Growth and survival of newly parasitic sea lampreys at representative winter temperatures
William D. Swink
1995, Transactions of the American Fisheries Society (124) 380-386
Larval sea lampreys Petromyzon marinus begin to metamorphose into their parasitic phase in July and migrate to the Great Lakes either in autumn, when they immediately feed on fish, or in spring after overwintering in the stream substrate. Survival and growth of newly parasitic autumn migrants (mean weight, 4.18 g) differed significantly...
Estimating shallow subsidence in microtidal salt marshes of the southeastern United States: Kaye and Barghoorn revisited
Donald R. Cahoon, D.J. Reed, J.W. Day Jr.
1995, Marine Geology (128) 1-9
Simultaneous measurements of vertical accretion and change in surface elevation relative to a shallow (3-5 m) subsurface datum were made in selected coastal salt marshes of Louisiana, Florida, and North Carolina to quantitatively test Kaye and Barghoorn's contention that vertical accretion is not a good surrogate for surface elevation change...
Influence of fluoride on aluminum toxicity to Atlantic salmon (Salmo salar)
Steven J. Hamilton, Terry A. Haines
1995, Canadian Journal of Fisheries and Aquatic Sciences (52) 2432-2444
Atlantic salmon (Salmo salar) alevins were exposed to various aluminum (0–4700 μg/L) and four fluoride (0–500 μg/L) concentrations at two pH values (5.5 and 6.5) for 4- and 30-d periods. In the 4-d tests, aluminum with fluoride was less toxic at pH 6.5 than at pH 5.5, whereas without fluoride, pH had...
Seasonal predator removal relative to hatch rate of duck nests in waterfowl production areas
A.B. Sargeant, M.A. Sovada, T.L. Shaffer
1995, Wildlife Society Bulletin (23) 507-513
These authors report that hatch rates of duck nests were related to removal of predators from waterfowl production areas. Cost effectiveness of such efforts is questioned. The prairie pothole region (PPR) is the primary breeding ground of several species of North American ducks (Bellrose 1980). Much habitat of breeding ducks...
Modified transmitter attachment method for adult ducks
P.J. Pietz, D.A. Brandt, Gary L. Krapu, D. A. Buhl
1995, Journal of Field Ornithology (66) 408-417
The value of radio telemetry for waterfowl research depends on the availability of suitable methods of attaching transmitters. In previous studies, external transmitters attached to adult Mallards (Anas platyrhynchos) with sutures and glue did not stay on birds reliably. In an attempt to improve transmitter retention, a method of attachment...
Foraging patterns of California sea otters as indicated by telemetry
Katherine Ralls, Brian B. Hatfield, Donald B. Siniff
1995, Canadian Journal of Zoology (73) 523-531
Foraging behavior was studied in 38 sea otters (Enhydra lutris) implanted with radio transmitters. The observed foraging behavior of instrumented individuals was similar to that of uninstrumented otters observed in previous studies: dive duration varied with prey type but not with prey size, dive success was highest for small prey,...
Chronic bioassays of rainbow trout fry with compounds representative of contaminants in Great Lakes fish
Dora R. Passino-Reader, William H. Berlin, James P. Hickey
1995, Journal of Great Lakes Research (21) 373-383
To evaluate the hazard of organic compounds detected in Great Lakes fish by gas chromatography/mass spectrometry, we tested compounds representative of heterocyclic nitrogen compounds, polycyclic aromatic hydrocarbons, and cyclic alkanes and alkenes. Sixty-day bioassays on the effects of nicotine, phenanthrene, pinane, and pinene on the behavior, growth, and survival of...
Age-at-maturity estimates for Atlantic coast female striped bass
David L. Berlinsky, Mary C. Fabrizio, John F. O'Brien, Jennifer L. Specker
1995, Transactions of the American Fisheries Society (124) 207-215
This study was undertaken to estimate the percentage of mature female striped bass Morone saxatilis present in each age-class during annual coastal feeding migration. Migratory striped bass (N = 302) were sampled in coastal Rhode Island waters during spring (May-June) and fall (September-November) from 1985 to 1987. Stocks...
Assessment of water quality in the upper Pine Creek, Pennsylvania watershed following a sewage plant upgrade
K.A. Meyer, D. V. Rottiers
1995, Journal of the Pennsylvania Academy of Science (69) 93-99
Waterfowl diseases: Causes, prevention, and control
Milton Friend, D.H. Cross
1995, Report, Waterfowl Management Handbook
Preventing and controlling disease in waterfowl is a difficult job. Few tools are available to deal with disease in highly mobile, unconfined animal populations, and few managers are trained and experienced in the prevention and control of avian diseases. Furthermore, the geographic distribution, frequency of occurrence, magnitude of losses, and...
Competitive relations between Douglas-fir and Pacific madrone on shallow soils in a Mediterranean climate
Zheng Q. Wang, M. Newton, J. C. Tappeiner II
1995, Forest Science (41) 744-757
A large area of Pacific Coast forests is characterized by shallow soil, with negligible rainfall in the growing season. This study explores water-seeking strategy on such a site. We studied availability of bedrock water and its effects on growth and ecophysiology of 11-yr-old planted Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) and...
