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Articles 1 - 30 of 36
Full-Text Articles in Life Sciences
Size Variation Of Ungraded And Graded Channel Catfish Reared In Cages, Donald C. Greenland, Walter R. Robison, Scott H. Newton
Size Variation Of Ungraded And Graded Channel Catfish Reared In Cages, Donald C. Greenland, Walter R. Robison, Scott H. Newton
Journal of the Arkansas Academy of Science
Graded and ungraded channel catfish (Ictalurus punctatus) fingerlings stocked in three partitioned floating cages were reared for 140 days during the summer, 1982. Fish were fed to satiation once daily with a commercial pelleted ration. At harvest, graded fish averaged 403 g and ungraded 362 g. Coefficients of variation indicated graded fish were more uniform in size and a significantly greater proportion of the graded fish were of salable size (> 340 g).
Effects Of Sewage Pollution In The White River, Arkansas, Arthur V. Brown, Lawrence D. Willis, Peter P. Brussock
Effects Of Sewage Pollution In The White River, Arkansas, Arthur V. Brown, Lawrence D. Willis, Peter P. Brussock
Journal of the Arkansas Academy of Science
Recently there has been much emphasis placed on the importance of leaf detritus processing to the energetics of stream invertebrates. This study was designed primarily to assess the effects of municipal effluent on the ability of a stream community to utilize leaf detritus, and secondarily to evaluate the extent of the pollution of the White River by the Fayetteville, Arkansas, effluent discharge. Physical and chemical water quality and benthos were sampled periodically at one station upstream and two stations downstream from the discharge, and in the Richland Creek tributary. Processing of leaf detritus was also studied at each site using …
Short Creek Oolite (Lower Mississippian) Deposition, War Eagle Quarry, Madison County, Arkansas, Barbara A. Lisle
Short Creek Oolite (Lower Mississippian) Deposition, War Eagle Quarry, Madison County, Arkansas, Barbara A. Lisle
Journal of the Arkansas Academy of Science
The Short Creek Oolite is the only formally designated member of the Lower Mississippian Boone Formation. Although oolite deposits are often considered to be formed in shoal areas, detailed study of the War Eagle Short Creek disclosed characteristics incompatible with deposition as an oolite shoal. At the War Eagle Quarry, the Short Creek Oolite occurs between deep water strata and there is a conspicuous absence of cross-stratification and other shallow water bedding features. Modal analysis revealed a lower oolith content than found in Recent oolite shoals or in the Short Creek Oolite of Missouri, which has been interpreted as a …
Computer Pattern Recognition Of Action Potentials, Ronald S. Remmel
Computer Pattern Recognition Of Action Potentials, Ronald S. Remmel
Journal of the Arkansas Academy of Science
A general method of pattern recognition was applied to the problem of recognizing extracellularly-recorded neuronal action potentials in the presence of noise and other pulses. A PDP1 1/23 performed the calculations. There were four stages: 1.) A bandpass filter attenuated noises; 2.) the data input program digitized the signal every 55 μsec. If the signal exceeded a threshold, 12 samples of the signal and the time were written onto the disk; 3.) the pulse discriminating program recognized an action potential by fitting the 12 points with this function: v(t) = (a + bt + ct² ) exp(-t/Ƭ). For each pulse …
Fishes Of The Antoine River, Little Missouri River System, Southwestern Arkansas, Henry W. Robison, Elaine Laird, Darryl Koym
Fishes Of The Antoine River, Little Missouri River System, Southwestern Arkansas, Henry W. Robison, Elaine Laird, Darryl Koym
Journal of the Arkansas Academy of Science
The fishes of the Antoine River (Little Missouri River system) in southwestern Arkansas were surveyed from September, 1980 - June, 1982. Thirty-four field collections plus literature and museum records, revealed a total of 60 species in 29 genera representing 16 families to presently inhabit the river system. Comments are presented on life history aspects, systematics and occurrence of fishes in the study area.
Prairie Phenology And Seed Germination, Donald E. Culwell, Robert Wright
Prairie Phenology And Seed Germination, Donald E. Culwell, Robert Wright
Journal of the Arkansas Academy of Science
No abstract provided.
