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Transfer Of Fr Response Rate Bias To Fi Trained Guinea Pigs By Injection Of Brain Homogenate, Lief Carlsen

Undergraduate Honors Capstone Projects

In an attempt to delineate the physiological and/or chemical nature of the memory process, some researchers have reported that by introducing all or part of the brain of a trained animal into the bloodstream of another animal, the recipient thereby "acquires a tendency" to respond as the donor was trained. However, almost as many researchers have failed to obtain significant results.

Because many of the early experiments had less than optimum designs, their results were often equivocal. Critics frequently pointed out that perhaps increased learning efficiency was due merely to a sensitizing or stimulating effect of the injection and not …

Preliminary Observations On The Effects Of Treflan To Fishes, P. Bradley Latvaitis

Masters Theses

Treflan E.C. is a selective, preemergence, soil incorporated herbicide. Preliminary tests were made to evaluate its effects at concentrations of 0.75, 1.275 and 1.8 p.p.m. on twenty species of fresh water fishes in the laboratory. The herbicide was proven to be a powerful fish toxicant. Centrarchus, Cichlasoma centrarchus, was the most resistant fish tested, while Bluegill, Lepomis macrochirus, was among the least resistant. Treflan E.C. decomposes and degrades rapidly. It was also found to interact with plastics. Further studies are necessary to provide a complete investigation of the effects of Treflan on Fishes.

A Comparison Of Nocturnal Restlessness Of Caged Thrushes And Migration Of Free Thrushes, Charles Goodwin Kjos

Masters Theses

Nocturnal activity (Zugunruhe) of eight caged, radio-tagged thrushes (Hylocichla spp.) was compared by signal analysis with the occurrence of migration in 16 free, radio-tagged thrushes over a 37-night period during the autumn of 1970 in central Illinois. The study was conducted to determine the extent of synchrony of Zugunruhe and migration in these nocturnal migrants in fall. Zugunruhe frequently occurred on nights when there was no migration, but migration occurred only on nights when at least 50 per cent of the caged birds were active. Except for one departure which was atypical in several respects, migration occurred …

A Taxonomic Study Of Two Nominal Subspecies Of Pikas (Ochotona Princeps) In The Cascade Mountains Of Oregon, Richard M. Coots

Dissertations and Theses

Pikas from four colonies in the Cascade Mountains of Oregon were examined. Two colonies were chosen from within the geographical distribution of two nominal subspecies. A discriminate analysis of morphological measurements taken from the specimens showed that each colony could be distinguished from each other. Each colony studied showed more intra-colony similarity than inter-colony similarity regardless of distance separating the colonies or subspecies designations. The results indicate that the validity of subspecies designations for this species can be questioned.

End Matter, Vol. 15 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

New Records And Species Of Neotropical Bark Beetles (Scolytidae: Coleoptera) Part V, Stephen L. Wood

Brigham Young University Science Bulletin, Biological Series

The tribe Carphodicticini, the genera Carphodicticus, Periocryphalus, and Phelloterus, and 101 species are described as new to science. Notes on the habits of Cladoctonus boliviae (Wood), Mimips mimicus Schedl, and Styphlosoma granulatum Blandford are included; and the female of Styphlosoma granulatum Blandford is described. The species new to science include the following: Phrixosoma crebrum, P. frustratum (Colombia), P. viriosum, Chramesus macrocornis, C. orinocensis, C. strigilis, C. imporcatus, C. impolitus, C. parcus, C. denticulatus, C. priscus, C. vinealis, C. solicitatus, C. peniculus, ChaetophJoeus andinus, Liparthrum carapae, L. meridensis (Venezuela), Pycnarthrum inornatum, Pyc. funerium, Pyc. perditum (Honduras), Pyc. fici (Honduras, Venezuela), Pyc. …

Front Matter, Vol. 15 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Whole Issue Nebraska Bird Review (December 1971) 39(4)

Nebraska Bird Review

TABLE OF CONTENTS

A Comparison of Nesting Cover Utilized by Pheasants and Waterfowl .................66

First Specimen of Poor-will from Lancaster County A Summary of Poor-will Migration .................70

1971 Fall Field Day................. 71

The Dalton, Harrisburg, Kimball Triangle................. 72

Breeding Record of the Long-billed Marsh Wren from Lancaster County .................74

Revised Status of the Caspian Tern in Nebraska - A Summer Occurrence Record for Lancaster County .................75

Notes .................76

Index of Volume XXXIX .................78

The Constant Estrus Rat As A Source Of Viable Ova, John C. Drake

Morehead State Theses and Dissertations

A Thesis presented to the faculty of the School of Sciences and Mathematics at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by John C. Drake, Jr. on September 10, 1971.

