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Articles 5341 - 5370 of 5607
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Note On The Food Habits Of Selected Raptors From Northeastern Arkansas, Earl L. Hanebrink, Alan F. Posey, Keith B. Sutton
Note On The Food Habits Of Selected Raptors From Northeastern Arkansas, Earl L. Hanebrink, Alan F. Posey, Keith B. Sutton
Journal of the Arkansas Academy of Science
No abstract provided.
Lichens Of Arkansas I: A Summary Of Current Information, Jewel E. Moore
Lichens Of Arkansas I: A Summary Of Current Information, Jewel E. Moore
Journal of the Arkansas Academy of Science
No abstract provided.
Unusual Results From Pellet Analysis Of The American Barn Owl, Tyto Alba Pratincola (Bonaparte), Kenneth N. Paige, Chris T. Mcallister, C. Renn Tumlison
Unusual Results From Pellet Analysis Of The American Barn Owl, Tyto Alba Pratincola (Bonaparte), Kenneth N. Paige, Chris T. Mcallister, C. Renn Tumlison
Journal of the Arkansas Academy of Science
No abstract provided.
Publication Policies And Suggestions For Authors, Academy Editors
Publication Policies And Suggestions For Authors, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Concert Programs 1979-1980, University Of Arkansas, Fayetteville. Department Of Music
Concert Programs 1979-1980, University Of Arkansas, Fayetteville. Department Of Music
Concert Recordings & Programs
This is the annual compilation of music programs from the Department of Music for the time period indicated
A Limnological Study Of Ricks Pond And The Gulpha Creek Drainage In Garland County, Arkansas, Tom M. Buchanan, James Houston, Joe F. Nix, Richard L. Meyer, Eugene H. Schmitz
A Limnological Study Of Ricks Pond And The Gulpha Creek Drainage In Garland County, Arkansas, Tom M. Buchanan, James Houston, Joe F. Nix, Richard L. Meyer, Eugene H. Schmitz
Arkansas Water Resources Center Technical Reports
A limnological investigation of Ricks Pond and the Gulpha Creek drainage of Garland County, Arkansas was conducted between 1 June 1978, and 21 August 1978. Water samples taken from ten stations on three different dates indicated that the stream and pond systems were typical in water quality characteristics of other small, high gradient streams and impoundments in the Ouachita Mountains of Arkansas. In Ricks Pond, thermal stratification occurred along with the development of an oxygen deficient zone below a depth of one meter. Other water quality parameters indicated that Ricks Pond is a moderately productive ecosystem, with the productivity limited …
Hydrolytic And Photochemical Degradation Of Organophosphorus Pesticides, James F. Hinton
Hydrolytic And Photochemical Degradation Of Organophosphorus Pesticides, James F. Hinton
Arkansas Water Resources Center Technical Reports
To keep pace with demands for increasing food supplies to satisfy the expanding world population, modern agriculture has utilized the latest scientific and technological knowledge available. Increases in crop production through the use of growth regulators, fertilizers , herbicides, and insecticides have been little short of phenomenal, and drugs, feed additives, and higher-quality grain and forage have dramatically increased livestock production. But, as is usually the case, this progress has been accompanied by problems, one of the more serious being contamination of our environment by chemicals. Only in recent years have the full effects of these pollutants on the ecological …
Publication Policies And Suggestions For Authors, Academy Editors
Publication Policies And Suggestions For Authors, Academy Editors
Journal of the Arkansas Academy of Science
No abstract provided.
