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...
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...
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...
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...
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...
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...
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...
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. ...
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...
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...
Effect of temperature on production of tiger muskellunge in intensive culture
J. W. Meade, W. F. Krise, T. Ort
1983, Aquaculture (32) 157-164
Tiger muskellunge (Esox masquinony × E. lucius) juveniles were reared at constant temperatures in the temperature range 14–28°C. For fish 3–4 cm long, growth, production and feed conversion efficiency were greatest at 20–22°C. Survival was reduced and unaccountable mortality (cannibalism index) was greatest at 24°C. Growth per unit of temperature...
Inbreeding in fish populations used for aquaculture
Harold L. Kincaid
1983, Aquaculture (33) 215-227
The theoretical causes of inbreeding depression are reviewed. Studies to measure depression at a series of inbreeding levels in rainbow trout populations using the method of inbred-outbred half-sib families are discussed. While the actual depression estimates varied widely between populations and inbreeding levels, significant levels of depression were found in...
You asked for it! Proper use of fish culturists and biologists and some thoughts on fall activities
M. Martin
1983, Aquaculture Magazine (10) 38-40
Use of surface water for rearing channel catfish in ponds
Dewey L. Tackett, Ray R. Carter
1983, Progressive Fish-Culturist (45) 179-180
No abstract available....
Effect of population density of lake trout in cylindrical jars on growth and oxygen consumption
H. A. Poston
1983, Progressive Fish-Culturist (45) 8-13
Lake trout (Salvelinus namaycush), initial weight 2.25 g, were reared at population densities of 25, 50, 75, 100, and 125 fish in 6.55‐L cylindrical jars for 20 weeks with a mean water flow of 2.45 L/min. All fish survived the experiment. A significant (P < 0.05) reduction in growth occurred...
[Book review] Microbial Diseases of Fish, edited by R. J. Roberts
S. F. Snieszko
1983, Canadian Journal of Fisheries and Aquatic Sciences (40) 1847-1848
Review of: Microbial Diseases of Fish. Edited by R.J. Roberts, Special Publication No. 9 of the Society for General Microbiology. Academic Press, London. 1982. 305 p. $40.50 (U.S.)....
Design of small, low-cost rearing unit
J. W. Meade, J. T. Fuss
1983, Progressive Fish-Culturist (45) 181-182
No abstract available....
Aquaculture and the U.S. Fish and Wildlife Service: an update
J. P. McCraren
1983, Fish Health Section Newsletter (9) 4-5
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
Size variation of ungraded and graded channel catfish reared in cages
Donald C. Greenland, W.R. Robison, S.H. Newton
1983, Arkansas Academy of Science Proceedings (37) 34-35
Using single board computers for control applications
J. T. Fuss
1983, Fisheries (8) 8-13
No abstract available....
