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Water Usage- Who Cares?: An Environmental Viewpoint, Harold G. Nagel

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

In answer to the rhetorical question, Water usage-who cares?, I considered listing the thousands of species of aquatic plants and animals that inhabit and depend upon the surface waters of Nebraska. But this would take too long, and I don't know them all anyway. However, I must defend the nonhuman species' rights to habitat. There are many frameworks to justify their continued existence: economic, aesthetic, and philosophic, to name a few.

Having been active in the environmental movement of the 70's in Nebraska, I can assure you that it has so diverse a following that I cannot possibly presume to …

The Brain: Physiological Foundations Of Evaluation And Memory, Jeff C. Schank

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

Behavioristic axiomatizations of human evaluation have been well established (von Newmann and Morgenstern, 1953; Leinfellner, 1969). The axiomatization of the evaluative interpretation scheme can be applied to the historical sciences and provides a model of historical time. Newtonian time can be defined by imposing a strict serial order on temporal events by means of the relations of simultaneity and succession, which has been axiomatized recently (Leinfellner, 1966). The former axiomatization of the structure of evaluation can be combined with the latter axiomatization of the structure of temporally ordered memory, based on preference and indifference relations of an individual as he …

New Dung Beetles At Work In Western Australia, T J. Ridsdill-Smith

Journal of the Department of Agriculture, Western Australia, Series 4

Two kinds od dung beetles are active in the agricultural areas of Western australia. In one group are the native beetles which are mainly active in winter, and in the other group are beetles introduced from overseas. The introduced beetles are mainly active in summer and have already produced some spectacular results

Grain Crop Variety Trials Western Australia 1978-1979, H. M. Fisher, G. B. Crosbie

Grain and other field crops research reports

The regional crop variety testing programme conducted by the Western Australian Department of Agriculture covers the final two stages of a four stage process of evaluating locally produced crossbreds and introduced material comprising:-

Plant Breeder Trials

Stage 1: Initial small plot yield tests on early generation material - 1 to 3 sites. Stage 2: Small plot yield tests on selected material (F5 derived) - 3 to 4 sites.

Regional Testing Programme

Stage 3: Large scale preliminary trials - 9 to 10 sites. Stage 4: Large scale final yield trials - 40 to 50 sites.

The basis of the regional programme …

Sand Dune Project Stabilises Erosion, Department Of Agriculture, Western Australia

Journal of the Department of Agriculture, Western Australia, Series 4

Read how the Department of Agriculture's Soil Conservation Service and the Department of Conservation and Environment worked with the Rockingham Shire to upgrade the road and protect the sand dunes.

Investigations Of Ryegrass Toxicity, B A. Stynes

Experimental Summaries - Plant Research

Development of toxicity in the field. Experiment – 79KA13. Location – C. Butterworth, Katanning. The effect of herbicides and growth regulants on gall development. Experiment – 79KA14. Location - C. Butterworth, Katanning. Effect of burning on the production of galls. Experiment – 79KA9. Location - L. Blight, Gnowangerup; K. Butterworth, Katanning; C. Hanna, Katanning; J. Shepherdson, Gnowangerup. Table 1 Previous land use and characteristics of fires at four farms where fields were burnt in autumn to reduce the level of toxicity of ryegrass in the subsequent spring pasture. Table 2 The numbers and relative proportions of galls retained in the …

Photoelectric Properties And Detection Of The Aromatic Carcinogens Benzo[A]Pyrene And Dimethylbenzanthracene, William A. Houle, Hugh M. Brown, O. Hayes Griffith

Department of Biochemistry: Faculty Publications

The absolute photoelectron quantum yield spectra for benzo[ajpyrene and dimethylbenzanthracene are presented in the wavelength range 180-230 nm. These polycyclic aromatic carcinogens have photoelectron quantum yields of approximately 2 X 10^-3 electrons per incident photon at 180 nm. The quantum yields fall off quickly and monotonically at wavelengths longer than 210 nm (5.9 eV). Threshold values for benzo[a]pyrene and dimethylbenzanthracene are 5.25 ± 0.06 eV and 5.27 ± 0.04 eV, respectively. The photoelectron quantum yields of benzo[a]pyrene and dimethylben-zanthracene are several orders of magnitude greater than typical components of biological membranes (amino acids, phospholipids, and polysaccharides). Preliminary micrographs of …