Factors associated with duck nest success in the prairie pothole region of Canada
Raymond J. Greenwood, Alan B. Sargeant, Douglas H. Johnson, Lewis M. Cowardin, Terry L. Shaffer
1995, Wildlife Monographs (128) 3-57
Populations of some dabbling ducks have declined sharply in recent decades and information is needed to understand reasons for this. During 1982-85, we studied duck nesting for 1-4 years in 17 1.6 by 16.0-km, high-density duck areas in the Prairie Pothole Region (PPR) of Canada, 9 in parkland and 8...
Partial replacement of fish meal with spray-dried blood powder to reduce phosphorus concentrations in diets for juvenile rainbow trout, Oncorhynchus mykiss (Walbaum)
J. M. Luzier, R.C. Summerfelt, H. G. Ketola
1995, Aquaculture Research (26) 577-587
Feeds formulated with 5.7, 11.4 and 22.7% spray-dried blood powder, also called blood flour (88.1% protein, 0.2% total phosphorus), were compared with a control diet with 49% herring meal (64% protein, 2.1% total phosphorus) and no blood powder for rearing juvenile rainbow trout. Oncorhynchus my kiss (Walbaum). Diets with 5.7, 11.4 and...
Effects of climate on numbers of northern prairie wetlands
Diane L. Larson
1995, Climatic Change (30) 169-180
The amount of water held in individual wetland basins depends not only on local climate patterns but also on groundwater flow regime, soil permeability, and basin size. Most wetland basins in the northern prairies hold water in some years and are dry in others. To assess the potential effect of...
Growth and mortaility rates of larval American shad, Alosa sapidissima, at different salinities
K.E. Limburg, R. M. Ross
1995, Estuaries (18) 335-340
The tolerance of post yolk-sac American shad Alosa sapidissima larvae to salinities typically seen in estuaries was assessed experimentally. Sixteen-day-old Hudson River (experiment I) and 35-d-old Delaware River (experiment II) larvae were held for 8 d and 9 d respectively in low (0–1‰), medium (9–11‰), and highly (19–20‰) brackish water, and mortality...
Circulating growth hormone, cortisol and thyroxine levels after 24 h seawater challenge of yearling coho salmon at different developmental stages
G. Young, Stephen D. McCormick, Bjorn Thrandur Bjornsson, H. A. Bern
1995, Aquaculture (136) 371-384
The response of the endocrine system to short-term exposure to sea water (SW) was examined before, during and after the parr-smolt transformation of coho salmon. Five transfers of yearling coho salmon (Oncorhynchus kisutch) from fresh water (FW) to FW, or from FW to SW for 24 h were carried out...
Perch mercury content is related to acidity and color of 26 Russian Lakes
T.A. Haines, V.T. Komov, V.E. Matey, C. H. Jagoe
1995, Water, Air, & Soil Pollution (85) 823-828
Effects of handling and aerial exposure on the survival of unionid mussels
D. L. Waller, J.J. Rach, W.G. Cope, G.A. Miller
1995, Journal of Freshwater Ecology (10) 199-208
We conducted a relocation study of unionid mussels in Navigation Pool 7 of the upper Mississippi River (river mile 713.2) to evaluate survival after handling and aerial exposure. Two separate studies were conducted to compare seasonal differences in mussel survival; the first was initiated in June and the...
GIS for mapping waterfowl density and distribution from aerial surveys
W.I. Butler, R.A. Stehn, G.R. Balogh
1995, Wildlife Society Bulletin (23) 140-147
We modified standard aerial survey data collection to obtain the geographic location for each waterfowl observation on surveys in Alaska during 1987-1993. Using transect navigation with CPS (global positioning system), data recording on continuously running tapes, and a computer data input program, we located observations with an average deviation along...
Locating waterfowl observations on aerial surveys
W.I. Butler, J.I. Hodges, R.A. Stehn
1995, Wildlife Society Bulletin (23) 148-154
We modified standard aerial survey data collection to obtain the geographic location for each waterfowl observation on surveys in Alaska during 1987-1993. Using transect navigation with CPS (global positioning system), data recording on continuously running tapes, and a computer data input program, we located observations with an average deviation along...
Automated counting of waterfowl with image processing
D.J. Cunningham, W.H. Anderson, R.M. Anthony
1995, Wildlife Society Bulletin (23) 345-346
Diet study of Atlantic sturgeon in marine waters
J. Johnson, D. Dropkin
1995, Conference Paper, Sturgeon Notes
No abstract available at this time...
Studying snow geese and avian cholera
G. Mensik, M.D. Samuel
1995, California Waterfowl 16-16
Some tests of the "migration hypothesis" for anadromous Dolly Varden (southern form)
David R. Bernard, Kelley R. Hepler, J. Douglas Jones, Mary E. Whalen, Douglas N. McBride
1995, Transactions of the American Fisheries Society (124) 297-307
Some aspects of a previously described migratory paradigm for the southern form of anadromous Dolly Varden Salvelinus malma were investigated with seven 3‐year mark–recapture experiments on fish that used lakes in eight watersheds as their winter residence. Weirs on Kodiak Island, around Prince William Sound, and near Juneau, Alaska, were used to...
Evaluation of an extendable pole-net to collect heron eggs in the canopy of tall trees
R. K. Hines, T. W. Custer
1995, Colonial Waterbirds (18) 120-122
A pole, extendable from 2 to 8 m, with a nylon-mesh collecting net, was used to retrieve eggs from nests of Great Blue Herons (Ardea herodias) in the canopy of floodplain forests. A total of 200 eggs was collected for contaminant analysis from ten colonies along the upper...
