Various fish species as biological control agents for the dark rice field mosquito in Arkansas rice fields
R. B. Davey, M. V. Meisch, D. L. Gray, J. M. Martin, Kermit E. Sneed, F. J. Williams
1974, Environmental Entomology (3) 823-826
During the summers of 1972–73, 10 fish species were evaluated as predators against larvae of the dark rice field mosquito, Psorophora confinnis (Lynch-Arribalzaga), near Stuttgart, Ark. Stocking rates were 0.02, 0.03, and 0.06 fish/ft 2 . At the lowest stocking rate green sunfish, Lepomis cyanellus Rafinesque, reduced larval numbers by 89.7% and were significantly more effective...
Effects of stocking density and water exchange rate on growth and survival of channel catfish Ictalurus punctatus (Rafinesque) in circular tanks
Kenneth O. Allen
1974, Aquaculture (4) 29-39
Channel catfish were cultured for 177 days in circular tanks containing 1.6 m3 of water at combinations of five stocking densities (90–720 fish/m3) and five water exchange rates (2.0–0.5 h per exchange). Net yield increased as stocking density increased up to 540 fish/m3 then declined at higher densities. Mean fish weight, feed...
Infectious hematopoietic necrosis (IHN) virus disease
D.F. Amend
1974, Fish Disease Leaflet 39
No abstract available at this time...
Parasites of freshwater fishes; II Protozoa 3 Ichtyophthirius multifiliis (Revised)
F. P. Meyer
1974, Fish Disease Leaflet 2
Abstract not submitted to date...
Analysis of unworked bones
C. L. Douglas, Matthew Whitman
1974, Excavation of main pueblo at Fitzmaurice Ruin SP-10
No abstract available at this time...
Analysis of worked bones
C. L. Douglas, Matthew Whitman
1974, Excavation of main pueblo at Fitzmaurice Ruin SP-10
No abstract available at this time...
A simple method for cleaning and re-sterilizing disposable serological pipettes
K. Wolf, G. L. Bullock, M. C. Quimby
1974, Journal of Applied Bacteriology (37) 447-450
No abstract available....
Observations on the jumping and escapement of white amur
James E. Ellis
1974, Progressive Fish-Culturist (36) 15-15
No abstract available. ...
The role of lava erosion in the formation of lunar rilles and Martian channels
M. H. Carr
1974, Icarus (22) 1-23
Lava tubes and channels develop around active sources of low viscosity lava. The channels normally form without erosion; however, sustained flow can result in the incision of a lava channel and simulation of fluvial erosion features. Lava erosion by means of thermal incision...
A synthesis of 1,2,3,4-tetrafluorobenzene by KF fluorination
G. C. Finger, R.H. Shiley, D. R. Dickerson
1974, Journal of Fluorine Chemistry (4) 111-113
[No abstract available]...
Kaolinite synthesis at 25°C
J.D. Hem, Carol J. Lind
1974, Science (184) 1171-1173
The addition of quercetin, an organic flavone (C15H10O7), to aqueous solutions containing silica and aluminum and adjusted to final pH's from 6.5 to 8.5 produced a 1 : 1 alumninosilicate precipitate which, after 6 to 16 months of aging in solution at 25°C, contained as much as 5 percent well-formed kaolinite plates....
Raceway production: four costs that can make or break you
K.O. Allen
1974, Fish Farming Industries (5) 23-25
Immature insects (Plecoptera, Trichoptera, and Ephemeroptera) collected from deep water in western Lake Superior
James H. Selgeby
1974, Journal of the Fisheries Research Board of Canada (31) 109-111
Five species of aquatic insects - two plecopterans, two trichopterans, and one ephemeropteran - usually found in streams or ponds were collected in water 32-100 m deep in western Lake Superior. All appear to be new records for the lake and all were collected from far greater depths than previously...
Whirling disease research - a delineation of needs
K. Wolf
1974, Fish Health News (3) 20-27
Nitrogen and phosphorus balance of grass carp, Ctenopharyngodon idella, fed elodea, Egeria denea
J.G. Stanley
1974, Transactions of the American Fisheries Society (103) 587-592
The herbivorous grass carp fed winter elodea exhibited a negative nitrogen balance in metabolism, suggesting that food having a higher protein content would be required for normal growth. About a third of the phosphorus contained in food was retained; hence, a combination of aquatic plants and grass carp might afford...
