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University of Arkansas, Fayetteville

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Articles 1171 - 1200 of 1561

Full-Text Articles in Animal Sciences

Gyratrix Hermaphroditus: A State Record For Arkansas, Jane Dunn Jan 2003

Gyratrix Hermaphroditus: A State Record For Arkansas, Jane Dunn

Journal of the Arkansas Academy of Science

No abstract provided.

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Dna Sequence Of Melanocortin 1-Receptor Gene In Coturnix Japonica: Correlation With Three E Locus Alleles, E, E+, Erh, Rupali B. Ugrankar Jan 2003

Dna Sequence Of Melanocortin 1-Receptor Gene In Coturnix Japonica: Correlation With Three E Locus Alleles, E, E+, Erh, Rupali B. Ugrankar

Inquiry: The University of Arkansas Undergraduate Research Journal

The melanocortin 1-receptor (MC1-R) gene plays a key role in the expression of fur and feather color in mammals and birds by regulating the distribution of two melanin pigments: eumelanin (black/brown) and pheomelanin (red/yellow). MC1-R corresponds to the classical Extension (E) locus in mice, pigs, dogs, horses, and chickens. Three E locus alleles, the wild-type (e + ), brown (E), and redhead (e rh) have been identified in Japanese quail (Coturnix japonica). To determine if the quail E locus phenotypes were due to variation in the MC1-R gene, the coding region of the MC1-R gene was PCR amplified and DNA …

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Letter From The Dean, Gregory J. Weidemann Jan 2003

Letter From The Dean, Gregory J. Weidemann

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Instructions For Authors, Discovery Editors Jan 2003

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Experimental Channel Catfish Virus Infection Mimics Natural Infection Of Channel Catfish, Robin L. Stingley, Wayne L. Gray, Billy R. Griffin, Reid Landes Jan 2003

Experimental Channel Catfish Virus Infection Mimics Natural Infection Of Channel Catfish, Robin L. Stingley, Wayne L. Gray, Billy R. Griffin, Reid Landes

Journal of the Arkansas Academy of Science

Channel catfish virus (CCV) causes a severe hemorrhagic disease in channel catfish fry and fingerlings. CCV epizootics are associated with elevated water temperatures and high mortality rates. Survivors of acute disease are latently infected with i virus. In this study, we investigated conditions effecting CCV pathogenesis and latency utilizing an experimental immersion model to simulate natural infection and a population of Arkansas catfish verified to have no prior CCV exposure, the results indicate that the Auburn- 1 laboratory strain is comparable to CCV field isolates in virulence and ability to establish latent infection. The study confirms that water temperature and …

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Subterranean Biodiversity Of Arkansas, Part 2: Status Update Of The Foushee Cavesnail, Amnicola Cora Hubricht, 1979 (Mollusca: Gastropoda: Hydrobiidae), G. O. Graening Jan 2003

Subterranean Biodiversity Of Arkansas, Part 2: Status Update Of The Foushee Cavesnail, Amnicola Cora Hubricht, 1979 (Mollusca: Gastropoda: Hydrobiidae), G. O. Graening

Journal of the Arkansas Academy of Science

No abstract provided.

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Genetic Similarity Of Shadow And Arkansas Basses (Ambloplites) Determined By Mitochondrial Dna Analysis, Ronald L. Johnson, Carrie F. Cavenaugh Jan 2003

Genetic Similarity Of Shadow And Arkansas Basses (Ambloplites) Determined By Mitochondrial Dna Analysis, Ronald L. Johnson, Carrie F. Cavenaugh

Journal of the Arkansas Academy of Science

No abstract provided.

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The Effects Of Classic And Variant Infectious Bursal Disease Viruses On Lymphocyte Populations In Specific-Pathogen-Free White Leghorn Chickens, Christina L. Johnson, Ashley K. Cox, April D. Keeter, Will J. Quinn, Gisela F. Erf, Lisa A. Newberry Jan 2003

The Effects Of Classic And Variant Infectious Bursal Disease Viruses On Lymphocyte Populations In Specific-Pathogen-Free White Leghorn Chickens, Christina L. Johnson, Ashley K. Cox, April D. Keeter, Will J. Quinn, Gisela F. Erf, Lisa A. Newberry

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Infectious bursal disease virus (IBDV) is a pathogen that primarily infects B lymphocytes in domestic avian species. This viral infection has been associated with immunosuppression, clinical disease/mortality, and enteric malabsorption effects. The purpose of this experiment was to compare the effects of a classic (USDA-STC) and a new variant IBDV (RB-4, known to induce primarily the enteric disease) on immune cell populations in lymphoid organs. Seventeen-day-old specific-pathogen-free (SPF) White Leghorn chickens were either not infected (control) or inoculated with either USDA-STC or RB-4 IBD viral isolate. On days 3 and 5 post-inoculation (PI), lymphoid tissues were collected to prepare cell …

