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Phosphorylated Β-Guanidinopropionate As A Substitute For Phosphocreatine In Rat Muscle, Coy D. Fitch, Max Jellinek, Robert H. Fitts, K. M. Baldwin, J. O. Holloszy

Biological Sciences Faculty Research and Publications

To evaluate phosphorylated β-guanidinopropionate (β-GPAP) as a substitute for phosphocreatine (PC), hypoxic tibialis anterior muscles were stimulated to contract isometrically in situ until twitch tension fell to 25% of the peak value. Muscles from rats fed β-guanidinopropionic acid (β-GPA) failed to exhibit the staircase phenomenon, and they developed 28% less tension than control muscles. In control muscles lactate increased from 0.75 to 20.99, ADP increased from 0.89 to 1.20, ATP decreased from 5.09 to 2.73, and PC decreased from 15.78 to 1.52 μmol/g. In muscles from rats fed β-GPA, lactate increased from …

Eatonia No. 20, May 05, 1975, William L. Peters, Janice Peters

Eatonia

Eatonia was a newsletter established to facilitate communication among scientists working on a group of aquatic insects in the order Ephemeroptera, more commonly known as mayflies. The newsletter is named after Rev. Alfred E. Eaton who studied mayflies in England in the late 1800’s and is considered the “father” of the modern classification of mayflies.

Actions Of Mammalian Gonadotrophins In Female Anolis Carolinensis (Green Anole) Within Selected Parameters Of Photoperiod And Temperature, Frank Loving Holt Jr.

Master's Theses

The effects of either porcine FSHt equine LH, or both combined upon the pregametic a.nd gametic phases of the ovarian cycle of Anolis carolinensis {green anole)were investigated in animals maintained under one of three photothermal. regimens: 3 hours light at 15 C; 14 hours light at 15 C; or 14 hours light at 32 C.

Increases in pre-vitellogenic follicle diaaeter and ovarian weight were significantly greater at 32 C than at 15 c. A trend towards decreased numbers of atretic follicles with increased gonadotrophin dosage occurred in response to 14 hours light at 32 C. Gonadotrophin dosages which stimulated vitello­ …

Effects Of The Toxins Of Lophopodella Carteri (Ectoprocta), On Blood Lactate And Electrolytes Of Lepomis Macrochirus (Bluegill), Robert Fisher Dance

Master's Theses

Specimens of bluegill (Lepomis macrochirus) were exposed to homogenates of Lophopodella carter, an ectoproct that contains substances toxic to some gilled vertebrates. The homogenates caused significant decreases in blood Na+ and Cl - and a significant increase in lactate. Potassium levels were unaffected. It is proposed that these changes in blood. properties were caused by damage to ion transport mechanisms of the gill epithelium.

Net Primary Production Of Spartina And Species Diversity Of Associated Macroinvertebrates Of A Semi-Impounded Salt Marsh, Larry Alan Chynoweth

Retrospective Theses and Dissertations

No abstract provided.

A Serological Survey Of Greater Orlando Human, Canine, And Feline Populations For The Presence Of Antibodies To Toxoplasma Gondii, John Louis Weihe

Retrospective Theses and Dissertations

Toxoplasma gondii, the etiological agent of toxoplasmosis, was first discovered in Ctenodactylus gondi, an small North African rodent, by Nicolle and Manceaux in 1908. Later the same year Splendore observed the organism in a laboratory rabbit. Human infection was first reported by Janku in 1923. Since its discovery, many investigations have shown the organism to be truly unique in the protozoan world. There appears to be only one species and only one serotype. Serologic and microscopic studies reveal Toxoplasma to have a vast host range. At least one representative of virtually every mammalian species tested harbored the parasite or showed …

An Immunological Approach To The Study Of The Tumorous-Head Trait In Drosophila Melanogaster, Patricia Neuhaus Weihe

Retrospective Theses and Dissertations

No abstract provided.

The Morphology Of The Eye Of The Purple Shore Crab, Hemigrapsus Nudus, Sharon E. Heisel

Dissertations and Theses

A structural analysis of the compound eye of Hemigrapsus nudus expands the basis of functional analysis of decapod Crustacean eyes. Contradictory evidence for disintegration of rhabdomeric microvilli in the absence of light prompted observation of H. nudus eyes after 146 days in darkness.

Eyes were fixed with formalin and glutaraldehyde and post fixed with osmium tetroxide for electron and light microscopy. Light- dark-adapted eyes were also observed with hot water fixation and paraffin embedment.