End Matter, Vol. 14 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

End Matter, Vol. 14 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Front Matter, Vol. 14 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

A Flora From The Dakota Sandstone Formation (Cenomanian) Near Westwater, Grand County, Utah, Samuel R. Rushforth

Brigham Young University Science Bulletin, Biological Series

A Cretaceous (Cenomanian) flora from the Dakota Sandstone Formation near Westwater, Grand County, Utah contains an admixture of ferns and angiosperms. The ferns of this flora are representative of an older Jurassic-Wealden vegetational type, whereas the angiosperms are typical of the modern vegetational type. Species of Gleichenia and Matonidium and Astralopteris coloradica represent the dominant forms in this flora.

The Westwater flora contains fourteen genera including nineteen species and one variety. New species described from this flora include Asplenium dakotensis, Coniopteris westwaterensis and Ilex serrata.

Whole Issue Nebraska Bird Review (September 1971) 39(3)

Nebraska Bird Review

TABLE OF CONTENTS

Status of the Common Loon in Nebraska: A Summer Occurrence in Lancaster County................. 42

1971 (Forty-sixth Spring Migration and Occurrence Report................. 45

Some Interesting Summer Bird Records for Lancaster County in 1970 .................58

Activities of the Yellow-bellied Sapsucker in the Kearney, Nebraska Area .................60

Notes................. 62

In Memoriam .................64

Botanical And Physiographic Reconnaissance Of Northern British Columbia, Stanley L. Welsh, J. Keith Rigby

Brigham Young University Science Bulletin, Biological Series

The area of study is located in northern central British Columbia and includes the Sustut Basin and surrounding mountains. The physiography and geology of the region is described and the plant communities are enumerated. An annotated list of 205 species, 11 subspecies, and 35 varieties collected during the summer of 1969 is included.

Coexistence In Unisexual-Bisexual Species Complexes Of Poeciliopsis (Pisces: Poeciliidae), William S. Moore, Frances E. Mckay

Biological Sciences Faculty Research Publications

All-female forms of Poeciliopsis rely on males of closely related bisexual species for sperm. The natural habitat of Poeciliopsis in Sonora, Mexico, consists of a variety of small ponds connected by intermittent watercourses. Optimal areas, containing mixed female aggregates, are defended by territorial males. Social structure in natural populations very closely resembles that of laboratory experiments, wherein subordinant males show reduced mate discrimination and inseminate unisexuals.

An equation relating male density to unisexual inseminations is used in a computer simulation model of a population. A stable equilibrium is inherent in unisexual-bisexual species complexes but the level of equilibrium is affected …

Front Matter, Vol. 14 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

End Matter, Vol. 15 No. 2

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

A List Of Arthropods Of Medical Importance Which Occur In Utah With A Review Of Arthropod-Borne Diseases Endemic In The State, Vernon J. Tipton, Robert C. Saunders

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Front Matter, Vol. 15 No. 1

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

End Matter, Vol. 15 No. 1

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Front Matter, Vol. 15 No. 2

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Ticks Of Japan, Korea, And The Ryukyu Islands, Noboru Yamaguti, Vernon J. Tipton, Hugh L. Keegan, Seiichi Toshioka

Brigham Young University Science Bulletin, Biological Series

This publication is a revision of Ixodid Ticks of Japan, Korea, and the Ryukyu Islands by Keegan and Toshioka (1957). The tick fauna of these areas is represented by 36 species in the genera Argas, Ornithodoros, Amblyomma, Boophilus, Dermacentor, Haemaphysalis, Ixodes, and Rhipicephalus. Three species of the family Argasidae and 10 species of Ixodidae were not treated in the original edition. The additional information contained in this revision was derived from field collections and a thorough review of the literature. Keys are provided for the identification of genera and species. For each species we have given synonymy, a brief diagnosis, …

