Aspergillosis in a red-crowned crane
R. K. Stroud, R. M. Duncan
1983, Journal of the American Veterinary Medical Association (183) 1297-1298
An unusual form of pulmonary aspergillosis in a red-crowned crane (Grus japonensis) is described in this report. The major lesion is unique because it closely resembles a lesion referred to as an aspergilloma. An aspergilloma is a single large granulomatous lesion that resembles a tumor and is caused by fungi...
Inclusion body disease of cranes: A serological follow-up to the 1978 die-off
D. E. Docherty, Renee I. Romaine
1983, Avian Diseases (27) 830-835
A herpesvirus was isolated from captive cranes involved in a 1978 die-off. Neutralizing antibody to this virus was detected in this captive population as early as 1975 and consistently thereafter through 1979. Exposure to the virus evidently occurred at least 2 1/2 years before the die-off, without causing any mortality...
Benefits to trout growers from U.S. Fish and Wildlife Service Research: an overview of recent advances
K. Wolf
1983, Salmonid (6) 6-10, 21
Outbreak of avian cholera on the wintering grounds of the Mississippi Valley Canada goose flock
R. M. Windingstad, R. M. Duncan, D. Thornburg
1983, Journal of Wildlife Diseases (19) 95-97
Avian cholera is reported for the first time in Canada geese, Branta canadensis, of the Mississippi Valley population. The disease was detected in weekly surveillance transects and was responsible to the loss of about 850 geese during the winter of 1978–1979 at localized areas in southern Illinois. Necropsies performed on 480...
Man against volcano : the eruption on Heimaey, Vestmannaeyjar, Iceland
Richard S. Williams Jr., James G. Moore
1983, Report
No abstract available....
The Exclusive Economic Zone: an exciting new frontier
Bonnie A. McGregor, Terry W. Offield
1983, Report
Glaciers: clues to future climate?
Richard S. Williams Jr.
1983, Report
A glacier is a large mass of ice having its genesis on land and represents a multiyear surplus of snowfall over snowmelt. At the present time, perennial ice covers about 10 percent of the land areas of the Earth. Although glaciers are generally thought of as polar entities, they also...
Origins of rainbow smelt in Lake Ontario
Roger A. Bergstedt
1983, Journal of Great Lakes Research (9) 582-583
The first rainbow smelt (Osmerus mordax) to enter Lake Ontario were probably migrants from an anadromous strain introduced into New York's Finger Lakes. Since the upper Great Lakes were originally stocked with a landlocked strain from Green Lake, Maine, subsequent migration to Lake Ontario from Lake Erie makes Lake Ontario...
Migration and winter distributions of canvasbacks staging on the Upper Mississippi River
J.R. Serie, D.L. Trauger, D.E. Sharp
1983, Journal of Wildlife Management (47) 741-753
Fall and winter distribution patterns of canvasbacks (Aythya valisineria) staging on the upper Mississippi River near LaCrosse, Wisconsin (navigational Pools 7 and 8) and Keokuk, Iowa (Pool 19) were studied during 1973-77. Sightings and recoveries obtained from 1,488 color-marked males during 1973-75 and 3,789 banded males and females during 1973-77...
Water quality and the rotifer populations in the Atchafalaya River Basin, Louisiana
L. E. Holland, C.F. Bryan, J.P. Newman Jr.
1983, Hydrobiologia (98) 55-69
We compiled distributional and ecological information on the class Rotifera from both flood controlled and uncontrolled reaches of the Atchafalaya River Basin, a large river-swamp in the south-central United States. In the minimally altered lower basin a variety of aquatic habitats within a small area resulted...
The effect of variable spring water conditions on mallard reproduction
Gary L. Krapu, A.T. Klett, Dennis G. Jorde
1983, The Auk (100) 689-698
Mallard (Anas platyrhynchos) breeding densities in the prairie pothole habitat of eastern North Dakota during 1961-1980 varied from 2.28 birds/km2 in 1977 to 9.47 birds/km2 in 1963 and were correlated with pond abundance (r = 0.543, P < 0.05). The number of basins used by pairs declined with drought, as...
Foraging dives by post-breeding northern pintails
Michael R. Miller
1983, The Wilson Bulletin (95) 294-296
Dabbling ducks (Anatini), including Northern Pintails (Anas acuta), typically feed by “tipping-up” (Bellrose, Ducks, Geese, and Swans of North America, Stackpole Books, Harrisburg, Pennsylvania, 1976) in shallow water. Pintails are not as adapted for diving as members of Aythyini or Oxyurini (Catlett and Johnston, Comp. Biochem. Physiol. 47A:925-931, 1974); however,...
Distribution and abundance of larval fish in the nearshore waters of western Lake Huron
Robert O’Gorman
1983, Journal of Great Lakes Research (9) 14-22
Ichthyoplankton was collected at 17 nearshore (bottom depth ≥5 m but ≤10 m) sites in western Lake Huron during 1973–75 with a 0.5-m net of 351-micron mesh towed at 99 m/min. Larvae of rainbow smelt (Osmerus mordax) dominated late spring and early summer catches and larvae of alewives (Alosa pseudoharengus)...