Aquatic Macroinvertebrates Of The Hiatt Prairie Region, Franklin County, Arkansas, Julie A. Huggins, George L. Harp
Aquatic Macroinvertebrates Of The Hiatt Prairie Region, Franklin County, Arkansas, Julie A. Huggins, George L. Harp
Journal of the Arkansas Academy of Science
No abstract provided.
Curatorial Notes From The Cryptogamic Herbarium At The University Of Central Arkansas, Jewel E. Moore
Curatorial Notes From The Cryptogamic Herbarium At The University Of Central Arkansas, Jewel E. Moore
Journal of the Arkansas Academy of Science
No abstract provided.
Neutral Sugars In Selected Pit Viper, Elapid, Lizard And Scorpion Venoms, Ahmed El-Sherif, Paul D. Gwinup, Bob D. Johnson, Dewey H. Sifford
Neutral Sugars In Selected Pit Viper, Elapid, Lizard And Scorpion Venoms, Ahmed El-Sherif, Paul D. Gwinup, Bob D. Johnson, Dewey H. Sifford
Journal of the Arkansas Academy of Science
No abstract provided.
Preliminary Report On The Zygoptera (Damselflies) Of Arkansas, George L. Harp
Preliminary Report On The Zygoptera (Damselflies) Of Arkansas, George L. Harp
Journal of the Arkansas Academy of Science
No abstract provided.
Comparison Of Two Year Classes Of Hybrid Grass Carp And Grass Carp For Aquatic Plant Control, Mike Freeze, Scott Henderson
Comparison Of Two Year Classes Of Hybrid Grass Carp And Grass Carp For Aquatic Plant Control, Mike Freeze, Scott Henderson
Journal of the Arkansas Academy of Science
Two year classes of grass carp and F, hybrids resulting from bighead carp male x grass carp female were compared at various stocking densities for aquatic plant control. One and two year old grass carp exhibited higher survival rates and better growth rates than the same age hybrid grass carp. The presence of grass carp or hybrid grass carp decreased both Secchi disc transparencies and dissolved oxygen values. Grass carp had a greater negative effect upon these measurements because they removed the vegetation quicker than the hybrid grass carp. These apparent detrimental effects on water quality are necessary trade-offs for …
Spawning The Grass Carp Female X Bighead Carp Male, Mike Freeze, Scott Henderson
Spawning The Grass Carp Female X Bighead Carp Male, Mike Freeze, Scott Henderson
Journal of the Arkansas Academy of Science
Methods and procedures for artificially spawning the female grass carp (Ctenopharyngodon idella) X male bighead carp (Aristichthys nobilis) are presented. Broodstock selection and treatment, hormone injections, ovulation, fertilization, hatching techniques and stocking rates are discussed. This paper outlines the procedures necessary to successfully produce hybrid grass carp
Spiders Collected From Abandoned Mine Tunnels In The Ouachita National Forest, Peggy Rae Dorris, David A. Saugey
Spiders Collected From Abandoned Mine Tunnels In The Ouachita National Forest, Peggy Rae Dorris, David A. Saugey
Journal of the Arkansas Academy of Science
No abstract provided.
Abundance And Seasonal Occurrence Of Psorophora Columbiae In A Northeast Arkansas Ricefield Community, Larry A. Olson, Julia A. Huggins
Abundance And Seasonal Occurrence Of Psorophora Columbiae In A Northeast Arkansas Ricefield Community, Larry A. Olson, Julia A. Huggins
Journal of the Arkansas Academy of Science
Increased population levels of the dark ricefield mosquito, Psorophora columbiae (Dyar and Knab), have been shown to be associated with rice cultivation in Arkansas and several other states. Four standard New Jersey light traps were operated daily between May 30 and October 2 of 1981 and 1982 to determine the relative abundance and seasonal occurrence of this species in NE Arkansas. The effect of trap distance from nearby rice on the number of adult P. columbiae collected was assessed by comparing weekly totals from 2 traps located within 0.9 km of rice fields with totals from 2 traps situated beyond …
Relationship Between Physical Conditioning And Plasma High Density Lipoprotein-Cholesterol Concentration, Leland F. Morgans, Dennis A. Baeyens, Manford D. Morris
Relationship Between Physical Conditioning And Plasma High Density Lipoprotein-Cholesterol Concentration, Leland F. Morgans, Dennis A. Baeyens, Manford D. Morris
Journal of the Arkansas Academy of Science
Five subjects (three females and two males) took part in an exercise regimen in order to determine if aerobic exercise results in an increase in high-density lipoprotein-cholesterol levels (HDL-C) in the plasma. The exercise regimen consisted of running three miles a day, five days per week for six months. Running speed was at such a pace that the subjects attained a minimum of 60% of their maximal heart rate reserve (MHRR). Before the training program began the following parameters were measured in all of the subjects: height, weight, percent body fat, maximal oxygen consumption (Vₒ₂ max), vital capacity, resting heart …
Twenty-Two New Species Of Spiders For The Arkansas Checklist, Mary L. Beck, Peggy Rae Dorris
Twenty-Two New Species Of Spiders For The Arkansas Checklist, Mary L. Beck, Peggy Rae Dorris
Journal of the Arkansas Academy of Science
No abstract provided.
