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Cellulase Activities Of Soil Fungi, Jacobo Ortega

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

The cellulase activities of 8 isolates of fungi obtained from agricultural soils of Hidalgo County, TX were investigated by measuring the changes in the viscosity of a buffered solution of carboxymethylcellulose (CMC), produced by the fluids obtained from liquid cultures of these isolates. The change in the viscosity of the reaction mixture incubated at constant temperature (30 C) was measured with Cannon-Fenske routine viscometers. A buffered cellulase solution was used as a control.

Due to the variability that existed among the isolates investigated, it was possible to select active producers of cellulase with the method followed in this investigation. The …

Muskrat Population Dynamics And Vegetation Utilization: A Management Plan, Thomas R. Mccabe, Michael L. Wolfe

Aspen Bibliography

Muskrat (Ondatra zibethicus) populations are located in extensive marshes that are managed either privately or by state or federal refuge personnel. Maintenance of a balanced muskrat population is important to marsh management, therefore necessitating accurate density estimates. Feasibility of a vegetational utilization index as a reliable population indicator is being tested at Fish Springs NWR, Utah.

Cellular Response & Histopathological Studies Of Murine Pyelonephritis Experimentally Induced By Aspergillus Flavus, Anna Hansen

Masters Theses & Specialist Projects

Five-week-old male BALB/c mice were anesthetized and incised mid-dorsally to expose the fascia over the right kidney. The kidney was then palpated up and an inoculum of 0.05 ml containing approximately 100,000 viable Asperaillus flavus spores in phosphate-buffered saline was injected into the cortex. A second group of mice underwent similar surgical procedures, but were injected with phosphate-buffered saline only into the right kidney. This group was designated the sham-operated control mice. All mice, including controls, were bled for differential blood counts 24 and 48 h after surgical procedures and subsequently on an every-other-day basis for the duration of the …

Kentucky Warbler (Vol. 56, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

Roadside Zoos Are Not Zoos

Close Up Reports

The HSUS was one of the first national animal welfare organizations to take a long, hard look at all zoos, including roadside menageries. During the last nine years, we have worked intensively, conducting zoo inspections, public education and awareness programs, and developing a working relationship with the professional zoological community as well as U.S. Government agencies charged with the welfare of animals.

Ultrastructure & Microtubule Patterns Of A Detached Cellular Oganelle, Peggy Mervine

Masters Theses & Specialist Projects

In the axopod, the cell appendage of heliozoans, a bundle of microtubules runs the length of the organelle with a lateral pattern depending on the species. In the species under study, Echinosphaerium nucleofilum, these microtubules are arranged in a double spiral pattern. Axopodia can be detached and the purpose of this study was to refine the detachment procedure, work out electron microscopy techniques and scrutinize the detached axopodia for differences from the organelle of a whole organism. Detached axopodia were fixed, embedded, sectioned, observed under the electron microscope and found to be similar in ultrastructure to undetached ones. Thus, …

Agricultural Experiment Station News August 1980

Agricultural Research Division: News and Annual Reports

CONTENTS:
FROM THE ACTING DIRECTOR'S DESK
PERSONNEL ACTIONS
GRANTS AND CONTRACTS
GRANTSMANSHIP
PROJECTS APPROVED
THE BIOMETRICS AND INFORMATION SYSTEMS CENTER
NO TILLAGE AGRICULTURE
PERSONNEL ACTION
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - August 1980
BULLETINS PRINTED

Reproductive And Mutagenic Effects Of 5-Thio-D-Glucose Injections In Male Mice, Mus Musculus, Icr Strain, Mary E. Mcmanaway

Master's Theses

Adult male ICR mice of proven fertility were intraperitoneally injected daily with 60 mg/kg of 5-thio-D-glucose for 28 days. Body weights of treated male mice were unaffected during the experimental period. Relative testicular weights were significantly reduced at 121 days after initial injections in 5-thio treated males, but no significant decrease was observed at 28 days.

Onset of sterility was estimated to occur at approximately 4 weeks and persisted for 5 to 6 weeks after cessation of treatment at which time fertility was restored.