The eye of H. nudus is typical of decapod Crustacean compound eyes. Corneagenous cells underlie the transparent cuticle cone cells secrete the composite crystalline cone which …

Immunological Studies Of The Host Parasite Relationship Of Dirofilaria Immitis In Domestic Canines, Douglas Felton Qualls

Retrospective Theses and Dissertations

Canine immunoglobulins of the IgG group were shown to be intimately associated with the cuticle of circulating non-infection Dirofilaria immitis microfilaria. The significance of these immunoglobulins in blocking a complete immune response in the definitive host is discussed. Immunodiffusion, immunoelectrophoresis and fluorescent inhibition techniques are described and their applicability to the study of host-parasite relationships are evaluated. A rapid reproducible method for the production of specifically labeled anti-D. immitis microfilaria globulins is presented.

Comparison Of Laboratory Rhythms In Several Species And Genera Of Ants, Siu-Ming A. Soong

Loma Linda University Electronic Theses, Dissertations & Projects

Few simultaneous comparative studies of functional diversity have been made at the genus level. Four genera (Pogonomyrmex, Veromessor, Formica, Myrmecocystus) of ants were compared, two of them represented by two species each. Under controlled temperatures, in alternating light and dark, there was more difference in phase of rhythm among than within genera. This evidence adds to previous field evidence for a taxonomic explanation of such diversity in ants.

The Uptake, Distribution, And Depuration Of ¹⁴C Benzene In Northern Anchovy (Engraulis Mordax) And Striped Bass (Morone Saxatilis), Nina Day Hirsch

University of the Pacific Theses and Dissertations

The uptake, distribution and depuration of a water soluble, mono-aromatic hydrocarbon contained in petroleum and refined products was studied in two species of marine fish, Nature northern anchovy (Engraulis mordax) and juvenile striped bass (Horone saxatilis) were exposed to sub-lethal concentrations of ¹⁴c benzene for 48 hours. Residues in tissues exhibiting a high lipid content (non-metabolic pathway) or representing apparent major metabolic sites were measured during the exposure and afterwards when the fish were transferred to clean seawater. Fish exhibited a rapid uptake over a wide range of benzene concentrations in the water column. Accumulation in anchovy was considerably …

Isozyme Patterns In The Life-Cycle Of The Free-Living Nematode, Panagrellus Silusiae, Mary Ilze Brokans

Master's Theses

No abstract provided.

Localized Responses Of The Ventricular Myocardium To Stimulation Of Ventral Roots, Jeanne E. Norris

Dissertations

No abstract provided.

Reproductive Ecology And Population Dynamics Of Two Sympatric Species Of Macoma (Bivalvia), John Gibson Rae Iii

University of the Pacific Theses and Dissertations

Populations of the sympatric intertidal bivalves, Macoma secta and M. nasuta are compared as to reproductive ecology and population dynamics. Histological examination of seasonal gonadal changes indicate that both species undergo dormancy in the winter months and rapid gamete proliferation in the spring. However, the timing of spawning differs. The M. secta population synchronously spawned in August while the M. nasuta population spawned lightly in late spring and more heavily in the fall. Fecundity estimates indicate M. nasuta adds 140% of winter weight in gametes and M. secta only adds 43% of winter weight in gametes. Spat fall was detected …

The Effect Of Calcium Sulfide On The Hactchability Of Chironomous Riparius Meigen Eggs, Gerald S. Wegner

Master's Theses

No abstract provided.

The Effect Of Nematode Age On Trap Formation In The Nematophagous Fungus Arthrobotrys Conoides, Mary Lou Tortorello

Master's Theses

No abstract provided.

The Effects Of Language On The Mediation Of Temporally Based Concepts With Deaf And Blind Children, Gregory Doyle

Master's Theses

No abstract provided.

Thermal And Hypoxic Induced Alterations Of Selected Red Cell Organophosphates In The Female Fresh-Water Turtle, Pseudymys Scripta Elegans, Daniel Culking

Master's Theses

No abstract provided.

Parasitic Copepods Of Chinook, Oncorhynchus Tshawytscha (Walbaum), And Coho, Oncorhynchus Kisutch (Walbaum), Salmon Of Lake Michigan, Joseph K. Buttner

Master's Theses

No abstract provided.

The Teratogenic Potential Of Sodium Dodecylbenzene Sulfonate Upon Icr Cd-1 Strain Of Mice, Raymond M. David

Master's Theses

No abstract provided.

Cuticular Amino Acids In Dirofilaria Immitis, Bonnie Anne Ozuk

Master's Theses

No abstract provided.

Distribution And Effects Of Bacterial Endotoxin, Anne Carter Adams

Theses and Dissertations

In this study the distribution and effects of bacterial endotoxin were examined. Adult male BALB/c and adult male DUB/ICR mice were used in all experiments. Endotoxic activity of a number of strains from three genera of bacteria, Pseudomonas, Bacteroides, and Listeria, was detected using vincristine-treated mice as sensitized indicators for endotoxin and resistance to purified endotoxin induced by pretreatment with selected bacteria. Also, the effect of bacterial endotoxin and endotoxin-like substances on the course of primary amebic meningoencephalitis in mice, caused by Naegleria fowleri, was assessed.