Glucocorticoid Modulation Of Casein Gene Transcription In Mouse Mammary Gland, Ranjan Ganguly, Nozer M. Mehta, Nivedita Ganguly, M. R. Banerjee

School of Biological Sciences: Faculty Publications

The influence of cortisol and prolactin on casein gene expression in the mammary gland of lactating BALB/c mice was measured by using a specific cDNA probe to 15S casein mRNA (cDNA_csn). Casein mRNA (mRNA_csn) level in the mammary gland was decreased by 85% 5 days after adrenal ablation, but then was increased 4.4-fold 12 hr after a single injection of hydrocortisone-21-acetate. An 80% decrease in serum prolactin level, induced by the prolactin inhibitor 2- bromo-α-ergocryptin (CB-154), did not alter the level of mRNA_csn in the gland. Specific transcription of the casein gene in nuclei isolated …

Neoplastic Transformation Of Epithelial Cells In Whole Mammary Gland In Vitro, Nityanand T. Telang, Mihir R. Benerjee, Anand P. Iyer, Amit B. Kundu

School of Biological Sciences: Faculty Publications

Biological characteristics of nodule-like alveolar lesions (NLAL) induced by 7,12-dimethylbenz[a]anthracene (DMBA) in organ culture of whole mammary gland (BALB/c female mice) were assessed after transplantation into gland-free mammary fat pads of syngeneic virgin mice. (i)Tissue- fragment explants from NLAL areas of the gland produced abnormal lobuloalveolar (LA) outgrowths in 3 of 10 fat pads. (ii) Transplantation of dissociated cells of NLAL-derived LA outgrowths into 36 fat pads showed 100% LA outgrowths and 3 (8%) of these 36 outgrowths produced mammary carcinomas. (iii) The explants of dissociated cells from whole mammary glands treated with DMBA …

Nocturnal Pollination Of Abronia Fragrans (Nyctaginaceae), Kathleen H. Keeler, Myra S. Fredricks

School of Biological Sciences: Faculty Publications

Abronia fragrans Nutt. (Nyctaginaceae) is a white-flowered herb of dry sandy soils from Idaho and South Dakota to Arizona and Texas. It can be readily observed to fit a night-blooming, moth-pollinated syndrome (Faegri and van der Pijl, The principle of pollination ecology, 1971). This does not seem to have been noted: in all references to A. fragrans we could find, the only indication of nocturnal anthesis was the comment of Nelson (Handbook of Rocky Mountain plants, 1969), who observed that the fragrance was more noticeable at night. Tillett (Brittonia 19:299-327, 1967), working on Pacific species, suggested that the …

Scanning And Transmission Electron Microscopy Of The Oocyst Wall Of Isospora Lacazei, Clarence A. Speer, Alan A. Marchiondo, Bodo Mueller, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The oocyst wall of Isospora lacazei from sparrows was studied with scanning (SEM) and transmission (TEM) electron microscopy. In TEM, t he oocyst wall consisted of four distinct layers (Ll-4). The innermost layer, Ll, was moderately electron-lucent and 240-285 nm thick; L2 was electronJense and 210-240 nm thick; L3 was moderately electron-lucent and 15-150 nm thick; L4, the outer most layer, was discontinuous and consisted of electron-dense discoid bodies which measured 180-220 nm x 320-840 nm. The discoid bodies of L4 as seen by TEM appeared spheroid in shape when observed by SEM. One or two membranes were situated on …

Endoparasites, John E. Ubelaker, Robert D. Specian, Donald W. Duszynski

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The leaf-nosed bats of the New World family Phyllostomatidae occur from the southwestern United States through tropical Central and South America. Members of this family are also found throughout the Antilles. The ecological associations of the species in this family seem to be rather broad; species are found in humid tropical to semiarid and arid subtropical environments. Diversity in feeding is readily apparent ranging from nectivores (Glossophaga), frugivores (Artibeus), sanguivores (Desmodus), to omnivores (Phyllostomus) (see review by Glass, 1970; Gardner, this volume).