Beginning with the first injections and continuing for 121 days, the males were mated with untreated …

Proposal For The Conservation Of The Generic Name Picrodendron Grisebach (1859) Against Picrodendron Planchon (1846) (Euphorbiaceae), W. John Hayden, James L. Reveal

Biology Faculty Publications

Petalacte has been in continuous use for this genus of 1-3 species since proposed by D. Don. The only exception was Lessing's misuse of Petalolepis Cassini, from which he excluded the two original Australian species and substituted two from S. Africa. Lessing was not followed by later authors.T he genus was recently revised by Lundgren (in Bot. Notiser 127: 119-124. 1974) and this revision may be consulted for full references.

Analysis Of Single Sperm Acrosomal Enzymes In Genetic Toxicology, Steven Craig Johnson

Masters Theses

No abstract provided.

The Effects Of Photoperiod And Melatonin Injections On The Reproductive System Of Male Mice, Mus Musculus, Icr Strain, Margaret Ann Shugart

Master's Theses

The reproductive effects of long (24L:OD), natural (14L:lOD), and short (1L:23D) photoperiods were studied in the male mouse, Mus musculus, ICR strain. One third of the mice in each photoperiodic regimen were sacrificed after 45 days. Half of the remaining mice in each regimen received daily melatonin (5-methoxy-N-acetyl tryptamine) injections for 45 additional days. Body weights, testicular and accessory sex organ weights were measured and microscopic examinations of the testes were made. Plasma testosterone levels were determined using radioimmunoassay. Other organ (pituitary, kidney, adrenal, thymus, thyroid) weights were also obtained.

The Possible Influence Of Nestbox Size On Nesting Behavior And Reproductive Success In The House Wren (Troglodytes Aedon), Mary Anne Sydlik

Masters Theses

Recent studies (Lohrl 1973i Karlsson and Nilsson 1977) have shown that there may be a relationship between nestbox size and clutch size in several passerine species. The present study was designed to determine whether nestbox size influences the clutch size and reproductive success of House Wrens (Troglodytes aedon) and to test possible cues a female might utilize to assess the size of a given nestbox. Four types of nestboxes were used in the study; they varied in floor surface from 3 inches by 3 inches to 8 inches by 8 inches. No statistically significant differences in clutch size or reproductive …

Identification Of Fossil Wood From The Specimen Creek Area Of The Gallatin Petrified Forest, Yellowstone National Park, Montana, Tetsuya Yamamoto

Loma Linda University Electronic Theses, Dissertations & Projects

The petrified fossil forests in the Specimen Creek area of Gallatin Petrified Forest contain spectacular petrified tree stumps, trunks and logs in horizontal and vertical positions. These fossils forests are embedded in early middle Eocene volcaniclastic rocks and piled in sequential layers.

One hundred and nineteen fossil wood samples were collected from three selected layers [unit 1, unit 5 and unit 9, (DeBord 1977)] of the sequentially entombed Fossil Forests in the above area, and identified as follows: 3 families, 9 genera, in Gymnosperms; 13 families, 15 genera in Angiosperms.

PINACEAE: Keteleeria*, Larix*, Pinus, Tsuga*

PODOCARPACEAE: Podocarpus

TAXODIACEAE: Glyptostrobus*, Sequoia, …

An Analysis Of Salt Eating In Birds, Kathryn Julia Herson

Masters Theses

No abstract provided.

Pisolithus Tinctorius Mycobiont Inoculations As A Factor In Performance Of Containerized And Bare-Root Shortleaf Pine Seedlings On Lignite Minesoils In Panola County, Texas, Hoy Lee Bryson

Electronic Theses and Dissertations

The effects of artificial soil infestation with basidiospores and vegetative mycelia of the fungal symbiont Pisolithus tinctorius on ectomycorrhizae development of short leaf pine (Pinus echinata) seedlings grown in styroblock containers were tested in the greenhouse. These preliminary tests showed that both spores and mycelia will produce satisfactory ectomycorrhizae development. Various methods of inoculation had little effect on growth and development of containerized seedlings or on the accumulation of N, P, K, Ca, Mg, Na, Mn, Zn, or Cu in foliage and lateral roots. The styroblock containerization system used in conjunction with sandy loam soil/vermiculite (2:1 v/v) potting-mix produced excellent …

