Publications
This list of publications includes peer-review journal articles, official USGS publications series, reports and more authored by scientists in the Ecosystems Mission Area. A database of all USGS publications, with advanced search features, can be accessed at the USGS Publications Warehouse.
Filter Total Items: 41771
A "virus" disease of chinook salmon
Epizootics among chinook salmon fingerlings at the Coleman National Fish Hatchery have occurred periodically since 1941. A virus or virus-like filterable agent has been demonstrated to be the causative agent of this disease.
Authors
A. J. Ross, R.R. Rucker
Skin lesions on black ducks and mallards caused by chigger (Wormsia strandtmani Wharton 1947)
No abstract available.
Authors
G. M. Clark, Vernon D. Stotts
The life-cycle of the digenetic trematode, Proctoeces maculatus (Looss, 1901) Odhner, 1911 (Syn. P. rubtenuis [Linton, 1907] Hanson, 1950), and description of Cerceria adranocerca n. sp
The genus Proctoeces was erected by Odhner ( 191 1) to contain Distonium maculatuni Looss, 1901, from Labrus merula and Crenilabrus spp. at Triest. Odhner had found the parasite in Blennius ocellaris at Naples. One adult specimen from Chrysophrys bifasciata and two immature specimens from lulis lunaris taken in the Red Sea, were described as a new species, Proctoeces erythraeus. Dawes (1946) liste
Authors
H. W. Stunkard, J. R. Uzmann
Fluctuations in the commercial fisheries of Saginaw Bay, 1885-1956
No abstract available.
Authors
Ralph Hile, Howard J. Buettner
Dry diets for Chinook salmon
The purpose of this paper is to present the results obtained with seven different diets used as starting diets of chinook salmon fry.
Authors
Walter E. Neilson, J. J. Mazuranich
Etiology of sockeye salmon 'virus' disease
Violent epizootics among hatchery reared sockeye salmon fingerlings (Oncorhynchus nerka) caused by a filterable agent have occurred. In 1954, one source of this infectious, filterable agent was found to be adult sockeye viscera used in the diet for the fingerlings. The results of observations on an epizootic in 1958 indicate that the infection may be transmitted to fingerlings from a water supply
Authors
Raymond W. Guenther, S.W. Watson, R.R. Rucker, A. J. Ross
Vibrio infections among marine and fresh-water fish
In 1951. B. J. Earpio found a vibrio infection among salmon fingerlings being reared in saltwater at the Deception Pass Biological Station of the Washington State Department of Fisheries. The disease waa characterized by erythema at the base of fins and on the sides of the fish, necrotic areas in the Inusculature, inflammation of the intestinal tract, and general septicernia. The disease reappeare
Authors
Robert R. Rucker
Mycobacterium fortuitum Cruz from the tropical fish Hyphessobrycon innesi
Mycobacterium fortuitum, a rapid-growing, acid-fast bacillus, isolated from a cold abscess of human origin was described by Cruz (1938). Gordon and Smith (1955), in a taxonomic study embracing a group of acid-fast bacteria capable of relatively rapid growth on ordinary media, classified a number of cultures in their collection as M. fortuitum Cruz. In this group were strains isolated from human be
Authors
A. J. Ross, F.P. Brancato
Mycobacterial infections in adult salmon and steelhead trout returning to the Columbia River Basin and other areas in 1957
The degree of incidence of acid -fast bacillus infections in adult salmonid fishes was determined. The disease was shown to be widely distributed in the area examined. It is believed the primary source of infection is derived from the hatchery practice of feeding infected salmon products to juvenile fish. One group of marked adults that had been hatchery reared for 370 days showed a 62 percent inc