Taste-Masking: Function Of Exaggerated Prandial Drinking In Desalivate Mice, Richard C. Lewis
Taste-Masking: Function Of Exaggerated Prandial Drinking In Desalivate Mice, Richard C. Lewis
Journal of the Arkansas Academy of Science
Taste thresholds for the bitter compound sucrose octaacetate (SOA) were elevated by desalivation in mice. Thresholds were determined for control and experimental animals both before and after ligation of all salivary ducts. There was a significant increase in SOA thresholds in the desalivate mice, and the pre- to post-operative differences in threshold between the control and experimental groups were significant. The altered response to SOA by desalivate mice is shown to be due to the assumption of a prandial pattern of drinking as a result of desalivation. This conclusion is based on experiments with wet mash which failed to show …
Methodology For Analysis Of Diet Grit Size On Molar Attrition For Fourche Maline And Caddo People, Judith C. Stewart, Mary L. Powell, J. C. Rose
Methodology For Analysis Of Diet Grit Size On Molar Attrition For Fourche Maline And Caddo People, Judith C. Stewart, Mary L. Powell, J. C. Rose
Journal of the Arkansas Academy of Science
Using the Murphy (1959) system for scoring the degree of dentin exposure, Fourche Maline (Woodland) molars show a greater attrition rate than Caddo (Mississippian) molars. Archeological evidence suggests that this differential in attrition rates is caused by the use of stone grinders for food preparation in the Fourche Maline culture and their absence among the Caddo. Analysis of scratches on the occlusal surface of molars from these samples confirms this hypothesis. Several techniques for observing these scratches and reconstructing the grit sizes and grit particle frequencies responsible for this differential abrasion are evaluated.
Presence Of An Unusual Eosinophilic Staining Substance In The Blood Of Snakes, James J. Daly Sr., Charles H. Calhoun
Presence Of An Unusual Eosinophilic Staining Substance In The Blood Of Snakes, James J. Daly Sr., Charles H. Calhoun
Journal of the Arkansas Academy of Science
No abstract provided.
Pre- And Post Impoundment Ichthyoparasite Succession In A New Arkansas Reservoir, David A. Becker, William D. Carr, Robert G. Heard, Donald G. Cloutman, Perry D. Holmes, Wallace A. Evans, Mitchell D. Norman, Wilbur B. Owen Jr.
Pre- And Post Impoundment Ichthyoparasite Succession In A New Arkansas Reservoir, David A. Becker, William D. Carr, Robert G. Heard, Donald G. Cloutman, Perry D. Holmes, Wallace A. Evans, Mitchell D. Norman, Wilbur B. Owen Jr.
Arkansas Water Resources Center Technical Reports
Helminth and crustacean parasites from 2,387 Micropterus dolomieui, M. punctulatus, and M. salmoides were utilized to monitor annual pre- and postimpoundment succession patterns spanning eight con- tinuous years in Beaver Reservoir, Arkansas. Incidence of infection by ichthyoparasites with direct life cycles (monogenetic trematodes, leeches, and crustaceans) generally increased following impoundment, although leeches remained relatively constant. Exceptions to this general pattern occurred. Incidence of ichthyoparasites with indirect life cycles (digenetic trematodes, cestodes, acanthocephalans, and nematodes) decreased immediately following impoundment with subsequent increases to a point equal or above that of preimpoundment, although exceptions occurred. Time for species adaptation to the reservoir …
Effects Of Hyperbaric Hypoxia On Some Enzyme Systems In The Mammalian Liver, Dennis A. Baeyens, M. J. Meier
Effects Of Hyperbaric Hypoxia On Some Enzyme Systems In The Mammalian Liver, Dennis A. Baeyens, M. J. Meier
Journal of the Arkansas Academy of Science
The metabolic effects of hypobaric hypoxic stress on the mammalian liver were studied. The lactate dehydrogenase (LDH) and succinate dehydrogenase (SDH) activity of mouse liver homogenates were measured after exposure to an equivalent altitude of 36,000 feet and compared to controls kept at zero altitude. After six and twelve hour incubation periods, the altitude exposed samples demonstrated a significantly higher LDH activity than controls. SDH activity remained unchanged from controls after six hours but was significantly lower than controls after a 12 hour exposure to altitude. It is concluded that the changes in enzyme activity reflect a metabolic control mechanism …
Longevity Of White Bass In Beaver Reservoir, Arkansas, Thomas O. Duncan, Milton R. Myers Jr.