Avian associations of the northern Great Plains grasslands
H.A. Kantrud, R.L. Kologiski
1983, Journal of Biogeography (10) 331-350
The grassland region of the northern Great Plains was divided into six broad subregions by application of an avian indicator species analysis to data obtained from 582 sample plots censused during the breeding season. Common, ubiquitous species and rare species had little classificatory value and were eliminated from the data...
Seasonal food of juvenile lake trout in U.S. waters of Lake Ontario
Joseph H. Elrod
1983, Journal of Great Lakes Research (9) 396-402
Stomach contents of 3,554 lake trout (Salvelinus namaycush), 100 to 449 mm in total length, captured with bottom trawls during April through October 1978–81 along the south shore of Lake Ontario were examined. Invertebrates appeared to be an important food of lake trout less than 200 mm long but were...
Screening fungicides for use in fish culture: Evaluation of the agar plug transfer, cellophane transfer, and agar dilution methods
Tom A. Bailey
1983, Progressive Fish-Culturist (45) 24-27
The reliability, reproducibility, and usefulness of three screening methods -- the cellophane transfer, the agar plug transfer, and the agar dilution -- to screen aquatic fungicides were evaluated. Achlya flagellata and Saprolegnia hypogyna were exposed to 1, 10, and 100 mg/L of malachite green to test each method. The cellophane...
Ferruginous hawk populations and habitat use in North Dakota
David S. Gilmer, Robert E. Stewart
1983, Journal of Wildlife Management (47) 146-157
Ferruginous hawks (Buteo regalis) were studied in central North Dakota on a 1,259-km2 intensive study block and on a surrounding study area (16,519 km2) from 1977 to 1979. A total of 629 occupied nests was examined. Highest nest densities (0.08 nest/km2) were in the Missouri Coteau in 1979. Few nests...
Water storage capacity of natural wetland depressions in the Devils Lake basin of North Dakota
A.P. Ludden, D.L. Frink, Douglas H. Johnson
1983, Journal of Soil and Water Conservation (38) 45-48
Photogrammetric mapping techniques were used to derive the water storage capacities of natural wetland depressions other than lakes in the Devils Lake Basin of North Dakota. Results from sample quarter-section areas were expanded to the entire basin. Depressions in the Devils Lake Basin have a maximum storage capacity of nearly...
Elevated DDE and toxaphene residues in fishes and birds reflect local contamination in the lower Rio Grande valley Texas USA
Donald H. White, C. A. Mitchell, H.R. Kennedy, A. J. Krynitsky, M. A. Ribick
1983, Southwestern Naturalist (28) 325-334
A potential organochlorine pesticide problem was identified near Mission, Texas, by the National Park Monitoring Program. Fish samples from this site have consistently contained elevated levels of DDE since 1968. Surveys were made in 1976, 1978, and 1979 to determine the extent of organochlorine pesticide contamination in fishes and birds...
Method for in vitro screening of aquatic fungicides
T.A. Bailey
1983, Journal of Fish Diseases (6) 91-100
Methods were developed for in vitro screening of candidate aquatic fungicides for efficacy against Achlya flagellata, A. racemosa, Saprolegnia hypogyna and S. megasperma. Agar plugs containing fungal hyphae, removed from the edge of actively growing colonies, were placed in the depressions of spot plates containing 1.0, 10.0 and 100 mg/l...
Selective control of common carp: Ineffectiveness of 2-(digeranylamino)-ethanol (GD-174) in pond trials
P.A. Gilderhus, R.M. Burress
1983, North American Journal of Fisheries Management (3) 61-66
The candidate piscicide, 2‐(digeranylamino)‐ethanol, (commonly known as GD‐174) was subjected to efficacy trials in ponds under a wide variety of conditions. Results of the trials were disappointing considering that laboratory tests had shown the compound to be selectively toxic to common carp (Cyprinus carpio). Results of pretreatment, on‐site toxicity tests...
Afternoon closure of hunting and recovery rates of mallards banded in Minnesota
Ronald E. Kirby, James E. Hines, James D. Nichols
1983, Journal of Wildlife Management (47) 209-213
No abstract available. ...
Species decline: A perspective on extinction, recovery, and propagation
J. W. Carpenter
1983, Zoo Biology (2) 165-178
This keynote address was presented at the Conference on the Conservation of Endangered Species in Zoological Parks and Aquariums on April 18, 1982 at the National Aquarium in Baltimore. It outlines 1) future trends in the world's environment, resources, and population; 2) factors affecting species decline; 3) reasons for preserving life forms;...
Preliminary report on exclusion fencing used in combination with lethal control for managing upland waterfowl nesting habitat
R. J. Greenwood, P.M. Arnold, B.G. McGuire
1983, Report, Management of public lands in the Northern Great Plains.
Environmental factors that influence prescribed burning in the Northern Plains
A.D. Kruse, K.F. Higgins, J.L. Piehl
1983, Book chapter, Management of public lands in the Northern Great Plains
Several environmental conditions were recorded and analyzed for 192 prescribed burns in the Northern Great Plains. The purpose of these burns was to improve wildlife habitat and manipulate native prairie vegetation. All of the fires occurred in grassland and shrubsteppe vegetation types. Fuels were predominantly grasses and forbs intermixed with...
