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: 41778
Blood parasites of wood ducks
Examination of blood films from wood ducks (Aix sponsa) from several northeastern states revealed Haemoproteus, Leucocytozoon, Plasmodium and a typanosome. Haemoproteus occurred in all areas sampled and birds of the year from Massachusetts demonstrated the highest incidence during the last 2 weeks in August. Leucocytozoon was most prevalent in more northern areas. P. circumflexum and a trypanosome
Authors
C. M. Herman, J. O. Knisley, G. D. Knipling
DDE thins eggshells of captive American kestrels
EGGSHELL thinning in several species of raptorial and fish-eating birds, whose populations and/or reproductive success have declined dramatically in recent years, has been correlated with residues of DDE [1,1-dichloro-2,2-bis (p-chlorophenyl) ethylene] in their eggs1–3. DDE, a common metabolite of DDT [1,1,1-trichloro-2,2-bis(p-chlorophenyl) ethane] and a nearly universal contaminant in the food o
Authors
Stanley N. Wiemeyer, Richard D. Porter
Residues of O,P'-DDD and O,P'-DDT in brown pelican eggs and mallard ducks
No abstract available.
Authors
T. G. Lamont, George E. Bagley, W. L. Reichel
Identification of polychlorinated biphenyls in two bald eagles by combined gas-liquid chromatography-mass spectrometry
Polychlorinated biphenyls are widely used industrial compounds marketed in the United States under the trade name Aroclor. They have appeared in fish and wildlife tissues in this country and Europe. They are known to be toxic, but more importantly, their presence in samples along with the commonly occurring organochlorine pesticides complicates the analysis to a serious degree, making identificati
Authors
George E. Bagley, W. L. Reichel, E. Cromartie
Survival and development of lake herring (Coregonus artedii) eggs at various incubation temperatures
Lake herring eggs stripped and fertilized from a local stock were incubated in a constant-flow incubator at constant temperatures ranging from 0 to 12.1° C. Rate of development, percentage survival, percentage of abnormal and normal hatching, and length of fry at hatching were determined. The average incubation time from fertilization to 50% hatch varied from 37 days at 9.9-10.3° C to 236 days at
Authors
Peter J. Colby, L.T. Brooke
Dynamics of MS-222 in the blood and brain of freshwater fishes during anesthesia
Abstract not submitted to date
Authors
J. B. Hunn
Identification of MS-222 residues in selected fish tissues by thin layer chromatography
Abstract not submitted to date
Authors
J. L. Allen, C.W. Luhning, P.D. Harman
A brief history of commercial fishing in Lake Erie
Salient features of the development of the industry from about 1815 to 1968, changes in fishing gears and methods, changes in the kinds and abundance of fishes caught, and the attendant effects of disappearing species on the stability of the fishery are described. The history and present status of the walleye, yellow perch, and eight other fishes, still taken in commercial quantities, are presente
Authors
Vernon C. Applegate, Harry D. Van Meter
Mourning dove recoveries from Mexico
No abstract available.
Authors
Lytle H. Blankenship, Henry M. Reeves
Common marsh plants of the United States and Canada
This is the fourth of a series of publications on field identification of North American marsh and water plants. It describes the emergent and semiemergent plants most likely to be found in inland and coastal marshes. It omits hundreds of uncommon marsh plants and plants less characteristic of marshes than of marsh edges, lake and stream shores, or wet meadows.
The first of the series, "Pondweeds
Authors
Neil Hotchkiss
Comparative histopathology of epizootic salmonid virus diseases
No abstract available
Authors
W. T. Yasutake