Biology of the Redtail Surfperch (Amphistichus Rhodoterus) from the Central Oregon Coast PDF Download
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Author: Donald E. Bennett
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 32
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Book Description
Data on certain aspects of the life history of the redtail surfperch were collected along the central coast of Oregon, from April 1967 through April 1969. Annulus formation occured during February through June, usually earlier in young than in older fish. Mating occurred from late December to early January, and the young were born from July through September. The number of embryos per female ranged from 1 to 39 (mean 13.3) and increased linearly with the length and weight of the females. Food of the fish from the surf zone included crustaceans (by far the most important group in both frequency of occurrence and total volume) and (in order of decreasing importance) fishes, mollusks, and polychaetes. Parasites of the redtail surfperch were immature nematodes (Anisakinae) ; the digenetic trematode Genitocotyle acirra; the monogenetic trematode, Diclidophora sp.; and the copepods, Caligus sp., Clavella sp., and Argulus catostomi.
Author: Donald E. Bennett
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 32
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Book Description
Data on certain aspects of the life history of the redtail surfperch were collected along the central coast of Oregon, from April 1967 through April 1969. Annulus formation occured during February through June, usually earlier in young than in older fish. Mating occurred from late December to early January, and the young were born from July through September. The number of embryos per female ranged from 1 to 39 (mean 13.3) and increased linearly with the length and weight of the females. Food of the fish from the surf zone included crustaceans (by far the most important group in both frequency of occurrence and total volume) and (in order of decreasing importance) fishes, mollusks, and polychaetes. Parasites of the redtail surfperch were immature nematodes (Anisakinae) ; the digenetic trematode Genitocotyle acirra; the monogenetic trematode, Diclidophora sp.; and the copepods, Caligus sp., Clavella sp., and Argulus catostomi.
Author: Southwest Fisheries Center (U.S.)
Publisher:
ISBN:
Category : Fisheries
Languages : en
Pages : 828
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Book Description
Author:
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 540
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Book Description
Author:
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 494
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Book Description
Author: R. E. Putz
Publisher:
ISBN:
Category : Cryptobia
Languages : en
Pages : 32
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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.
Author: United States. Bureau of Sport Fisheries and Wildlife
Publisher:
ISBN:
Category : Fish culture
Languages : en
Pages : 736
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Book Description
Author: Florence T. Wright
Publisher:
ISBN:
Category : Atlantic salmon
Languages : en
Pages : 28
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Book Description
North American stocks of Atlantic salmon (Salmo salar) have been declining. One measure being employed to reverse that trend is increased hatchery production. As with husbandry of other animals, intensive rearing is usually associated with higher than normal health risks. Research on diseases of Atlantic salmon can help prevent, reduce, or otherwise control mortality due to problem parasites, infections, and other diseases. For planning of research as well as for diagnostic work, health management, and husbandry, published information on diseases of the Atlantic salmon must be readily available. Inasmuch as the literature is widely scattered, the purpose of this work is to compile a bibliography from international sources on the diseases (detection, diagnosis, identification, and control) of Atlantic salmon. Most of the references are arranged alphabetically by author, either have been annotated by the staff of the Eastern Fish Disease Laboratory, or are abstracts by the author.
Author: John Wilson Parsons
Publisher:
ISBN:
Category : Animal introduction
Languages : en
Pages : 84
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Book Description
This history of the salmon in the Great Lakes describes the decline and extinction of the Atlantic salmon in Lake Ontario in the 1800's; the failure to establish, by salmon culture, permanent or sizable populations of Atlantic or Pacific salmon in any of the Great Lakes in 1867-1965; and the success of plantings of coho and chinook salmon in the Great Lakes, 1966-1970 -- particularly in Lake Michigan.
Author: Charles M. Heartwell
Publisher:
ISBN:
Category : Channel catfish
Languages : en
Pages : 44
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Book Description
Partial antibody characterization indicates that specific channel catfish immunoglobulins are macroglobulins with characteristics like those of most fish immunoglobulins and similar to those of human immunoglobulin-M.
Author: Laurie G. Fowler
Publisher:
ISBN:
Category : Pacific salmon
Languages : en
Pages : 16
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Book Description
Feeding trials using fall chinook salmon finglerlings were conducted at the Salmon Cultural Laboratory, Longview, Washington, during 1971 for the purpose of improving the Abernathy diet formula. The results indicated that cottonseed meal could replace a portion of the fish meal in the diet without reducing fish growth, but similar substitutions of wheat and corn gluten meal reduced growth. Fish growth was significantly increased when a diet containing 50 percent protein and 3,350 kcal per kilogram was fed as compared with a diet containing 45 percent protein and 3,350 kcal per kilogram. Soybean lecithin proved to be equal to soybean oil as a caloric source when fed at 2 percent of the diet. Two types of dried whey product with different levels of lactose content produced similar growth response. Reducing the dried whey portion of the diet to 5 percent did not affect growth, nor did methionine supplementation produce any effects. Anchovy meal was unsuitable as a replacement for herring meal.