To understand better the biology of phyllostomatid bats, it is …

Differentiation Of Fourth And Early Fifth Stages Of Parascaris Equorum (Goeze, 1782) Nematoda: Ascaridoidea, P. A. Pilitt, J. R. Lichtenfels, P. A. Madden

Harold W. Manter Laboratory of Parasitology: Faculty Publications

The morphology of Parascaris equorum of horses was studied; light and scanning electron microscopy were used. Late fourth-stage larvae have narrow, rectangular lips bearing few, large. triangular, irregularly spaced denticles and the lips are not markedly set off from the body. The cutick of the late fourth stage is completely transversely striated, with incomplete longitudinal ridges creating a brickwork pattern; longitudinal alae are present. Total body lengths of fourth-stage larvae range from 10 to 32 mm. A single molting fourth-stage male was found to be 33 mm long. Early fifthstage nematodes have wide, trilobate lips with a deep transverse groove …

Paravitellotrema Overstreeti Sp. N. (Digenea: Hemiuridae) From The Colombian Freshwater Stingray Potamotrygon Magdalenae Dumeri, Daniel R. Brooks, Monte A. Mayers, Thomas B. Thorson

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Paravitellotrema overstreeti from the freshwater stingray Potamotrygon magdalenae in northern Colombia most closely resembles P. thorsoni by possessing a muscular sinus organ and sinus sac as well as exhibiting a saccate rather than elongate prostatic vesicle, It differs by possessing lobate rather than spherical vitellaria, a smaller sinus organ and sinus sac, elongate rather than diamond-shaped prostatic cells enclosed in a delicate membrane rather than free in the parenchyma, and a metraterm joining the hermaphroditic duct immediately anterior to the prostatic vesicle rather than at the base of the sinus organ,

Neopronocephalus Orientalis Sp. N. (Digenea: Pronocephalidae) And Spirhapalum Elongatum Rohde, Lee, And Lim, 1968 (Digenea: Spirorchiidae) From Cuora Amboinensis (Daudin) In Malaysia, Daniel R. Brooks, James R. Palmieri

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Neopronocephalus orientalis from Cuora amboinensis in Malaysia most closely resembles N. spinometraterminis from Kachuga tectum tentoria in India by possessing postovarian cecal tips and an average of more than 30 vitelline follicles, but differs by having equatorial rather than preequatorial testes which are mostly intercecal rather than extracecal and a slightly smaller cirrus sac, Neopronocephaius spinometraterminis purportedly has spines in the metraterm and a common genital pore, whereas N . orientalis exhibits nonstaining wrinkled epithelium lining the metraterm and separate genital pores. Spirhapalum elongatum was also collected from its type host near the type locality.

New Records For Amphibian And Reptile Trematodes, Daniel R. Brooks

Harold W. Manter Laboratory of Parasitology: Faculty Publications

From 1975 to 1978, 200 amphibians and reptiles from localities in Nebraska, Arkansas, Oklahoma, Louisiana, Mississippi, Florida, North Carolina, and West Virginia were examined for trematode parasites. This report provides additional information concerning the geographical distribution of North American amphibian and reptile trematodes. Some results have already been published (Brooks and Fusco, 1978, J. Miss. Acad. Sci. 23:95-99). Worms, removed from their hosts, were examined alive when possible, and fixed with AFA after flattening with slight coverslip pressure. Specimens were stored in 7{)1lO ethanol, then stained with Mayer's hematoxylin and mounted in Histoclad or Canada balsam for study as whole …

