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Articles 1021 - 1043 of 1043

Full-Text Articles in Biology

Food Habits Of Dicamptodon Ensatus And Associated Fish Species Of Maratta Creek, Washington, Authur L. Antonelli Aug 1969

Food Habits Of Dicamptodon Ensatus And Associated Fish Species Of Maratta Creek, Washington, Authur L. Antonelli

All Master's Theses

Three cold-blooded vertebrates, Dicamptodon ensatus, Cottus tenuis, and Salmo gairdneri were investigated as to food habits for a period of one year. The existence of competition between these animals for food was determined by means of stomach analysis. The results were compared relative to each vertebrate and the bottom fauna procurred from the stream. It was shown that the food habits of D. ensatus and S. gairdneri were diverse enough to warrant partial exclusion on the basis of food. C. tenuis demonstrated selectivity and was shown to be under competitive stress from the other two species.

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Habitat And Food Habits Of Eutamias Minimus Scrutator In The Semi-Desert Regions Of Central Washington, Gary L. Hall Jun 1969

Habitat And Food Habits Of Eutamias Minimus Scrutator In The Semi-Desert Regions Of Central Washington, Gary L. Hall

All Master's Theses

This paper presents the results of a food habit study on Eutamias minimus scrutator in the sagebrush-bunch grass zone of Central Washington. The major objective of the research is to relate the availability of plant species within the local habitat to the food habit biology of the species.

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An Ecotypic Differentiation Of Human And Bovine Fecal Streptococci, With Application To Human Pollution In The Yakima River, Harlen Harvey Johnson Dec 1968

An Ecotypic Differentiation Of Human And Bovine Fecal Streptococci, With Application To Human Pollution In The Yakima River, Harlen Harvey Johnson

All Master's Theses

It was the purpose of this study to report on the development of a technique for distinguishing human fecal streptococci from bovine fecal streptococci, and to make application of this technique in describing some of the sources of pollution in the Yakima River as contributed by the Wilson Creek drainage system, in the Ellensburg area of Washington.

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The Development Of The Embryo Sac In Ranunculus Glaberrimus Hook, Chung-Ping Chin Aug 1968

The Development Of The Embryo Sac In Ranunculus Glaberrimus Hook, Chung-Ping Chin

All Master's Theses

A comparative study of embryological and morphological characters of the ovule in the family Ranunculaceae indicates that considerable variation exists within this family.

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The Effect Of Follicle-Stimulating Hormone And Testosterone Propionate On The Reproduction Of The Bull Snakes, Pituophis Melanoleucus Catenifer And Pituophis Melanoleucus Affinis; Accompanied With Analysis Of Changes In Blood Protein Constituents Following Stimulation, Jack Bradford Aug 1968

The Effect Of Follicle-Stimulating Hormone And Testosterone Propionate On The Reproduction Of The Bull Snakes, Pituophis Melanoleucus Catenifer And Pituophis Melanoleucus Affinis; Accompanied With Analysis Of Changes In Blood Protein Constituents Following Stimulation, Jack Bradford

All Master's Theses

The bull snake, Pituophis melanoleucus, was chosen for this experimentation for several reasons; (1) it is relatively abundant in Central Washington (2) it is a large snake, well able to withstand the effects of the frequent blood samplings which were necessary in this experimentation ... (3) the bull snake is an oviparous snake and ova development is rapid and after dissection, obvious.

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Geographic Variation In Dicamptodon Ensatus (Eschscholtz) With Notes On Life History And Zoogeography, Ronald A. Nussbaum Jul 1968

Geographic Variation In Dicamptodon Ensatus (Eschscholtz) With Notes On Life History And Zoogeography, Ronald A. Nussbaum

All Master's Theses

The purpose of this paper is to present information concerning geographic variation between three northern populations of Dicamptodon, and to add to the meager store of information concerning the life history and biology of the species.