Longevity Of White Bass In Beaver Reservoir, Arkansas, Thomas O. Duncan, Milton R. Myers Jr.
Journal of the Arkansas Academy of Science
No abstract provided.
Species Composition And Diversity Of Hawk Populations In Northeastern Arkansas, Earl L. Hanebrink, Keith B. Sutton, Alan F. Posey
Species Composition And Diversity Of Hawk Populations In Northeastern Arkansas, Earl L. Hanebrink, Keith B. Sutton, Alan F. Posey
Journal of the Arkansas Academy of Science
Species composition and diversity of hawk populations were analyzed for northeastern Arkansas by the use of roadside censuses conducted in September through April from 1974- 1977. Data from 10 years of Jonesboro Christmas Bird Counts were also analyzed. During the roadside survey 20,174 miles were driven and 1819 raptors were counted. Ten species were observed with the Red-tailed Hawk being most abundant followed by the Marsh Hawk and the American Kestrel. Eight species were recorded from the 10 years of Christmas Bird Counts. Annual breeding bird surveys and spot records turned up three additional species making a total of 14 …
Range And Status Of The Nutria, Myocastor Coypus, In Arkansas, Joe W. Bailey, Gary A. Heidt
Range And Status Of The Nutria, Myocastor Coypus, In Arkansas, Joe W. Bailey, Gary A. Heidt
Journal of the Arkansas Academy of Science
An extensive survey has shown that the current range of the nutria, Myocastor coypus. in Arkansas should include the West Gulf Coastal Plain, the Mississippi Alluvial Plain (to Missouri) and the Arkansas Valley along the Arkansas River to Oklahoma. The extensive river and creek systems in the state have provided ready avenues for dispersal, allowing for extremely rapid expansion from the early 1960's when nutria were first observed in the southern part of the state. The current range probably represents most of the suitable habitat in the state and it is felt that further expansion will be held to a …
Loss Of Larval Fish By Epilimnial Discharge From Degray Lake, Arkansas, Thomas E. Moen, Michael R. Dewey
Loss Of Larval Fish By Epilimnial Discharge From Degray Lake, Arkansas, Thomas E. Moen, Michael R. Dewey
Journal of the Arkansas Academy of Science
Weekly samples of larval fish were collected from water discharged from the epilimnion of DeGray Lake into the tailwaters, for power generation, from April through August, 1976 and 1977. Peak rates of loss measured were 1.4 larvae/m³ in May, 1976 and 2.7/m³ in April, 1977. Sunfish, shad and crappie made up 97% of an estimated 83.3 million fish lost in 1976, and 98% of 122.4 million lost in 1977. The most critical period for larval fish loss extended from the last week of April to the first week of June. No definite relationships were noted between length of the power …
Influence Of Lead, An Environmental Pollutant On Metamorphosis Of Rana Utricularia (Amphibia: Ranidae), Gloria L. Yeung
Influence Of Lead, An Environmental Pollutant On Metamorphosis Of Rana Utricularia (Amphibia: Ranidae), Gloria L. Yeung
Journal of the Arkansas Academy of Science
The influence of lead, an environmental pollutant on metamorphosis of Rana utricularia, was examined in this study. Larvae of stage XI (Taylor and Kollros, 1946), beginning of the premetamorphic stage, were exposed to lead concentrations of 0.1 ppm, 0.5 ppm, 1.0 ppm and 1.5 ppm for 106 days. The untreated larvae served as controls. Larvae were observed from early limb bud stage, stage X, through the protrusion of the forelimbs, stage XX. Neither the sequence of developmental events nor the gross external and internal morphology was altered by lead. However, lead prolonged the time of metamorphosis by delaying the completion …
Some Physiological And Morphological Adaptations For Underwater Survival In Natrix Rhombifera And Elaphe Obsoleta, Dennis A. Baeyens, Chris T. Mcallister, Leland F. Morgans
Some Physiological And Morphological Adaptations For Underwater Survival In Natrix Rhombifera And Elaphe Obsoleta, Dennis A. Baeyens, Chris T. Mcallister, Leland F. Morgans
Journal of the Arkansas Academy of Science
The submergence times of the diamondback water snake (Natrix rhombifera) and black rat snake (Elaphe obsoleta) were compared. Both species could easily survive underwater for periods greater than one hour. Furthermore, there was no difference in time of underwater survival in the two species. Some physiological and morphological parameters which may contribute to the ability of N. rhombifera and E. obsoleta to remain submerged were also examined. E. obsoleta was found to have a greater lung volume and larger and more numerous alveoli than N. rhombifera. Both species demonstrated a bradycardia upon submergence but it was less pronounced than the …
Water Resources Aspects Of Coal Transportation By Slurry Pipeline, James W. Moore
Water Resources Aspects Of Coal Transportation By Slurry Pipeline, James W. Moore
Arkansas Water Resources Center Technical Reports
No abstract provided.
