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Articles 33961 - 33990 of 36385
Full-Text Articles in Entire DC Network
146 Species Observed In Audubon Society S Bird Census, Jessie Maye Smith
146 Species Observed In Audubon Society S Bird Census, Jessie Maye Smith
Jessie Maye Smith Birds and Watchers Columns Collection
No abstract provided.
Mulberry Breakfast For Birds, Watchers, Jessie Maye Smith
Mulberry Breakfast For Birds, Watchers, Jessie Maye Smith
Jessie Maye Smith Birds and Watchers Columns Collection
No abstract provided.
The Ecology Of The Western Spotted Frog, Rana Pretiosa Pretiosa, Baird And Girard: A Life History Study, Ronald Ladell Morris
The Ecology Of The Western Spotted Frog, Rana Pretiosa Pretiosa, Baird And Girard: A Life History Study, Ronald Ladell Morris
Theses and Dissertations
Observations and collections on the breeding biology and life history of Rana pretiosa pretiosa Baird and Girard have been made in central Utah from 1962 to 1967. The frogs' activities were followed from their spring emergence untril the tadpoles metamorphosed and hibernated in the fall. Collections and observations were made at regular intervals through the entire period of summer activity. Data were gathered at the ponds and samples of the life history stages were taken to the laboratory where they were analyzed and studied. Emergence is normally during the middle of March. The males precede the larger females by three …
Kentucky Warbler (Vol. 43, No. 2), Kentucky Library Research Collections
Kentucky Warbler (Vol. 43, No. 2), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Notes On The Oaxacan Vole, Microtus Oaxacensis Goodwin, 1966, J. Knox Jones Jr., Hugh H. Genoways
Notes On The Oaxacan Vole, Microtus Oaxacensis Goodwin, 1966, J. Knox Jones Jr., Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Goodwin (American Museum Novitates, 2243: 1-4, 1966) named Microtus oaxacensis on the basis of a single male taken in "evergreen rain forest at Tarahundi, a ranch near the village of Vista Hermosa," at an altitude of "about 5,000 feet" in the Mexican state of Oaxaca. On June 25, 1964, members of a field party from the Museum of Natural History, The University of Kansas, obtained two adult voles referable to oaxacensis in "dense cloud forest" southwest of Vista Hermosa (approximately 25 kilometers to the south of the type locality) as follows: male (KU 100046) from 6% miles SSW Vista Hermosa, …
Physiological Variations In The Uinta Ground Squirrel (Citellus Armatus) In Relation To Seasonal Activity And Altitude, Marden Reed Kohler
Physiological Variations In The Uinta Ground Squirrel (Citellus Armatus) In Relation To Seasonal Activity And Altitude, Marden Reed Kohler
Theses and Dissertations
The purpose of this investigation was to study the weight changes of selected internal organs to determine possible physiological variation occurring at six different altitudes ranging from 5,800 to 8,500 feetand during the summer season. This report was limited to the study of changes in the adrenal glands, kidneys, testes, heart and intestines. Electrocardiogram, heart and respiration rates were investigated also. These changes were statistically analyzed to determine possible seasonal differences along with any significant changes occurring at different elevations. The results of the study should in part overcome the lack of current experimental data for Citellus armatus.
A Study Of The Golden-Mantled Ground Squirrel (Citellus Lateralis) In A Sagebrush-Grass Community, Dennis E. Peterson
A Study Of The Golden-Mantled Ground Squirrel (Citellus Lateralis) In A Sagebrush-Grass Community, Dennis E. Peterson
Theses and Dissertations
Golden-mantled ground squirrels (Citellus lateralis Say) typically inhabit coniferous forest regions, but they occasionally occur in desert shrub habitats. The principal purpose of this study was to observe activities of mantled squirrels in a sagebrush community, and to ascertain factors which contribute to their success in an unusually arid habitat. Squirrels of this community belong to the subspecies C. l. lateralis; however, intergradation between typical C. l. lateralis and C. l. castanurus is evident. This community is in the Wasatch Mountains at an elevation of 5,750 feet, and in the Upper Sonoran Zone. These three conditions were not previously recorded …
Investigations Into The Spawning Ecology Of The White Bass Roccus Chrysops, (Rafinesque) In Utah Lake, Utah, Frédérick Vinvent
Investigations Into The Spawning Ecology Of The White Bass Roccus Chrysops, (Rafinesque) In Utah Lake, Utah, Frédérick Vinvent
Theses and Dissertations
Utah Lake, located in Utah County, north-central Utah, is one of the most important natural fishing lakes in the state. The spawning ecology of the white bass (Roccus chrysops) was studied in Utah Lake between 1964 and 1966. Gill nets and seining were the primary means of sampling. The spawning location was sampled every other day throughout the spring and early summer of 1966. Three major winter schooling areas were found: Provo Bay - Creer Access south to the mouth of Spanish Fork River, Lincoln Beach, and off Ludlow Barn. There appears to be extensive winter feeding and movement among …
Life History And Ecology Of The Colorado Chipmunk (Eutamias Quadrivittatus Hopiensis), Carl Eugene Wadsworth
Life History And Ecology Of The Colorado Chipmunk (Eutamias Quadrivittatus Hopiensis), Carl Eugene Wadsworth
Theses and Dissertations
Observations of reproductive behavior, growth and development of the young, food habits, habitat preference, and daily and seasonal activity patterns of the Colorado chipmunk are presented for the first time. The breeding cycle is as follows: mating occurs in late February or early March; the young are born in early to mid-April and first appear above ground in May, but do not reach breeding age until the following spring. There is only one litter of young per year. The mean number per litter was 5.7 for three litters born in captivity. The sex ratio of the animals born in captivity …
A New Subspecies Of The Fringe-Tailed Bat, Myotis Thysanodes, From The Black Hills Of South Dakota And Wyoming, J. Knox Jones Jr., Hugh H. Genoways
A New Subspecies Of The Fringe-Tailed Bat, Myotis Thysanodes, From The Black Hills Of South Dakota And Wyoming, J. Knox Jones Jr., Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
A new subspecies of Myotis thysanodes, possibly representing a disjunct population, is described from the Black Hills of South Dakota and Wyoming. The new race is compared with M. t. thysanodes and also with Myotis evotis evotis, which it superficially resembles.