Comparison Of Three Mass Media For Communicating Forestry Information For Young People, Ross Lee Tomlin

Electronic Theses and Dissertations

A comparison of three mass media ( TV, radio and newspaper) was made to find which would be more effective at communicating forestry information to young people. The field study was conducted at Nacogdoches, Lufkin, and Kilgore High Schools in East Texas. Questionnaires given to students before and after exposure to six media spots tested forestry knowledge and attitudes. One spot in each medium presented a hardsell threat approach, the other a softsell-humorous approach. A final questionnaire measured student preferences of the media. Analysis of data indicated newspaper and TV to be the most effective media, with radio less effective. …

A Limnological Investigation Of A Tropical Fresh-Water Ecosystem: The Belize River, Belize, Central America, Victor J. Gonzalez

Dissertations

The limnology of the Belize River, from the region of Spanish Lookout to the region of Belize City, was investigated from 1977 through 1979. The investigation was done primarily during the months of May through August, covering the two seasonal changes--wet and dry--that occur in this tropical region. The investigation sought to describe various parameters of the Belize River so as to gain an understanding of this tropical fresh-water ecosystem and to provide basic information needed for the development of management programs.

Water samples were collected from eight stations and analyzed for acidity, alkalinity, carbon dioxide, chloride, sodium chromate, hexavalent …

State Of The Fisheries Report 1979, Department Of Fisheries And Wildlife, Western Australia

Status Reports of the Fisheries and Aquatic Resources

Western Australia has maintained its position as the top fishing State. The catch in Western Australia of fish, crustaceans and molluscs in 1978-79 was worth $91 million to the fishermen, which is 33 per cent of the total value for Australia.

Results Of The Alcoa Foundation-Suriname Expeditions. Iii. Chromosomal Data For Bats (Mammalia: Chiroptera) From Suriname, Rodney L. Honeycutt, Hugh H. Genoways, Robert J. Baker

University of Nebraska State Museum: Mammalogy Papers

Standard karyotypic data are presented for 28 species involving 98 specimens. The karyotype of Micronycteris sylvestris, M. daviesi, Phyllostomus latifolius, and Tonatia schulzi are reported for the first time. Chromosomal variation is described for Rhinophylla pumilio and Rhogeessa tumida. Karyotypes for the other species examined were like those previously described in the literature.

Results Of The Alcoa Foundation-Suriname Expeditions. 1. A New Species Of Bat Of The Genus Tonatia (Mammalia: Phyllostomatidae), Hugh H. Genoways, Stephen L. Williams

University of Nebraska State Museum: Mammalogy Papers

new species of the phyllostomatine genus Tonatia is described from Suriname. The species is characterized by medium size, the presence of small wart-like granulations of the dorsal surfaces of the forearm, digits, and hind limbs and on the ears and noseleaf, and possessing a unique karyotype. Two specimens of the species were taken in the rainforests of central Suriname.

Results Of The Alcoa Foundation-Suriname Expeditions. Ii. Additional Records Of Bats (Mammalia: Chiroptera) From Suriname, Stephen L. Williams, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

The occurrence of 14 species of bats previously unknown in Suriname are documented, making a total of 85 species of bats known to occur in the country. The new records include Pteronotus personatus, Chrotopterus auritus, Micronycteris daviesi, M. sylvestris, Phyllostomus latifolius, Choeroniscus godmani, C. intermedius, Lionycteris spurrelli, Mesophylla macconnelli, Vampyressa brocki, Vampyrops brachycephalus, Rhogeessa tumida, Molossops abrasus, and M. greenhalli. Additional information is provided on several species of bats already known to occur in Suriname, including Micronycteris minuta, M. nicefori, Phylloderma stenops, Tonatia …

Biology By The Numbers: [Dr. Joel E. Cohen], Fulvio Bardossi, Judith N. Schwartz

Rockefeller University Research Profiles

Rockefeller University Research Profiles are a series of scientific profiles that were published quarterly, from 1980-1990, by the Rockefeller University. Each issue features the research and achievements of an individual Rockefeller University scientist.