Population Dynamics And Species Diversity Of Ichthyo-Parasitofauna Of The Buffalo National River, Raj V. Kilambi, David A. Becker
Population Dynamics And Species Diversity Of Ichthyo-Parasitofauna Of The Buffalo National River, Raj V. Kilambi, David A. Becker
Arkansas Water Resources Center Technical Reports
The Buffalo River originates in the Ozark plateau in Newton County, Arkansas. This magnificent Ozarkian wilderness river is about 238 km long and flows north-eastward to its confluence with the White River. The Buffalo River drains 3,465 km2 and has some 30 named tributaries. In its upper reaches, huge multicolored cliffs extend nearly 213 m above the river as it flows through mountainous countryside which reaches an elevation of 732 m. Within its watershed may be found 700 species of plant life, a habitat for 250 species of birds, and a variety of game animals. In its aquatic habitat …
Natural Areas Preservation In Arkansas, Mina Austin Marsh
Natural Areas Preservation In Arkansas, Mina Austin Marsh
Journal of the Arkansas Academy of Science
No abstract provided.
Continuation Of Spider Research In Arkansas: Ouachita Mountain Area, Peggy Rae Dorris, Fred L. Burnside Jr.
Continuation Of Spider Research In Arkansas: Ouachita Mountain Area, Peggy Rae Dorris, Fred L. Burnside Jr.
Journal of the Arkansas Academy of Science
No abstract provided.
Addendum To "Fishes Of The Fourche River" In North Central Arkansas, Steve M. Bounds
Addendum To "Fishes Of The Fourche River" In North Central Arkansas, Steve M. Bounds
Journal of the Arkansas Academy of Science
No abstract provided.
Anomalies Of Limb Regeneration In The Adult Salamander, Ambystoma Annulatum, Henry E. Young
Anomalies Of Limb Regeneration In The Adult Salamander, Ambystoma Annulatum, Henry E. Young
Journal of the Arkansas Academy of Science
Regeneration in the adult salamander, Ambystoma annulatum, parallels that of the adult newt (Iten & Bryant, 1973). However, a number of unique features become apparent upon examination of anomalies of adult regenerates. Two regenerates which displayed gross abnormalities revealed, upon histological examination, unique features which give insight into a possible pattern of digit formation in this species of adult salamander. Normal regenerates show 4 or 5 digits radiating distal to the same respective number of bones (distal carpals) present in the distal row of wrist bones. The first anomaly showed only two large, fused distal carpals and two lateral digits. …
Epidermal Ridge Formation During Limb Regeneration In The Adult Salamander, Ambystoma Annulatum, Henry E. Young
Epidermal Ridge Formation During Limb Regeneration In The Adult Salamander, Ambystoma Annulatum, Henry E. Young
Journal of the Arkansas Academy of Science
Regeneration was studied in the Ambystoma annulatum by the amputation of the right forearm of twenty-four adults, over a twelve month period. At the termination of the experiment the limbs were reamputated 1-2 mm proximal to the original amputation site. The regenerated portions were staged, examined at the gross morphological level, and prepared for histological examination. Gross examination revealed a thickened, ridge-like projection along the distal edge of all regenerating forelimbs at the Early Bud through Middle Palette Stages. Histological examination confirmed the existence of this structure as early as Wound Healing and continuing through Middle Palette to a pseudo-epidermal …
Distribution, Habitat Notes, And The Status Of The Ironcolor Shiner, Notropis Chalybaeus Cope, In Arkansas, Henry W. Robison
Distribution, Habitat Notes, And The Status Of The Ironcolor Shiner, Notropis Chalybaeus Cope, In Arkansas, Henry W. Robison
Journal of the Arkansas Academy of Science
Field work throughout Arkansas since 1971 and a search of museum records have yielded 35 collections of the iron color shiner, Notropis chalybaeus Cope (Cyprinidae), not previously documented in Arkansas. From these data the iron color shiner is considered to be confined to the Coastal Plain physiographic province of Arkansas below the Fall Line, becoming most abundant in the Ouachita and Red River drainages of southern Arkansas. Notes on habitat preference, species associates, and current status of N. chalybaeus within Arkansas are presented.