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Phase-Feeding Affects Crude Protein Intake, Excretion, And Retention Of Broilers From 21 To 63 Days, Niki Loupe, Trey Pope, Padmakumar Pillai, Jason Emmert Jan 2003

Phase-Feeding Affects Crude Protein Intake, Excretion, And Retention Of Broilers From 21 To 63 Days, Niki Loupe, Trey Pope, Padmakumar Pillai, Jason Emmert

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

An experiment was conducted to assess effects of phase-feeding (PF) on crude protein (CP) intake, excretion, and retention of broilers. Six birds were housed individually and were fed diets formulated using recommendations from National Research Council (NRC) or linear regression equations. Two PF treatments were prepared: standard (PF) and low (PF10), in which predicted lysine, sulfur amino acids, and threonine recommendations were reduced by 10%. For PF and PF10, two diets (high-nutrient and low-nutrient density) were blended in variable quantities to produce rations matching predicted amino acid requirements over two intervals. Birds were fed a single NRC grower and finisher …

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Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 4 2003, Several Authors Jan 2003

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 4 2003, Several Authors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Contents, Discovery Editors Jan 2003

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Reciprocal Translocation Reestablishes Breeding Status Of Mississippi Alluvial Plain Population Of Red-Cockaded Woodpeckers In Arkansas, William C. Holimon, Warren G. Montague Jan 2003

Reciprocal Translocation Reestablishes Breeding Status Of Mississippi Alluvial Plain Population Of Red-Cockaded Woodpeckers In Arkansas, William C. Holimon, Warren G. Montague

Journal of the Arkansas Academy of Science

No abstract provided.

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Status And Distribution Of Freshwater Mussels (Unionacea) Inhabiting The Saline River / Holly Creek Bottoms Area, Saline County, Arkansas, Chris L. Davidson, Dave Gosse Jan 2003

Status And Distribution Of Freshwater Mussels (Unionacea) Inhabiting The Saline River / Holly Creek Bottoms Area, Saline County, Arkansas, Chris L. Davidson, Dave Gosse

Journal of the Arkansas Academy of Science

No abstract provided.

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New Records Of The Eastern Chipmunk (Tamias Striatus) From Arkansas, D. Blake Sasse Jan 2003

New Records Of The Eastern Chipmunk (Tamias Striatus) From Arkansas, D. Blake Sasse

Journal of the Arkansas Academy of Science

No abstract provided.

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Nesting Willow Flycatchers Discovered At Harrison, Arkansas, William C. Holimon, Douglas A. James Jan 2003

Nesting Willow Flycatchers Discovered At Harrison, Arkansas, William C. Holimon, Douglas A. James

Journal of the Arkansas Academy of Science

The Willow Flycatcher, Empidonax traillii (Audubon), was a newly discovered species when John James Audubon found it at Arkansas Post in 1822. The bird was fairly common in summer in prairie-scrub habitat around Arkansas at least until the 1950s. There after numbers declined until one or two individuals were found occasionally at a single site in Benton County in the late 1980s through 1990s. We found a population consisting of three nesting territories on Baker Prairie Natural Area in Harrison, Boone County, Arkansas. This represents the first confirmed nesting since 1990 and only the second since 1969. A nest with …

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Genetic Relationships Of Some Common Arkansas Freshwater Sunfishes (Centrarchidae: Lepomis) Inferred From Restriction Endonuclease Analysis Of Mitochondrial Dna, Ronald L. Johnson, K. Ashlei Williams Jan 2003

Genetic Relationships Of Some Common Arkansas Freshwater Sunfishes (Centrarchidae: Lepomis) Inferred From Restriction Endonuclease Analysis Of Mitochondrial Dna, Ronald L. Johnson, K. Ashlei Williams

Journal of the Arkansas Academy of Science

Geographic isolation and habitat specialization has aided in the evolution and maintenance of genetic integrity of the lepomid sunfishes (Lepomis: Centrarchidae) of North America. Our goal was to measure genetic distances between four of the eleven extant sunfish species by using mitochondrial DNA analysis. Mitochondrial DNA restriction fragment length polymorphisms (RFLPs) were examined in bluegill (L. macrochirus), redear sunfish (L. microlophus), longear sunfish (L. megalotis), and green sunfish (L. cyanellus) using 15 restriction endonucleases. The largemouth bass (Micropterus salmoides) was used as an outgroup. The phylogeny inferred from Dollo parsimony cladistic analysis largely concurred with published results from allozyme analyses …