Neviusia Alabamensis: A Phytogeographic Analysis, Alice A. Long
Neviusia Alabamensis: A Phytogeographic Analysis, Alice A. Long
Journal of the Arkansas Academy of Science
No abstract provided.
Distribution And Seasonal Occurrence Of The Scutelleridae, Corimelaenidae And Cydnidae Of Arkansas, Linda A. Lee, Harvey E. Barton
Distribution And Seasonal Occurrence Of The Scutelleridae, Corimelaenidae And Cydnidae Of Arkansas, Linda A. Lee, Harvey E. Barton
Journal of the Arkansas Academy of Science
A total of 16 genera and 37 species and subspecies of Corimelaenidae, Cydnidae and Scutelleridae is recorded as occurring or possibly occurring in Arkansas. Nine species of Scutelleridae contained in six genera, 13 species and subspecies in three genera of Corimelaenidae ( =Thyreocoridae) and 15 species and subspecies of Cydnidae found in seven genera are reported as occurring or possibly occurring in Arkansas. Twenty-seven species and subspecies contained in 13 genera were collected or recorded from entomological holdings within the state. Two species in two genera were reported in the literature as occurring in Arkansas. Based on distribution records in …
Range Extension Of The Silver Carp, Hypophthalmichthys Molitrix, F. Allen Carter, John K. Beadles
Range Extension Of The Silver Carp, Hypophthalmichthys Molitrix, F. Allen Carter, John K. Beadles
Journal of the Arkansas Academy of Science
No abstract provided.
Selection Of Scales For Growth Analysis Of Largemouth Bass, Donald C. Jackson, Raj V. Kilambi
Selection Of Scales For Growth Analysis Of Largemouth Bass, Donald C. Jackson, Raj V. Kilambi
Journal of the Arkansas Academy of Science
Scales from four regions of the body of largemouth bass were compared for efficacy in estimating fish length at the time of scale formation and at capture. The scales from above and below the lateral line in the pectoral and caudal peduncle regions yielded intercepts of 64.73, 52.36, 19.77 and 25.81 respectively for the total length-scale radius relationship. These intercept values represent the fish length at the time of scale formation. By the regression of estimated lengths at capture on empirical lengths it was found that the caudal peduncle scales were better suited in predicting fish length.
Status Of The Bat Myotis Keenii In The Arkansas Ozarks, Michael J. Harvey, V. Rick Mcdaniel
Status Of The Bat Myotis Keenii In The Arkansas Ozarks, Michael J. Harvey, V. Rick Mcdaniel
Journal of the Arkansas Academy of Science
No abstract provided.
First Host Plant Records For Chelysomidea Guttata (Herrich-Schaeffer) (Hemiptera: Scutelleridae, With Notes On The Biology And Distribution, Julia L. Reid, Harvey E. Barton
First Host Plant Records For Chelysomidea Guttata (Herrich-Schaeffer) (Hemiptera: Scutelleridae, With Notes On The Biology And Distribution, Julia L. Reid, Harvey E. Barton
Journal of the Arkansas Academy of Science
No abstract provided.
Mosquitofish Production In Monoculture And Polyculture Ponds, Walter R. Robison, Scott H. Newton, Max V. Meisch
Mosquitofish Production In Monoculture And Polyculture Ponds, Walter R. Robison, Scott H. Newton, Max V. Meisch
Journal of the Arkansas Academy of Science
No abstract provided.
