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 possible cause of sunburn in fish
A LESION DESCRIBED AS A GRAY ΡATCH GENERALLY LOCATED ΑΝΤΕRIOR TO THE DORSAL FIN has been associated with high mortality of fish on numerous occasions in production hatcheries throughout the United States. This lesion has been called "sunburn" or "backpeel." No bacteria or other pathogens have been found in fish with these symptoms. For example, at a Montana hatchery in April 1956, mortality of 10
Rapid counting of nematoda in salmon by peptic digestion
The nematode parasite Anisakis sp. can be recovered, relatively unaltered, from chum salmon musculature by high temperature (52°+2°C.) peptic digestion of the flesh. The procedure, which is presented in detail, appears to be more thorough in isolating the parasite than dissection of the flesh and manual isolation of the worms. In addition, the procedure is rapid, comparatively simple, economical,
Authors
Joseph A. Stern, Diptiman Chakravarti, Joseph R. Uzmann, M. N. Hesselholt
Record of the parasitic copepod Lernaea cyprinacea L. in Oregon and Washington fishes
No abstract available.
Authors
J. R. Uzmann, H. J. Rayner
In vitro and in vivo sensitivity testing of a fish-pathogenic Corynebacterium
No abstract available at this time
Authors
K. Wolf, C.E. Dunbar
'Operation recovery'--the Atlantic coastal netting project
No abstract available.
Authors
J. Baird, C.S. Robbins, A.M. Bagg, J.V. Dennis
One new and one previously unreported species of nasal mite (Acarina, Speleognathidae) from N.A. birds
No abstract available.
Authors
G. M. Clark
Bird populations in relation to changes in land use
Changes in breeding-bird populations on a 210-acre farm area were observed from 1947 to 1952. During this period, clearing, drainage, and planting changed the area from a partially abandoned farm with only 34 acres in cultivation to a modem conservation farm. Number of bird species nesting in the area was about 10 per cent lower in the last three years than in the first three years; number of nest
Authors
O. Warbach
The function of the Fish and Wildlife Service in insect control programs
No abstract available.
Authors
J.B. DeWitt
Birds and Dutch elm disease control
Brief, factual review of information on effect of DDT and other insecticides on birds. One program for control of elm disease caused 22% decrease in number of adult birds and 56% mortality of nestlings. Quail fed 3 oz. of DDT per ton of food had 16% reduction in young hatched and 500% increase in defective chicks. Quail fed same dosage during winter and breeding seasons had 30% decrease in fertil
Authors
J.B. DeWitt