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
Sea lamprey control on the Great Lakes 1953 and 1954
No abstract available.
Authors
Leo F. Erkkila, Bernard R. Smith, Alberton L. McLain
Biology of the sea lamprey in its parasitic phase
The investigations conducted on sea lampreys in aquariums were concerned with the duration of the parasitic phase of life, feeding, growth, and the interrelations between predator and host fish. Observations on lampreys reared from metamorphosis to maturity were made at the Fish and Wildlife Service Laboratory at Hammond Bay, Michigan. Most of the experimental lampreys were mature and ripe after
Authors
Phillip S. Parker, Robert E. Lennon
Histopathology of fish. IV. A granuloma of brook trout
In the summer of 1952, Snieszko and Griffin (1955) diagnosed kidney disease in brook trout from the Fish and Wildlife Service's station at Berlin, New Hampshire. During the examination of these fish, a peculiar lesion was observed in the vicinity of the gastric caeca. In very advanced cases, hard, glistening, white masses of tissue bearing a striking resemblance to mature testes often filled the a
Authors
E. M. Wood, W. T. Yasutake
Fifty-sixth Christmas Bird Count. 147. Southern Dorchester County, Md
Summary and Recommendations: We suggest that managers are approaching the limits of their ability to improve waterfowl harvest management, primarily because the information needed to make better decisions is being sacrificed by the current approach to setting regulations. We propose an actively adaptive management strategy in which regulatory decisions play a dominant role in reducing uncertaint
Authors
F.A. Johnson, B.K. Williams, J. D. Nichols, J. E. Hines, W. L. Kendall, G.W. Smith, David F. Caithamer
Chronic toxicity to quail and pheasants of some chlorinated insecticides
Quantitative report of tests. 'Inclusion of 1 p.p.m, of aldrin, dieldrin, or endrin in diets fed growing quail resulted in high mortality rates, but the birds survived on diets containing 100 p.p.m, of DDT or 50 p.p.m. of strobane. Young pheasants survived on diets containing 50 p.p.m, of DDT or strobane, but failed to survive on diets containing 5 p.p.m, of aldrin, dieldrin, or endrin. No ill e
Authors
J.B. DeWitt
Toxicity of chlorinated insecticides to quail and pheasants
'Residues from insecticidal applications of chlorinated hydrocarbons may remain toxic for extended periods. In experiments designed to furnish information on the effects upon quail and pheasants of prolonged feeding upon diets containing small percentages of these compounds, it was shown that aldrin, dieldrin and endrin are cumulative, and that quail are unable to survive after ingesting 5-10 mg./
Authors
J.B. DeWitt
Studies on mosquito breeding in natural and impounded coastal salt marshes in Delaware during 1955
No abstract available.
Authors
P. F. Springer, R.F. Darsie
Some uses of mark sensing in collecting game management data in the field
No abstract available.
Authors
S. Overton, J.L. Sincock