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Niche Differentiating Mechanisms In Two Sympatric Species Of Swallows, David Thomas Moody Jul 1968

Niche Differentiating Mechanisms In Two Sympatric Species Of Swallows, David Thomas Moody

All Master's Theses

The present study considers certain aspects of the ecologies of cliff swallows (Petrochelidon pyrrhonota) and bam swallows (Hirundo rustica) in an area of overlap, where both species are found nesting together and foraging over the same fields. Careful attention was given to foraging flight patterns, foraging elevations, and food consumed by each species in an effort to determine whether or not there is any evidence of competition for food resources. Aggressive interactions between the species were recorded, and the general timing of their nesting cycles was noted.

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The Distribution Of Three Taxa Of Peromyscus In Central Washington, Gay Harold Engelsen Apr 1967

The Distribution Of Three Taxa Of Peromyscus In Central Washington, Gay Harold Engelsen

All Master's Theses

One aspect of the study was to define the present ranges of all types of Peromyscus in the study area; the other to determine the extent of interfertility of the groups.

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Home Range Analysis Of The Montane Vole, Don Rogers Toews Jun 1966

Home Range Analysis Of The Montane Vole, Don Rogers Toews

All Master's Theses

This study on Microtus montanus was divided into three major sections: 1) An examination of nests, burrows, and runways, 2) A comparison of two methods of home range analysis--live trapping and radio-isotope tracing, and 3) A comparison of the home range of Microtus montanus with other species of Microtus as published in the literature.

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Dry-Plains Conservation: An Activity Or Experimental Method Of Teaching Soil And Water Conservation In Southwestern Dry-Plains Natural Science Classrooms., David W. Pierson Jan 1964

Dry-Plains Conservation: An Activity Or Experimental Method Of Teaching Soil And Water Conservation In Southwestern Dry-Plains Natural Science Classrooms., David W. Pierson

Fort Hays Studies Series

This paper is an attempt to provide teachers in the dry-plains regions with certain concepts and techniques believed to be of value in assisting students to develop an understanding of the uniqueness of their environment. While most of the activities, experiments, and demonstrations were first organized for a biology class, many of them should be suitable for use in other classes which involve the natural sciences.

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The Webworm. 2. The Biology Of The Webworm, J A. Button Jan 1963

The Webworm. 2. The Biology Of The Webworm, J A. Button

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

A detailed knowledge of the seasonal history of an insect pest is essential for an understanding of the way in which it is affected by various management and cultural practices.

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Metabolic Rate And Body Weight Measurements Of Dipodomys Ordi And D. Merriami Under Various Stresses Of Dehydration, Nancy Rose Benally Feb 1962

Metabolic Rate And Body Weight Measurements Of Dipodomys Ordi And D. Merriami Under Various Stresses Of Dehydration, Nancy Rose Benally

Biology ETDs

It is of interest to investigate the possible effect of a new synthetic steroid, Aldactone, on the total body weight of the rodent Dipodomys. In addition, the present study includes the effect of dehydration and of high salt intake on the oxygen consumption of the Dipodomys, in a resting state.

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Serum Protein Electrophoresis Study Of Citellus Species, Rondal E. Bell May 1960

Serum Protein Electrophoresis Study Of Citellus Species, Rondal E. Bell

Biology ETDs

The systematic separation of species of the genus Citellus is based principally on external and cranial features. These features are well known in most of the genus, but there has been considerable uncertainty concerning the subgeneric allocation and a more comprehensive study is needed.

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Studies On The Trematode Larva Neascus, Thomas Reyes Jan 1957

Studies On The Trematode Larva Neascus, Thomas Reyes

University of the Pacific Theses and Dissertations

During the spring semesters of 1955 and 1956, while the writer was under the supervision of Dr. A. E. Noble, a preliminary survey was initiated on parasites in local fishes, amphibians, and reptiles occurring in the vicinity of Stockton, California. The collection of specimens in this survey included sixteen green sunfish, Lepomis cyanella, and two bluegills, L. macrochirus. Larval trematodes recovered from the heart and liver of these specimens belonged to the family Diplostomatidae Poirier (1886) which is characterized by a conspicuous constriction separating the fore and hind-bodies. The leaf-like forebody with the lateral borders converging ventrally to form a …

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The Biological Sciences In The General Education Program, La Roy W. Zell May 1953

The Biological Sciences In The General Education Program, La Roy W. Zell

Journal of the Minnesota Academy of Science

No abstract provided.