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Herpetofaunal Inventory Of Arkansas Post National Memorial, Arkansas County, Arkansas, Malcolm L. Mccallum, Stanley E. Trauth, Robert G. Neal, Vernon E. Hoffman Jan 2003

Herpetofaunal Inventory Of Arkansas Post National Memorial, Arkansas County, Arkansas, Malcolm L. Mccallum, Stanley E. Trauth, Robert G. Neal, Vernon E. Hoffman

Journal of the Arkansas Academy of Science

The Arkansas Post National Memorial (ARPO) is a unique historical landmark with an interesting herpetofaunal community. We conducted an amphibian and reptile inventory of this national park from 2000-2002. We found eight amphibian and 21 reptilian species inhabiting the park. These included eight species not previously identified at ARPO. Overall species richness was highest at Alligator Slough, although the northern portion of ARPO was relatively rich. Aquatic trophic guilds included 7 (36.8%) piscivores, 7 (36.8%) omnivores, 4 (21.1%) insectivores, and one (5.3%) carnivore. The terrestrial trophic guilds included 13 (76.5%) insectivores, 2 (11.8%) carnivores, and 1 (5.9%) each of omnivores …

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Dna Sequence Of Melanocortin 1-Receptor Gene In Coturnix Japonica: Correlation With Three E Locus Alleles—E,E+, And Erh, Rupali Ugrankar, Kim Cheng, Ronald Okimoto Jan 2003

Dna Sequence Of Melanocortin 1-Receptor Gene In Coturnix Japonica: Correlation With Three E Locus Alleles—E,E+, And Erh, Rupali Ugrankar, Kim Cheng, Ronald Okimoto

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

The melanocortin 1-receptor (MC1-R) gene plays a key role in the expression of fur and feather color in mammals and birds by regulating the distribution of two melanin pigments: eumelanin (black/brown) and pheomelanin (red/yellow). MC1-R corresponds to the classical Extension (E) locus in mice, pigs, dogs, horses, and chickens. Three E locus alleles, the wild-type (e+), brown (E), and redhead (erh) have been identified in Japanese quail (Coturnix japonica). To determine if the quail E locus phenotypes were due to variation in the MC1-R gene, the coding region of the MC1-R gene was PCR amplified and DNA sequenced using genomic …

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Dna Sequence Analysis Of The Freshwater Mussel Lampsilis Hydiana (Bivalva: Unionidae) In Select Ozark And Ouachita Mountain Streams Of Arkansas, Jennifer A. Lewter, Allen L. Szalanski, Tsunemi Yamashita Jan 2003

Dna Sequence Analysis Of The Freshwater Mussel Lampsilis Hydiana (Bivalva: Unionidae) In Select Ozark And Ouachita Mountain Streams Of Arkansas, Jennifer A. Lewter, Allen L. Szalanski, Tsunemi Yamashita

Journal of the Arkansas Academy of Science

No abstract provided.

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Arkansas Animal Science Department Report 2002, Zelpha B. Johnson, D. Wayne Kellogg Dec 2002

Arkansas Animal Science Department Report 2002, Zelpha B. Johnson, D. Wayne Kellogg

Arkansas Agricultural Experiment Station Research Series

No abstract provided.

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Impact Of The Agricultural Sector On The Arkansas Economy, H. L. Goodwin Jr., Jennie Popp, Wayne Miller, Gina Vickery, Z. Clayton-Niederman Oct 2002

Impact Of The Agricultural Sector On The Arkansas Economy, H. L. Goodwin Jr., Jennie Popp, Wayne Miller, Gina Vickery, Z. Clayton-Niederman

AAES Research Reports and Research Bulletins

Agriculture historically has been one of the primary sectors of the Arkansas economy. Agriculture is defined as the sum of agricultural, forestry, and fisheries production and processing activities unless otherwise specified. Not only does agriculture contribute to the economy through direct agricultural production and added value processing, it also plays an important role through the economy’s other sectors. Utilizing data from the United States Bureau of Economic Affairs and the State of Arkansas, the economic impact of agriculture on the Arkansas economy was estimated for the latest year available, 1999. Gross State Product (GSP) information for Arkansas was compared with …

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Distributions And Geographical Relationships Of The Polygyrid Land Snails (Mollusca, Gastropoda, Polygyridae) Of Arkansas, Gerald E. Walsh, Brian F. Coles Jan 2002

Distributions And Geographical Relationships Of The Polygyrid Land Snails (Mollusca, Gastropoda, Polygyridae) Of Arkansas, Gerald E. Walsh, Brian F. Coles