The sea lamprey and its control
R. Saalfeld, J.H. Howell
1974, Book chapter, Michigan Fisheries Centennial Report, 1873-1973, No. 6
Abstract not submitted to date...
Preliminary map showing availability of ground water from major glacial-drift aquifers in Griggs and Steele Counties, North Dakota
Joe S. Downey
1974, Open-File Report 74-1023
This investigation is part of a statewide program to determine the location, extent, and hydrologic characteristics of the ground-water reservoirs (aquifers).The investigation was made cooperatively by the U.S. Geological Survey, North Dakota State Water Commission, North Dakota Geological Survey, and Griggs and Steele Counties Water Management Districts.This preliminary map is...
Episodic Cenozoic volcanism and tectonism in the Andes of Peru
D. C. Noble, E.H. McKee, E. Farrar, U. Petersen
1974, Earth and Planetary Science Letters (21) 213-220
Radiometric and geologic information indicate a complex history of Cenozoic volcanism and tectonism in the central Andes. K-Ar ages on silicic pyroclastic rocks demonstrate major volcanic activity in central and southern Peru, northern Chile, and adjacent areas during the Early and Middle...
Osmium, ruthenium, iridium and uranium in silicates and chromite from the eastern Bushveld Complex, South Africa
R.h. Gijbels, Hugh T. Millard Jr., G. A. Desborough, A.J. Bartel
1974, Geochimica et Cosmochimica Acta (38) 319-337
Osmium, ruthenium, iridium and uranium contents were determined in eight ortho pyroxene, seven plagioclase, and three chromite mineral separates from the eastern Bushveld Complex. Neutron activation analysis was used to measure the platinum metals, and uranium was determined by a fission track technique....
Comparative studies on extraction of sediment interstitial waters: Discussion and comment on the current state of interstitial water studies
F.T. Manheim
1974, Clays and Clay Minerals (22) 337-343
The implication by Murthy and Ferrell (1972)that interstitial water studies are in a confused state is criticized on the basis that the authors have not drawn on a considerable body of data, especially Soviet studies since the 1950's, and results of the Deep Sea Drilling Project. Pressure filtration systems for...
Potential mineral reserves
V.E. McKelvey
1974, Resources Policy (1) 75-81
No abstract available....
A solvent extraction study of molybdenum chloride and molybdenum thiocyanate complexes
L. P. Greenland, E.G. Lillie
1974, Analytica Chimica Acta (69) 335-346
The effect of reducing agents on molybdenum(VI) solutions in hydrochloric acid was studied by a solvent extraction technique to elucidate the composition of the colored molybdenum thiocyanate complex. Neither copper(I) chloride nor ascorbic acid have any effect on the extraction of MoO2Cl2; it is inferred...
Water quality effects of seepage from earthen dams
C. Yost Jr., J.W. Naney
1974, Journal of Hydrology (21) 15-26
Analyses of surface and seepage waters from selected floodwater retarding structures in west-central Oklahoma, U.S.A. show the salinity of seepage to be several times greater than that of the impounded waters. The increases in concentration of the several chemical components are not proportional....
Migration and redistribution of zinc and cadmium in marine estuarine system
Charles W. Holmes, Elizabeth A. Slade, C.J. McLerran
1974, Environmental Science & Technology (8) 255-259
A survey of trace-element levels in the estuarine sediments of Texas shows that Corpus Christi Bay has anomalously high concentrations of zinc and cadmium. Maps of elemental abundance within the bay indicate large concentration gradients, the highest values being near the harbor entrance. Seasonal determinations of metal levels in the...
U-Th-Pb and Rb-Sr systematics of Apollo 17 boulder 7 from the North Massif of the Taurus-Littrow Valley
P.D. Nunes, M. Tatsumoto, D.M. Unruh
1974, Earth and Planetary Science Letters (23) 445-452
Portions of highland breccia boulder 7 collected during the Apollo 17 mission were studied using UThPb and RbSr systematics. A RbSr internal isochron age of3.89 ± 0.08b.y. with an initial87Sr/86Sr of0.69926 ± 0.00008 was obtained for...