Order Anseriformes: From Check-List Of Birds Of The World, Paul A. Johnsgard

Paul Johnsgard Collection

SUBORDER ANSERES
FAMILY ANATIDAE

SUBFAMILY ANSERANATINAE
GENUS ANSERANAS LESSON

SUBFAMILY DENDROCYGNINAE
GENUS DENDROCYGNA SWAINSON

GENUS THALASSORNIS EYTON

SUBFAMILY ANSERINAE
GENUS CYGNUS BECHSTEIN

GENUS ANSER BRISSON

GENUS BRANTA SCOPOLI

GENUS CEREOPSIS LATHAM

GENUS STICTONETTA REICHENBACH

SUBFAMILY TADORNINAE
GENUS CYANOCHEN BONAPARTE

GENUS CHLOEPHAGA EYTON

GENUS ALOPOCHEN STEJNEGER

GENUS TADORNA FLEMING

GENUS TACHYERES OWEN

SUBFAMILY ANATINAE
GENUS PLECTROPTERUS STEPHENS

GENUS CAIRINA FLEMING

GENUS PTERONETTA SALVADORI

GENUS SARKIDIORNIS EYTON

GENUS NETTAPUS BRANDT

GENUS CALLONETTA DELACOUR

GENUS AIX BOlE

GENUS CHENONETTA BRANDT

GENUS AMAZONETTA BOETTICHER

GENUS MERGANETTA GOULD

GENUS HYMENOLAIMUS GRAY

GENUS ANAS LINNAEUS

GENUS MALACORHYNCHUS SWAINSON

GENUS MARMARONETTA REICHENBACH

GENUS RHODONESSA REICHENBACH

GENUS NETTA …

Sperm Morphology, G. Lawrence Forman, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

Bishop and Austin (1957) in their study of variation in mammalian spermatozoa suggested that the sperm of each mammalian species was probably unique. Although complete volumes have been written on the ultrastructure of spermatozoa (for example Baccetti, 1970), particularly of humans and domestic animals, there is still relatively little information available on the comparative gross morphology of spermatozoa. McFarlane (1963), Forman (1968), and Forman et at. (1968) made significant contributions to our understanding of the use of sperm morphology in establishing systematic and phylogenetic relationships of birds and mammals. However, there have been very few similar studies published to this …

Morphometrics [Of Phyllostomatid Bats], Pierre Swanepoel, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

In this paper, we have attempted to cite all relevant literature in which mensural
data pertaining to phyllostomatid bats has appeared. We are not so naive as to
believe this goal was reached, but we do believe most pertinent publications
are listed, including all major works relating to each species. This information
serves as a summary of what currently is known concerning morphometrics of
phyllostomatids and hopefully provides a basis for future morphometric studies
of members of the family.

Introduction: Harold W. Manter And Parasitology, Franklin Sogandares-Bernal

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Introductory remarks given by Franklin Sogandares-Bernal of Southern Methodist University at a symposium held at the University of Nebraska-Lincoln, Lincoln, Nebraska, U.S.A., October 5-7, 1977, on host-parasite interfaces. An overview of the career of American parasitologist Harold Winfred Manter, whose career was spent as a professor at the University of Nebraska-Lincoln, is presented.

Dedication In Host-Parasite Interfaces, Edited By Brent B. Nickol, Brent B. Nickol

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Dedication in Host-Parasite Interfaces, edited by Brent B. Nickol, proceedings of a symposium held at the University of Nebraska-Lincoln, Lincoln, Nebraska, U.S.A., October 5-7, 1977.

Sexual Dimorphism, Resource Partitioning And Intraspecific Aggression In Caprella Californica Stimpson, Ian D. Campbell

University of the Pacific Theses and Dissertations

The Caprellidae are a specialized suborder of Amphipoda, which are highly modified for a semisessile life. Caprellids exhibit direct development and brood their young. The suborder is exclusively marine and commonly found on filamentous algae, sea grasses and fouling communities. Most published works on caprellids have been primarily concern~d with systematics (Caine, 1974; Dougherty, 1943; Laubitz, 1970, 1972; McCain, 1968, 1975), although a few recent studies have dealt with ecology and ethology (Bynum, 1978; Caine, 1977; Keith, 1969, 1971; Lewbel, 1978; Saunders, 1966).

This study examines·spatial and temporal variations in distribution, abundance and population structure as well as describing intraspecific …

Fertilizing Capacity And Ultrastructure Of Fowl And Turkey Spermatozoa Before And After Freezing, M. R. Bakst, T. J. Sexton

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

The fertilizing capacity, motility and ultrastructure of fowl and turkey spermatozoa were examined at various stages of the freezing process. For both species, fertility and motility were depressed after equilibration with dimethylsulphoxide at 5 °C. After freezing, motility was maintained at 55% for fowl spermatozoa and 40% for turkey spermatozoa; however, fertility was 55% for the fowl and 0% for the turkey. Qualitatively, the damage to the spermatozoa of both species was nearly identical, as revealed by scanning and transmission electron microscopy. The plasmalemma was the primary site of damage. 'Bent' spermatozoa, coiled tails and swollen mitochondria were also present. …

Uterine Blood Flow Of Cows During The Oestrous Cycle And Early Pregnancy: Effect Of The Conceptus On The Uterine Blood Supply, S. P. Ford, J. R. Chenault, S. E. Echternkamp

