U-series ages of solitary corals from the California coast by mass spectrometry
Martin Stein, G.J. Wasserburg, K. R. Lajoie, J.-H. Chen
1991, Geochimica et Cosmochimica Acta (55) 3709-3722
The purpose of this study is to evaluate the feasibility of dating fossil solitary corals from Pleistocene marine strandlines outside tropical latitudes using the recently developed high sensitivity, high-precision U-series technique based on thermal-ionization mass-spectrometry (TIMS). The TIMS technique is much more efficient than conventional a spectrometry and, as a...
Mitochondrial and nuclear genetic relationships of deer (Odocoileus spp.) in western North America
Matthew A. Cronin
1991, Canadian Journal of Zoology (69) 1270-1279
Odocoileus hemionus (mule deer and black-tailed deer) and Odocoileus virginanus (white-tailed deer) are sympatric in western North America and are characterized by distinct morphology, behavior, and allozyme allele frequencies. However, there is discordance among nuclear and mitochondrial genetic relationships, as mule deer (O. h. hemionus) and white-tailed deer have similar...
An aem-tem study of weathering and diagenesis, Abert Lake, Oregon: I. Weathering reactions in the volcanics
J.F. Banfield, B.F. Jones, D.R. Veblen
1991, Geochimica et Cosmochimica Acta (55) 2781-2793
Abert Lake in south-central Oregon provides a site suitable for the study of sequential weathering and diagenetic events. In this first of two papers, transmission electron microscopy was used to characterize the igneous mineralogy, subsolidus alteration assemblage, and the structural and chemical aspects of silicate weathering reactions that occur in...
The role of the diagnostic laboratory in fish disease control
Douglas P. Anderson, P. J. Barney
1991, Annual Review of Fish Diseases (1) 41-62
The diagnostic laboratory is becoming increasingly important to the productivity and profitability of hatcheries, fish farms, and aquaculture stations. The basic function of the laboratory personnel is to isolate and identify viral, bacterial, protozoan, and other fish pathogens present in cultured and feral fish stocks. New, rapid and accurate methods...
Inter- and intraspecific mitochondrial DNA variation in North American bears (Ursus)
Matthew A. Cronin, Steven C. Amstrup, Gerald W. Garner, Ernest R. Vyse
1991, Canadian Journal of Zoology (69) 2985-2992
We assessed mitochondrial DNA variation in North American black bears (Ursus americanus), brown bears (Ursus arctos), and polar bears (Ursus maritimus). Divergent mitochondrial DNA haplotypes (0.05 base substitutions per nucleotide) were identified in populations of black bears from Montana and Oregon. In contrast, very similar haplotypes occur in black bears...
Choline requirement of swim-up rainbow trout fry
H. A. Poston
1991, Progressive Fish-Culturist (53) 220-223
Triplicate 150‐fish lots of first‐feeding fry of rainbow trout (Oncorhynchus mykiss; initial mean weight, 0. 12 g) were fed casein–gelatin‐based diets containing 0, 200, 400, 800, 1,000, 2,000, 4,000, or 8,000 mg choline/kg of feed for 12 weeks to determine their need for dietary choline. Although the growth rates of...
Benzocaine as an anesthetic for striped bass
P.A. Gilderhus, C. A. Lemm, I.L.C. Woods III
1991, Progressive Fish-Culturist (53) 105-107
Benzocaine was tested as an anesthetic on juvenile and mature adult striped bass (Morone saxatilis). Concentrations of 55 mg/L at 22°C to 80 mg/L at 11°C effectively anesthetized fish in about 3 min. Recovery was more rapid as temperature increased. Fish survived concentrations of twice the effective concentration and exposure...
An intergeneric hybrid of a native minnow, the golden shiner, and an exotic minnow, the rudd
N.M. Burkhead, J.D. Williams
1991, Transactions of the American Fisheries Society (120) 781-795
The hybrid golden shiner Notemigonus crysoleucas × rudd Scardinius erythrophthalmus is the first known nonsalmonid, intergeneric hybrid of an exotic species and a North American native species. The cross is also the first valid record of a viable hybrid involving the native golden shiner. Meristic and mensural characters of 30 artificially produced hybrids of...
Late Quaternary faulting along the Death Valley-Furnace Creek fault system, California and Nevada
George E. Brogan, Karl S. Kellogg, D. Burton Slemmons, Christina L. Terhune
1991, Bulletin 1991
The Death Valley-Furnace Creek fault system, in California and Nevada, has a variety of impressive late Quaternary neotectonic features that record a long history of recurrent earthquake-induced faulting. Although no neotectonic features of unequivocal historical age are known, paleoseismic features from multiple late Quaternary events of surface faulting are well...
The impact of debris on the Florida manatee
C.A. Beck, N.B. Barros
1991, Marine Pollution Bulletin (22) 508-510
The endangered Florida manatee ingests debris while feeding. From 1978 through 1986, 439 salvaged manatees were examined. Debris was in the gastrointestinal tract of 63 (14.4%) and four died as a direct result of debris ingestion. Monofilament fishing line was the most common debris found (N=49). Plastic bags, string, twine,...
The status of the Red Hills salamander Phaeognathus hubrichti, Alabama, USA, 1976–1988
C.K. Dodd Jr.
1991, Biological Conservation (55) 57-75
A total of 144 sites in the Red Hills Physiographic Province in south-central Alabama, USA, were surveyed in 1988 for burrows of the Red Hills salamander Phaeognathus hubrichti. Of 92 sites surveyed in 1976, no change occurred in the habitat at 54 sites, conditions improved at 19 sites and deteriorated at...
