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: 41764
An interim report on gill disease
GILL DISEASE among fish, a disease which is characterized by a proliferation of the gill epithelium, has been attributed to a number of different causes. Generally, there are two recognized types: the eastern or bacterial type, in which long filamentous bacteria can always be demonstrated; and the western type, in which, by definition, bacteria cannot be demonstrated.
Authors
R.R. Rucker, H.E. Johnson, G.M. Kaydas
Some factors influencing pigment production to Bacterium salmonicida
No abstract available at this time
Authors
P.J. Griffin
Antibiotic treatment of ulcer disease and furunculosis in trout
No abstract available.
Authors
S. F. Snieszko, P.J. Griffin, S.B. Friddle
Further studies on factors determining tissue levels of sulfamerazine in trout
No abstract available.
Authors
S. F. Snieszko, S.B. Friddle
Ulcer disease in brook trout (Salvelinus fontinalis): Its economic importance, diagnosis, treatment, and prevention
No abstract available.
Authors
S. F. Snieszko
Hybridization of Canada geese with blue geese in the wild
While carrying out hunter bag checks in the vicinity of Sand Lake National Wildlife Refuge, Columbia, South Dakota, during the 1950 waterfowl hunting season, the author examined two adult male geese which proved to be crosses between one of the smaller Canada Geese (possibly Richardson's Goose, Branta canadensis hutchinsi) and the Blue Goose, Chen caerulescens.
Authors
H.K. Nelson
A method of marking larval lampreys
Biological investigations of lamprey populations in central New York have indicated a need for developing a method of marking larvae of the sea lamprey, Petromyzon marinus Linnaeus, and the American brook lamprey, Lampetra lamottei (Lesueur) Since lamprey larvae live in burrows in the soft sediments of the stream bottom, the use of an external tag is impractical.
Authors
Roland L. Wigley
Movements of yellow perch marked in southern Green Bay, Lake Michigan, in 1950
To obtain information on the post-spawning movements of yellow perch that spawn in southern Green Bay, Lake Michigan, 4,172 fish caught in drop nets were marked by tagging with monel-metal strap tags attached to the right operculum and 24,799 were marked by clipping off the second or membranous dorsal fin. Marking was done during the period from May 3 to 17, 1950, at six main stations, all located
Authors
Donald Mraz
Diseases and parasites of the sea lamprey, Petromyzon marinus, in the Lake Huron basin
Sea lampreys from the Lake Huron basin carried no external parasites and showed a fairly low degree of infection by internal parasites. The material examined represented three life-history stages of the sea lamprey. Recently transformed downstream migrants (215 specimens) harbored only nematodes belonging to the genus Camallanus. The percentage of infection was 2.3. Active feeders from the lake (2
Authors
Alberton L. McLain
The study and interpretation of fish scales
Abstract has not been submitted
Authors
James W. Moffett