United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications

Blood flow to each uterine horn of cows during the oestrous cycle and early pregnancy was determined daily by use of electromagnetic blood flow probes placed around both middle uterine arteries. The pattern of blood flow to uteri of pregnant and non-pregnant cows was similar until Day 14 after mating or oestrus. Between Days 14 and 18 of pregnancy blood flow to the uterine horn containing the conceptus increased (P < 0.01) 2- to 3-fold, whereas blood flow to the non-gravid uterine horn in these cows remained constant. No corresponding increase in blood flow to the uterine horn ipsilateral to the ovary bearing the CL was observed in non-pregnant cows during this 4-day period. By Day 19 of pregnancy, blood flow to the gravid uterine horn had returned to a level similar to that observed on Day 13. Blood flow to both uterine horns of pregnant cows remained constant from Days 19 to 25 and then increased to the gravid horn (P < 0.01) markedly until Day 30 whereas blood flow to the non-gravid horn remained low. Uterine blood flow during the oestrous cycle of non-pregnant cows was positively correlated (P < 0.01) with systemic concentrations of oestradiol and the ratio of oestradiol (pg/ml) to progesterone (ng/ml). There was no association between oestradiol concentrations and blood flow to the gravid uterine horn. These data indicate local control of uterine blood flow by the bovine conceptus which may function to create optimal conditions for the continuation of pregnancy.

Potential Use Of Hydroelectric Facilities For Manipulating The Fertility Of Lake Mead, Larry J. Paulson, John R. Baker, James E. Deacon

Publications (WR)

Analysis of historical nutrient data for Lake Mead indicates that the fertility of the reservoir has decreased which may be the cause for a corresponding decline in the largemouth bass population. However, it appears that fertility can be manipulated by altering the operation of the dam. The depletion of nutrients in the euphotic zone by phytoplankton and subsequent accumulation in the hypolimnion during summer and fall provide a natural nutrient gradient from which water of varying fertility can be drawn for discharge. This combined with alterations in the depth or seasonal pattern of discharge can possibly be used to enhance …

Changes In Gall Bladder Bile Throughout Development In Rana Catesbeiana, Stanley G. Carson

University of the Pacific Theses and Dissertations

The present study of Rana catesbeinana includes an analysis of the following throughout the course of post-embryonic development: the change in GI tract length and weight; the relative surfactant activity of the bile; the change in major bile pigments. The most rapid and profound morphological and physiological transitions occur during the period of metamorphic climax. Because no information relative to change in anurans is available during this period, particular emphasis is placed upon the examination of individuals during metamorphic climax.

A Quantitative Study Of The Morphology Of Normal, Hyperplastic, And Neoplastic Mammary Tissue In The Mouse, Elizabeth J. Hill

University of the Pacific Theses and Dissertations

This study intends to provide a quantitative and qualitative histological account of two aspects of mammary gland morphology. First, the normal mouse during different functional phases including inactivity, pregnancy, lactation and involution is presented. Second, the abnormal changes of mammary hyperplasia and neoplasia - both spontaneous and exogenous - are examined.

Morphological Comparison Of Two Populations Of Peromyscus Maniculatus Gambelii From The Timberline Of Mt. Shasta, California, Craig Steven Marks

University of the Pacific Theses and Dissertations

The purpose of this study is to compare two populations of Peromyscus maniculatus gambelii from the same location, separated by about 80 years in an attempt to determine the degree of dissimilarity between them.

Habitat Utilization And Partitioning Within A Community Of Nesting Grassland Birds, John E. Buhnerkempe

Masters Theses

No abstract provided.

Siderocapsa Major-- Fact Or Artifact?, Ray W. Swanson

Masters Theses

The validity of the genus Siderocapsa, a group of unicellular iron-depositing bacteria, has been a subject of debate for many years. Lack of photomicroscopic and cultural studies has kept this group in taxonomic obscurity. Bacteria were collected from the Campus pond, Eastern Illinois University, Charleston, Illinois, by a submerged slide/coverslip technique. These bacteria were identified as Siderocapsa major according to the description of Molisch (1909). Scanning electron microscopy of Siderocapsa major microcolonies has shown cells (0.5 by 1.15 μm), in a clear central well (2-6 μm), surrounded by an amorphous material which accumulates with the age of the colony. …