Evaluation of a mark-recapture method for estimating mortality and migration rates of stratified populations
R.M. Dorazio, P.J. Rago
1991, Canadian Journal of Fisheries and Aquatic Sciences (48) 254-260
We simulated mark–recapture experiments to evaluate a method for estimating fishing mortality and migration rates of populations stratified at release and recovery. When fish released in two or more strata were recovered from different recapture strata in nearly the same proportions, conditional recapture probabilities were estimated outside the [0, 1]...
Late quaternary geologic framework, north-central Gulf of Mexico
Jack L. Kindinger, Shea Penland, S. Jeffress Williams, Gregg R. Brooks, John R. Suter, Randolph A. McBride
1991, Conference Paper, Coastal Sediments '91
The geologic framework of the north-central Gulf of Mexico shelf is composed of multiple, stacked, delta systems. Shelf and nearshore sedimentary facies were deposited by deltaic progradation, followed by shoreface erosion and submergence. A variety of sedimentary facies has been identified, including prodelta, delta fringe, distributary, lagoonal, barrier island, and...
Occurrence of a South American Armored Catfish in the Hillsborough River, Florida
M.E. Ludlow, S. J. Walsh
1991, Florida Scientist (54) 48-50
Abstract not supplied at this time...
Protein and mitochondrial DNA variation in the salamander Phaeognathus hubrichti
M.L. McKnight, C.K. Dodd Jr., C.M. Spolsky
1991, Herpetologica (47) 440-447
Abstract not supplied at this time...
The influence of ambient salinity on routine metabolism in the teleost Cyprinodon variegatus Lacepède
F.G. Nordlie, S. J. Walsh, D. C. Haney, T.F. Nordlie
1991, Journal of Fish Biology (38) 115-122
Routine metabolism of the euryhaline cyprinodontid Cyprinodon variegatus Lacepede was measured at a series of ambient salinities ranging from fresh water through 100‰. Fish used had been sequentially acclimated to the test salinities (ambient temperature of 20±1° C and a 12: 12 L: D schedule). Routine metabolic rates were highest at ambient salinities...
A new approach to plane-sweep overlay: topological structuring and line-segment classification
Jan W. van Roessel
1991, Cartography and Geographic Information Systems (18) 49-67
An integrated approach to spatial overlay was developed with the objective of creating a single function that can perform most of the tasks now assigned to discrete functions in current systems. Two important components of this system are a unique method for topological structuring, and a method for attribute propagation...
An epizootic of Florida manatees associated with a dinoflagellate bloom
T. J. O'Shea, G. B. Rathbun, R. K. Bonde, C.D. Buergelt, D.K. Odell
1991, Marine Mammal Science (7) 165-179
Over a 10-wk period in early 1982, 39 Florida manatees (Trichechus manatus latirostris) were found dead in the lower Caloosahatchee River and nearby waters of southwestern Florida. Two were killed by boats. The remainder showed no evidence of trauma. Lesions indicative of infectious agents were not identified, and bacteriological and...
Belize--a last stronghold for manatees in the Caribbean
T. J. O'Shea, C.A. Salisbury
1991, Oryx (5) 156-164
Belize is a small country but it offers a safe haven for the largest number of manatees in the Caribbean. The authors' survey in 1989 revealed that there has been no apparent decline since the last study in 1977. However, there is no evidence for population growth either and as...
Distribution patterns of individually identifiable West Indian manatees (Trichechus manatus) in Florida
J.P. Reid, G. B. Rathbun, J.R. Wilcox
1991, Marine Mammal Science (7) 180-190
Photographs of distinctively scarred manatees (Trichechus manatus) were taken at aggregation sites throughout Florida and assembled into a catalog for identifying individuals. Resightings of known manatees in different years or at different locations enabled us to document site fidelity and long-distance movements. Of the 891 individuals included in the catalog...
Rivulus immaculatus, a new killifish from Venezuela (Cyprinodontiformes, Rivulidae)
J.E. Thomerson, L.G. Nico, D.C. Taphorn
1991, Copeia (1991) 323-328
Abstract not supplied at this time...
Quantitative controls on submarine slope failure morphology
H.J. Lee, W. C. Schwab, B. D. Edwards, R. E. Kayen
1991, Marine Geotechnology (10) 143-157
The concept of the steady-state of deformation can be applied to predicting the ultimate form a landslide will take. The steady-state condition, defined by a line in void ratio-effective stress space, exists at large levels of strain and remolding. Conceptually, if sediment initially exists with void ratio-effective stress conditions above...
The I/S-to-illite reaction in the late stage diagenesis
B. Lanson, D. Champion
1991, American Journal of Science (291) 473-506
No abstract available....
Scaphirhynchus suttkusi, a new sturgeon (Pisces: Acipenseridae) from the Mobile Basin of Alabama and Mississippi
J.D. Williams, G.H. Clemmer
1991, Bulletin of the Alabama Museum of Natural History (10) 17-31
Abstract not supplied at this time...
Commentary on the sphalerite geobarometer
P. Toulmin III, P. B. Barton Jr., L.B. Wiggins
1991, American Mineralogist (76) 1038-1051
The FeS content of sphalerite in assemblages with pyrite and pyrrhotite has been widely used and widely criticized as a geobarometer. The commonly accepted form of the geobarometer is based on the composition of sphalerite being independent of temperature below about 550??C at all pressures up to at least 10...