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A Curriculum Study Of The Biological Science Courses In The Secondary Schools And College Of Utah During 1947-48, Merrill H. Gunnell May 1948

A Curriculum Study Of The Biological Science Courses In The Secondary Schools And College Of Utah During 1947-48, Merrill H. Gunnell

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

At the present time there is a feeling among biologists in Utah that there should be improvement in biological science courses and course sequence to better fill the needs of the non technical student. There are many students filling group requirements with an accumulation of courses which may not provide them with the more important fundamental concepts and principles in biology. Information concerning these courses in high schools and colleges in necessary to provide a basis for curriculum revision in the field. Such information should be useful in evaluating the present system and suggesting modifications. Because of the need for …

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An Analytic Comparative Study Of Certain Biology Textbooks Used At Secondary School Level, Joseph E. Rankin Jul 1947

An Analytic Comparative Study Of Certain Biology Textbooks Used At Secondary School Level, Joseph E. Rankin

Master's Theses or Doctor of Nursing Practice

Biology is the science of life and therefore deserves every consideration in the high school curriculum. The world today is making an extensive and intelligent use of biology in solving problems of personal and social significance. Scientists have discovered that certain phases of the subject are more important to man's welfare than others. For this reason it is essential that biology be presented to our high school students not as isolated facts, but in relation to the problem of living. Through this science of living things, the student can gain a healthy respect for facts and for conclusions based on …

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Organization And Polarity Of Protoplasm, John P. Munson Jan 1910

Organization And Polarity Of Protoplasm, John P. Munson

All Faculty Scholarship for the College of the Sciences

In higher forms of life, we usually concede the presence of an organ specialized for the performance of a function. In these higher forms coordination of organs, which entails a regular sequence in their functions, is readily made out; and it seems a mere platitude to say, of these, that organization determines the functions of the organism. To what extent can functions exist in the absence of organization; does the one precede the other; or have function and organization developed simultaneously, out of matter devoid of both structure and function? In my studies on the cell, I have kept these …

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Embryology And Evolution, Malo Marius Amunson Jun 1906

Embryology And Evolution, Malo Marius Amunson

Manuscript Thesis Collection

The proofs of evolution must be sought in the entire field of science. Direct proof is found in the study of Morphology, whose bases are comparative anatomy; embryology; in the study of paleontology, of geology, of geographical distribution, in the study of nature and experiments of today. In this vast field of direct proofs of evolution it is our purpose to present some of the evidences of evolution as furnished by one of these, namely, Comparative Embryology.

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Spermatogenesis Of The Butterfly, Papilio Rutulus, John P. Munson Jan 1906

Spermatogenesis Of The Butterfly, Papilio Rutulus, John P. Munson

All Faculty Scholarship for the College of the Sciences

For a number of years I have been studying the spermatogenesis of Papilio rutulus (pl. 12, fig. 1) not ,with any one single problem especially in view, but with the aim of ascertaining the entire life history of its sperm cell, its various phases of development, its mode of growth and differentiation, the history of its several parts, and its relation to the organism.

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Student Biology Notebook, Jack Thorington, Joseph S. Winter Jan 1894

Student Biology Notebook, Jack Thorington, Joseph S. Winter

Winter Letterbooks

Student Biology Notebook dated 1894.

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The Alcohols, Charles E. Baker Jan 1894

The Alcohols, Charles E. Baker

Manuscript Thesis Collection

A study of Alcohols and the human body's reactions to them.

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Some Observations On Living Cells, S. Calvin Dec 1880

Some Observations On Living Cells, S. Calvin

Journal of the Minnesota Academy of Science

No abstract provided.

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