Evaluation Of Plantings For Wildlife On A Power Line Right Of Way In Southern Arkansas, Robert A. Pierce, Robert T. Kirkwood
Evaluation Of Plantings For Wildlife On A Power Line Right Of Way In Southern Arkansas, Robert A. Pierce, Robert T. Kirkwood
Journal of the Arkansas Academy of Science
The combination of types of land preparation and species of plants seeded along a power line right-of-way was evaluated in terms of the effects upon wildlife. Relative population densities of plants, birds, and mammals were determined for each of the areas under study. A study of the reduction in maintenance costs in relation to the initial investment for preparation and seeding of the land was made
Immunization Of Rats Against Mesocestoides Corti (Cestoda) By Subcutaneous Vaccination Of Living Tetrathyridia And By Passive Transfer With Serum, Jerry Y. Niederkorn
Immunization Of Rats Against Mesocestoides Corti (Cestoda) By Subcutaneous Vaccination Of Living Tetrathyridia And By Passive Transfer With Serum, Jerry Y. Niederkorn
Journal of the Arkansas Academy of Science
Laboratory rats were subcutaneously vaccinated with 100 live tetrathyridia of Mesocestoides corti (Cestoda) and subsequently intraperitoneally challenged with 50 tetrathyridia. Necropsy 30 days postinfection revealed that vaccinated rats harbored 97.4% fewer worms compared to control rats. In a second experiment, passive transfer of immunity was accomplished by immune serum from subcutaneously vaccinated rats. Rats receiving immune serum harbored 33.4% lighter worm burdens compared to normal serum recipients.
Mosquitofish, Gambusia Affinis (Baird And Girard) Production In Extensive Polyculture System, Scott H. Newton, Andrew J. Merkowsky, Ambus J. Handcock, Max V. Miesch
Mosquitofish, Gambusia Affinis (Baird And Girard) Production In Extensive Polyculture System, Scott H. Newton, Andrew J. Merkowsky, Ambus J. Handcock, Max V. Miesch
Journal of the Arkansas Academy of Science
During 1976, mosquitofish, Gambusia affinis Baird and Girard, were reared in combination with food and game fishes in 0.1 ha culture ponds at the University of Arkansas at Pine Bluff fisheries research facility. Mosquitofish production was 218 kg/ha, with 1683 fish per kilogram, in ponds that were also stocked with channel catfish, Ictalurus punctatus Rafinesque, bigmouth buffalo, Ictiobus cyprinellus Valenciennes, grass carp, Ctenopharyngodon idella Valenciennes, and silver carp, Hypophthalmichthys molitrix Valenciennes. In another similar stocked pond, hybrid sunfish fingerlings depressed mosquitofish yield by 79%. No mosquitofish production was obtained in ponds stocked with 250 largemouth bass, Xficropterus salmoides Lacepede, fry …