Journal of the Arkansas Academy of Science

The Arkansas distributions of land mollusks of the family Polygyridae are presented based on the results of a state-wide survey and a critical review of published and unpublished locality records. Six of the 45 species previously recorded for Arkansas are excluded because they were misidentified, do not have established populations in the state, or are found only as fossils. Four others are not mapped because of a lack of recent distributional data or because the specific status of a form is unclear. There is a predominant pattern of occurrence limited to the northern, northwestern, or western parts of the state. …

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Contents, Discovery Editors Jan 2002

Contents, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 3 2002, Several Authors Jan 2002

Discovery: The Student Journal Of Dale Bumpers College Of Agricultural, Food And Life Sciences - Volume 3 2002, Several Authors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Instructions For Authors, Discovery Editors Jan 2002

Instructions For Authors, Discovery Editors

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Letter From The Dean, Gregory J. Weidemann Jan 2002

Letter From The Dean, Gregory J. Weidemann

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

No abstract provided.

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Distribution Of Clinostomum Marginatum (Yellow Grub) Metacercaria In Smallmouth Bass Populations From Crooked Creek In North Central Arkansas, James J. Daly, Bruce Deyoung, Terryl L. Hostetler, Randal J. Keller Jan 2002

Distribution Of Clinostomum Marginatum (Yellow Grub) Metacercaria In Smallmouth Bass Populations From Crooked Creek In North Central Arkansas, James J. Daly, Bruce Deyoung, Terryl L. Hostetler, Randal J. Keller

Journal of the Arkansas Academy of Science

Four hundred thirty-three smallmouth bass (Micropterus dolomieui) were collected from ten sites on Crooked Creek in North Central Arkansas from just below the city of Harrison to the White River in the summers of 1988-90. Necropsy of these hosts for yellow grub (Clinostomum marginatum) metacercariae showed a range of mean abundance (average/fish) from 1.4 ±1.9 (SD) at a far up stream site to 105 ± 368 at the White River juncture. An increasing mean abundance of C. marginatum was seen from the uppermost sites of the creek downstream to the White River. Relating stream mileage with mean abundance gave a …

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Epidermal Papilloma In An Ozark Hellbender (Cryptobranchus Alleganiensis Bishopi) From The Spring River Of Northwest Arkansas, Stanley E. Trauth, John C. Harshbarger, Patrick Daniel Jan 2002

Epidermal Papilloma In An Ozark Hellbender (Cryptobranchus Alleganiensis Bishopi) From The Spring River Of Northwest Arkansas, Stanley E. Trauth, John C. Harshbarger, Patrick Daniel

Journal of the Arkansas Academy of Science

An Ozark hellbender (Cryptobranchus alleganiensis bishopi) with multiple, large, warty skin lesions was collected in the Spring River, Fulton County, Arkansas, in 1994. The specimen was a female, 560 mm in total length, and had a mass of 1,947 g. Tissues were formalin-fixed, and three lesions were processed for histopathology. The normal skin at the tumor margins had a stratified squamous epidermis overlying a loose, well-vascularized, heavily pigmented dermis. Poison glands and mucous glands extended from the epidermis into the dermis. The lesions, in contrast, were masses of epidermal cells up to 100 times thicker than the normal epidermis. They …

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Bats Of The Jessieville Ranger District, Ouachita National Forest, Arkansas, C. Renn Tumlison, Tobin Fulmer, Tommy Finley, David A. Saugey Jan 2002

Bats Of The Jessieville Ranger District, Ouachita National Forest, Arkansas, C. Renn Tumlison, Tobin Fulmer, Tommy Finley, David A. Saugey

Journal of the Arkansas Academy of Science

During July and August 2000 and 2001, mist nets were set concentrated on three drainages in the Jessieville District of the Ouachita National Forest: North Fork Ouachita River (ten sites), Irons Fork Creek (five sites), and Muddy Creek (two sites). A total of 83 bats representing seven species was caught during 20 evenings (43 net nights). Sampled habitats included pools in road ruts, intermittent streams, man-made ponds on ridgelines, a wet road rut fed by a seep, small drainages that flowed only after a heavy rain, a standing pool in a clearing, and larger streams. Eastern red bats (Lasiurus borealis) …

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Hazards Of Fishing Gear To Wildlife Of Lakes In Arkansas, Tobin Fulmer, C. Renn Tumlison Jan 2002

Hazards Of Fishing Gear To Wildlife Of Lakes In Arkansas, Tobin Fulmer, C. Renn Tumlison

Journal of the Arkansas Academy of Science

No abstract provided.

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