : Vocational education
Languages : en
Pages : 810
Book Description
Publisher:
ISBN:
Category : Vocational education
Languages : en
Pages : 810
Book Description