Interpopulational & Species Comparisons Of The Genus Liquidambar, Diana Duckworth

Masters Theses & Specialist Projects

Growth patterns under controlled conditions and chemotaxonomic techniques involving protein and flavonoid analysis were used to investigate both interpopulational and species comparisons in the genus Liquidambar. Striking differences in budburstinq patterns after a dormant period were seen when comparing L. styraciflua and L. formosana. The latter species showed earlier initiation of growth. Dormancy patterns of L. styraciflua grown under growth chamber conditions showed a latitudinal cline. Cessation of growth occurred later in a Georgia population under both long and short day experimental periods than populations from Missouri and Kentucky. When grown under controlled conditions, flavonoid patterns from L. …

A Review Of The Behavioural Mechanism Of Milk Ejection Of The Domestic Pig, David Fraser

Feeding Behavior Collection

The domestic pig has complex nursing and suckling behaviour, consisting of several distinct phases of suckling by the piglets and a characteristic pattern of grunting by the sow. A review of observations and experimental findings suggests cause-and-effect relationships between the different elements of sow and piglet behaviour, and the relationship of the behaviour to milk ejection. Characteristic features of pig nursing and suckling behaviour are interpreted as an adaptation promoting even distribution of milk among a number of precocious litter-mates.

Sampling Problems And Interpretation Of Chemical Analysis Of Mineral Springs Used By Wildlife, D. Fraser, E. Reardon, F. Dieken, B. Loescher

Habitat Assessment and Management Collection

Mineral-rich springs used by wildlife were studied in order to develop an appropriate sampling technique. The mineral content of the water varied spatially within a lick, apparently because of contamination by nonlick water and animal urine. The spring source usually could be located with a conductivity meter. Samples contaminated by animal urine could be recognized by their high N content and usually by their color. The distinctive chemical composition of licks is best appreciated by comparing filtered samples of lick water with nonlick water collected nearby. Field filtration was necessary when samples were preserved with acid for trace-metal analysis. Soil …

Meetings And Announcements

International Journal for the Study of Animal Problems

1. Meeting Report - Animals in Research
2. Announcement - Abstract exchange
3. New APHIS administrator
4. Newsletter on the Human-Companion Animal Bond
5. Veterinarians for Animal Protection
6. New editor for Equine Study Group
7. Bibliography of Animal Ethology

Definition Of The Concept Of ''Humane Treatment" In Relation To Food And Laboratory Animals, Bernard E. Rollin

International Journal for the Study of Animal Problems

The very title of this talk makes a suggestion which must be forestalled, namely the idea that laboratory and food animals enjoy some exceptional moral status by virtue of the fact that we use them. In fact, it is extremely difficult to find any morally relevant grounds for distinguishing between food and laboratory animals and other animals and, far more dramatically, between animals and humans. The same conditions which require that we apply moral categories to humans rationally require that we apply them to animals as well. While it is obviously pragmatically impossible in our current sociocultural setting to expect …

Nsmr: Its Image, Direction And Future, J. Russell Lindsey

International Journal for the Study of Animal Problems

The following speech was presented by Dr. Lindsey, Chairman of the University of Alabama Department of Comparative Medicine, at the Annual Board Meeting of the National Society for Medical Research (NSMR), Chicago, Illinois, November 10, 1979.

Farm, Ranch And Home Quarterly Institute Of Agriculture And Natural Resources, University Of Nebraska- Lincoln

Farm, Ranch and Home Quarterly

In this issue:

Facilities, Staff Benefit State......................... 2

Questions and Answers On Divorce....................... 3

Hassle-Free Guide to a Better Diet-Five Groups Aid in Wise Food Choices....................... 7

Enders Reservoir-Inflow Decline Poses Problem................ 8

Research Digest............................. 10

WEEDS-Identification Aids in Control ................... 12

1920-1980-60 Years of Tractor Testing ................... 14

Waste Recycling-A' Mountain' of Resources for Soil Improvement...................................... 18

Curriculum-Decision Making in Education........................ 22

New Directions in Research .............................. 24

1979 Hurricane Damage To Coral Reefs Of Vieques, Puerto Rico, Richard E. Dodge, William F. Raymond

Marine & Environmental Sciences Faculty Reports

No abstract provided.