Food Habits Of The Game Fishes Of Lake Anna, Virginia, Thomas Kenneth Rohrer

Theses and Dissertations

Beginning in May, 1973 and continuing through August, 1974 the food habits of several species of game fishes from Lake Anna, Virginia were investigated via gut content analysis. A variety of collecting methods were employed to secure specimens for examination and stomach contents were reported as percent frequency of occurrence. A total of one hundred and two collections were made yielding 287 largemouth bass, Micropterus salmoides (Lacépède); 166 chain pickerel, Esox; niger LeSueur; 53 bluegill, Lepomis macrochirus Rafinesque; 32 pumpkinseed, Lepomis gibbosus (Linnaeus); and 63 black crappie, Pomoxis nigromaculatus (LeSueur). It was found that M. salmoides and E. niger were …

Toxoplasma Antibodies In Wild And Domiciled Animals From Arizona, Colorado, Montana, New Mexico, And The Philippines, Alan A. Marchiondo

Biology ETDs

Using the Sabin-Feldman Dye Test, sera from wild and domestic animals in Arizona, Colorado, Montana, New Mexico, Peru, and the Philippines were tested for the prevalence of antibodies to Toxoplasma gondii. The incidence of Toxoplasma in all animals from these areas was: Arizona (19.6%, 11 of 56), Colorado (28.6%, 2 of 7), Montana (41.7%, 73 of 175), New Mexico (31.3%, 178 of 569), Peru (0%, 0 of 3), and the Philip­pines (33.8%, 48 of 142). The overall prevalence of antibodies to Toxoplasma was 32.7% (312 of 952).

Nine fecal samples from wild felines contained Toxoplasma like oocysts which were experimentally …

Role Of Melatonin In Hibernation And Isolated Heart Activity, Dennis L. Palmer

Biology ETDs

Melatonin functions in the control of melanophore pigmentation of amphibians but its role in higher vertebrates is ill-defined. In mammals melatonin is produced within the pineal gland, where its formation is light dependent. This study consisted of three experiments: (i) a biological assay of commercial preparations of melatonin; (ii) response of hibernating ground squirrels exposed to cold and melatonin; (iii) response of isolated hearts to melatonin. Commercial preparations of melatonin were compared for their biological effectiveness by measuring the inhibition of compensatory ovarian hypertrophy in laboratory mice. Unilateral ovariectomy results in hypertrophy of the intact ovary of untreated mice. Unilaterally …

Effect Of "Stressors" On Corticosteroid-Binding Globulin Activity In The Rat During Pregnancy, Muhammad Nasir Hussain

Masters Theses

No abstract provided.

The Α-Glycerophosphate Cycle In Drosophila Melanogaster Iv. Metabolic, Ultrastructural, And Adaptive Consequences Of Αgpdh-1 "Null" Mutations, Stephen J. O'Brien, Yoshio Shimada

Biology Faculty Articles

"Null" mutations previously isolated at the αGpdh-1 locus of Drosophila melanogaster, because of disruption of the energy-producing α-glycerophosphate cycle, severely restrict the flight ability and relative viability of affected individuals. Two "null" alleles, αGpdh-1^BO-1-4, and αGpdh-1^BO-1-5, when made hemizygous with a deficiency of the αGpdh-1 locus,Df(2L)GdhA, were rendered homozygous by recombination with and selective elimination of the Df(2L)GdhA chromosome. After over 25 generations, a homozygous αGpdh-1^BO-1-4stock regained the ability to fly despite the continued absence of …

Anatomical Specimens From Preserved Animal Discards, Harry L. Fierstine, Myron A. Amerine, Kathleen L. Bek

Biological Sciences

No abstract provided.

Bulletin No. 20: Tidal Marsh Invertebrates Of Connecticut, Nancy C. Olmstead, Paul E. Fell

Bulletins

36 pp. 1974. Descriptions and illustrations of over 40 species of mollusks, crustaceans, arachnids and insects found on our tidal marshes.

The Effects Of Temperature & Photoperiod On Molting Patterns Of Seasonal Populations Of The Crayfish, Orconectes Immunis (Hagen), Michael Molley

Masters Theses & Specialist Projects

Ninety-day experiments were initiated in January (Expt. 1), June (Expt. 2), and October (Expt. 3) 1972, to characterize molting patterns of Orconectes immunis (Hagen) at three different temperatures (20 C, 24 C, and 28 C) and three different photoperiods (6 L, 15 L, and continuous light). For each experiment 144 animals were collected from the seasonally predominate size class of that period. Light intensity was regulated to 15 foot candles + 10. Experimental conditions were arranged in a 3 x 3 design for statistical analysis using a completely randomized design with factorial arrangement of treatments.

In all cases molting frequency …