Arkansas Range Extensions Of The Seminole Bat (Lasiurus Seminolus) And Eastern Big-Eared Bat (Plecotus Rafinesquii) And Additional County Records For The Hoary Bat (Lasiurus Cinereus), Silver-Haired Bat (Lasionycteris Noctivagans) And Evening Bat..., Darrell R. Heath, Gary A. Heidt, David A. Saugey, V. Rick Mcdaniel
Arkansas Range Extensions Of The Seminole Bat (Lasiurus Seminolus) And Eastern Big-Eared Bat (Plecotus Rafinesquii) And Additional County Records For The Hoary Bat (Lasiurus Cinereus), Silver-Haired Bat (Lasionycteris Noctivagans) And Evening Bat..., Darrell R. Heath, Gary A. Heidt, David A. Saugey, V. Rick Mcdaniel
Journal of the Arkansas Academy of Science
No abstract provided.
Repair Of Ultraviolet And Gamma-Ray Induced Lethal Damage In An Insect Tissue Culture Cell Line, Craig Endres, Susan Kulp, H. Gaston Griggs
Repair Of Ultraviolet And Gamma-Ray Induced Lethal Damage In An Insect Tissue Culture Cell Line, Craig Endres, Susan Kulp, H. Gaston Griggs
Journal of the Arkansas Academy of Science
No abstract provided.
Phytoplankton Community Structure In Dardanelle Reservoir, Arkansas, 1975-1982, John D. Rickett, Robert L. Watson
Phytoplankton Community Structure In Dardanelle Reservoir, Arkansas, 1975-1982, John D. Rickett, Robert L. Watson
Journal of the Arkansas Academy of Science
Phytoplankton data were collected with standard equipment and procedures over an eight-year period (1975-1982) in Dardanelle Reservoir, Arkansas. Community abundance and diversity at the genus level are described. Sixty-five genera representing 35 families and five divisions were identified. Total phytoplankton abundance and diversity were quite uniform among the stations but fluctuated considerably with time. These fluctuations did not correspond clearly with season. Dominant taxa were seasonal, though, with diatoms being usually dominant in January, April and October, and blue-greens dominant in July. The phytoplankton community structure has not been significantly altered by the operation of ANO Unit I.
Bryophyte-Lichen Communities Within Hot Springs National Park, Arkansas I., Jewel E. Moore, Steve L. Timme
Bryophyte-Lichen Communities Within Hot Springs National Park, Arkansas I., Jewel E. Moore, Steve L. Timme
Journal of the Arkansas Academy of Science
No abstract provided.
New County And State Records Of Mosses From Arkansas, Steve L. Timme, Jewel E. Moore
New County And State Records Of Mosses From Arkansas, Steve L. Timme, Jewel E. Moore
Journal of the Arkansas Academy of Science
No abstract provided.
Success Of Wild-Trapped Compared To Captivity-Raised Birds In Restoring Wild Turkey Populations To Northwestern Arkansas, Douglas A. James, L. Glen Fooks, John R. Preston
Success Of Wild-Trapped Compared To Captivity-Raised Birds In Restoring Wild Turkey Populations To Northwestern Arkansas, Douglas A. James, L. Glen Fooks, John R. Preston
Journal of the Arkansas Academy of Science
Reintroduction of wild turkeys into northwestern Arkansas was studied at 10 release sites in the late 1950's. Native birds trapped in southern Arkansas were released at five study areas, and birds from wild Pennsylvania stock reared in captivity were released in five other areas. Although both types of turkeys reproduced, most populations of captivity-raised turkeys decreased sharply whereas all populations of wild-trapped birds exhibited marked increases. Range extension averaged nearly 2.5 miles per year in expanding wild-trapped populations. Captivity-raised birds were comparatively tame and often were found near human habitation. Current expanding turkey populations in the Arkansas Ozarks undoubtedly are …
First Report Of Brazilian Free-Tailed Bat Maternity Colonies In Arkansas, David A. Saugey, Darrell R. Heath, Clark Efaw, Gary A. Heidt, Teresa E. Beggs
First Report Of Brazilian Free-Tailed Bat Maternity Colonies In Arkansas, David A. Saugey, Darrell R. Heath, Clark Efaw, Gary A. Heidt, Teresa E. Beggs
Journal of the Arkansas Academy of Science
No abstract provided.