Effect of Fishway Slope on Rate of Passage of Salmonids PDF Download
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Author: Joseph R. Gauley
Publisher:
ISBN:
Category : Fish habitat improvement
Languages : en
Pages : 32
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Book Description
This study on the effect of fishway slope on rate of passage of salmonids was made by comparing passage time of fish in two fishways with different slopes. It is based mainly on steelhead (Salmo gairdneri) but includes some chinook (Oncorhynchus tshawytscha) and silver (Oncorhynchus kisutch) salmon. Both fishways were pool-and-overfall type in which 6 feet of elevation was gained. Passage of steelhead in the 1:8-slope fishway was in general, as fast as or faster than in the 1:16-slope fishway. In the 1:8-slope fishway, the passage time appeared to increase with an increase in rise between pools. In the 1:16-slope fishway, the passage time of steelhead increased as the season progressed.
Author: Joseph R. Gauley
Publisher:
ISBN:
Category : Fish habitat improvement
Languages : en
Pages : 32
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Book Description
This study on the effect of fishway slope on rate of passage of salmonids was made by comparing passage time of fish in two fishways with different slopes. It is based mainly on steelhead (Salmo gairdneri) but includes some chinook (Oncorhynchus tshawytscha) and silver (Oncorhynchus kisutch) salmon. Both fishways were pool-and-overfall type in which 6 feet of elevation was gained. Passage of steelhead in the 1:8-slope fishway was in general, as fast as or faster than in the 1:16-slope fishway. In the 1:8-slope fishway, the passage time appeared to increase with an increase in rise between pools. In the 1:16-slope fishway, the passage time of steelhead increased as the season progressed.
Author: Joseph R. Gauley
Publisher:
ISBN:
Category : Fish habitat improvement
Languages : en
Pages : 23
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Author:
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 20
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Author: Stanislas F. Snieszko
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 1104
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Abstract: The micro method of hematocrit is rapidly replacing red cell counts in clinical hematology. Observations were made on the value of this method in routine hematological examination of trouts. Under the conditions of data collection, the normal hematocrit values for brook trout were 45 to 50, for brown trout 39 to 44, and for rainbow trout 45 to 53. There was a close correlation between the hematocrits, red cell counts and hemoglobin. The commercial heparinized capillaries, while excellent for human blood, tend to give somewhat higher readings (7 to 18 percent) with trout, due to incomplete prevention of blood coagulation. The procedure as applied to trout is described in detail.
Author: Clark S. Thompson
Publisher:
ISBN:
Category : Fishways
Languages : en
Pages : 28
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Author:
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ISBN:
Category : Fish culture
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 696
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Author: Gerald B. Collins
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 24
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Author: Johnny A. Butler
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 624
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Author:
Publisher:
ISBN:
Category : Animals
Languages : en
Pages : 412
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