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Page 6800, results 169976 - 170000

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A statistical analysis of the distribution of a larval nematode (Anisakis sp.) in the musculature of chum salmon (Oncorhynchus keta - Walbaum)
A.J. Novotny
1960, Experimental Parasitology (10) 60-67
The pepsin-HCl digestion technique is probably the best method of isolating Anisakislarvae from the musculature of chum salmon. Some losses can be expected due to breakage of the resistant cuticle of Anisakis, and can be estimated to be about 6% when counting the parasites with the unaided eye. Comparisons of Anisakis infections of the dorsal...
A bacterial disease of yellow perch (Peres flavescens)
A. J. Ross, P.R. Nordstrom, J.E. Bailey, J.H. Heaton
1960, Transactions of the American Fisheries Society (89) 310-312
On May 26, 1959, two of the authors' investigated a fish kill at Dailey Lake, Park County, Montana. They observed about a half-dozen live, weakly swimming yellow perch (Perca flavescens), in addition to thousand of dead perch along the shoreline. It was learned from local residents that mortalities had begun...
Chemical and histological studies of wild and hatchery salmon in fresh water
E. M. Wood, W. T. Yasutake, J.E. Halver, A.N. Woodall
1960, Transactions of the American Fisheries Society (89) 301-307
In a study of coho salmon (Oncorhynchus kisutch), the gross chemical and histological changes occurring over a 14-month period spent in fresh water were determined. The determinations were made at 3-month intervals on: 1) hatchery-reared fish, 2) fish hatchery-reared for 3, 6, 9, and 12 months and then planted in...
Ovarian fluid: Its role in fertilization
R.R. Rucker, J.F. Conrad, C.W. Dick
1960, Progressive Fish-Culturist (22) 77-78
FISH-CULTURISTs, in general, do not agree as to the time of actual fertilization of artificially spawned salmonid eggs. Some fish-culturists believe that the eggs are fertilized in the milt before water is added, while others are equally certain that fertilization is not achieved until after water is added. This difference...
A Virus-like disease of chinook salmon
A. J. Ross, J. Pelnar, R.R. Rucker
1960, Transactions of the American Fisheries Society (89) 160-163
Consideration is given to a recurring disease of early feeding chinook salmon fingerlings at the Coleman, California, Federal Fish Cultural Station. The infection becomes manifest in the early spring months at low water temperatures and abates as the water temperature rises. Bacteriological studies have failed to yield the presence...