Kentucky Warbler (Vol. 47, No. 3), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

Comparative Anatomy And Histology Of The Mantle Cavity Of The Chitons (Polyplacophora) Mopalia Muscosa And Mopalia Lignosa, Theodore P. Winfield

Theses and Dissertations

The chiton Mopalia muscosa ranges from the open rocky coast to the bay environment, whereas the related chiton Mopalia lignosa is restricted to the outer rocky coast. The mantle cavity currents, anatomy and histology were investigated. Mucous gland cells of Mopalia muscosa are goblet type secretory cells. Their apparent ability to deliver their secretion rapidly together with having a short restitution period probably accounts for Mopalia muscosa having success at invading the bay environment. The mucous glands of Mopalia lignosa consist primarily of cells with medium to coarse secretory granules. These cells apparently are not as efficient at handling suspended …

Autoradiographic Studies Of The Distribution Of Serotonin In The Rat Brain, Brent D. Wagstaff

Theses and Dissertations

Serotonin (5-hydroxytryptamine, 5-HT), considered to be a synaptic transmitter within the central nervous system, has been shown to be localized mainly in the paleocortex of the brain. Others have shown disturbances of normal 5-HT metabolism to be associated with mental illness and disease. Attempts to inject tritium labelled 5-HT into cerebrospinal fluid of the rat brain for anatomical localization studies were·made. The following observations were noted, (1) there exists a perivascular space in which fluid flows and distribution is relatively uninhibited as compared to subarachnoid space, (2) the labelled 5-HT penetration of brain tissue parenchyma is restricted and radioactivity is …

Effect Of Exercise On Tissue Concentrations Of Thyroid Hormones And On Thyroxine Degradation Rate In The Rat, William W. Winder

Theses and Dissertations

Several methods were used to detect changes in thyroid activity and in degradation of thyroxine (T4) in exercising and sedentary control rats. Rats were run in a motor-driven exercise wheel over a three-week period at progressively increasing work loads and then were run 1.5-2 hours per day for 10-14 days before sacrifice. Disappearance of injected T4-125I from plasma was considerably enhanced by exercise. As determined by isotopic equilibration and paper chromatographic methods, T4 concentration was depressed in plasma and elevated in liver of exercised rats. No significant changes in T4 concentration were observed in heart, kidney, or gastrocnemius muscle. Thyroidal …

A Comparative Morphological Study Of Bryobia Rubrioculus (Scheuten) (Acarina: Tetranychidae), Robert Lee Frommer

Theses and Dissertations

A comparative morphological study of Bryobia rubrioculus {Scheuten} from 24 worldwide sites was made to determine if enough significant variation existed to designate the mites from each locale as an isolated population. Forty-seven characters were then selected and measured for each mite and analyzed with Ward's error sum cluster analysis procedures. These analyses led to the conclusion that: {1} B. rubrioculus tends to form distinct populations within each respective locale, and mites from locales that did not form clusters are possibly a result of automictic parthenogenesis and introductions from other areas; {2} B. rubrioculus is distinctly separate from Bryobia praetiosa …

A Comparative Study Of The Helminth Fauna Of Salmo Gairdneri Rich. From Three Different Environments: A Hatchery, A Lake And, A River, Jose Felipe Ribeiro Amato

Masters Theses

No abstract provided.

An Investigation Of The Behavior Of Citellus Townsendii Townsendii (Bachman) In Central Washington, Mark Roy Fuller

All Master's Theses

This study of the behavior of Citellus townsendii townsendii was based on field observations of animals at their northern most distribution. The squirrels' seasonal activity and behavioral repertoire, when considered with environmental parameters, suggest important adaptations for survival. The animals were in torpor from about July to February. Activity generally occurred during the midmorning hours, allowing them to avoid temperature extremes. Quantitative analysis of behavioral observations indicated that most activities occurred in a non-random order.