Effects Of Temperature On In Vitro Excystation Of Various Eimeria Species, Larry E. Hibbert
Effects Of Temperature On In Vitro Excystation Of Various Eimeria Species, Larry E. Hibbert
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Cleaned oocysts of Eimeria bovis, E. ellipsoidalis, E. auburnensis, and E. zurnii of cattle, E. ahsata and E. ninakohlyakimovae of sheep, E. bilamellata and E. callospermophili of the ground squirrel, and E. tenella of chickens were pretreated with 50 percent carbon dioxide/50 percent air at temperatures ranging from 29 to 45 C with 2 degree intervals for 4, 6, 8, 10, and 30 hours and treated with bile and trypsin.
The optimum temperature in species of ruminant coccidia was 39 to 41 C. In E. bovis, excystation occurred from 29 to 43 C. At 43 C and above, …
The Influence Of Hot Brine On The Calcium Content, Score, And Physical Properties Of Low-Fat, Cheddar-Like Cheese, Robert V. Ogden
The Influence Of Hot Brine On The Calcium Content, Score, And Physical Properties Of Low-Fat, Cheddar-Like Cheese, Robert V. Ogden
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Two factors that are important in the production of the typical body and texture of cheddar cheese are acid development and milk fat content. When either of these is absent or present in less-than-normal amounts, the resulting cheese shows marked defects of curdiness and firmness.
When acid development in a vat of cheese is arrested, it is referred to as a "dead" vat. The cheese from this vat may be salvaged by use of the hot brine method of treatment. Hot brine treated cheese, although lacking the desired acid development, is a reasonably acceptable product, having the desired characteristics of …
Heat Denaturation Of Serum Proteins In Skimmilk And Whey As Measured By The Harland-Ashworth Test, Lynn Verl Ogden
Heat Denaturation Of Serum Proteins In Skimmilk And Whey As Measured By The Harland-Ashworth Test, Lynn Verl Ogden
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Milk serum proteins have been shown by other workers to be partially protected from heat denaturation by the presence of milk solids (8, 15, 16) and whole caseinate (14). This study revealed that some serum proteins (B-lactoglobulin), as shown by the Harland-Ashworth test (14, 17), were more readily denatured in skimmilk than in rennet whey. A comparison of the heat denaturation rate of serum proteins in whey as opposed to those in whey containing 2.5 percent isoelectric casein was also studied. A striking protection of serum proteins seemed apparent in the presence of isoelectric casein. However, it was learned that …
Feeding Ecology And Territorial Behavior Of The Yellow Warbler, Merrill J. Frydendall
Feeding Ecology And Territorial Behavior Of The Yellow Warbler, Merrill J. Frydendall
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A controversy dating from the appearance of Altum's book, Der Vogel und sein Leben, 1868 (Mayr, 1935) is that of the biological function or functions of the territorial behavior in birds. However, attention was not focused upon this problem until the advent of Howard's book, Territory in Bird Life, published in 1920. In a general review of the problem Hinde (1956) discussed several functions of the territory and presented evidence both for and against their importance. The more important of these presumed functions are: (1) limitation of population density; (2) facilitation of pair formation and maintenance of the …
The Incidence And Life Cycle Of Eimeria Utahensis Sp. N. From Kangaroo Rats Of Northwestern Utah, John V. Ernst
The Incidence And Life Cycle Of Eimeria Utahensis Sp. N. From Kangaroo Rats Of Northwestern Utah, John V. Ernst
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A total of 176 kangaroo rats (151 Dipodomys ordii and 25 D. microps) were captured in northwestern Utah and examined for coccidia. Of these 176 rats, four D. ordii (2.6%) and four D. microps (16.0%) were infected with Eimeria utahensis, a new species of coccidia. Little seasonal difference was found in the infection rate of either species. The characteristics of the sporulated oocysts of this species were described. A sporocyst plug was reported for the first time in an eimerian oocyst.
Artificially excysted sporozoites were studied by various methods. Thirty living sporozoites averaged 22.5 𝜇 in length by …
Life Cycles Of Three Species Of Eimeria From The Uinta Ground Squirrel, Spermophilus Armatus, Kenneth S. Todd Jr.
Life Cycles Of Three Species Of Eimeria From The Uinta Ground Squirrel, Spermophilus Armatus, Kenneth S. Todd Jr.
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A study of the coccidia of the Uinta ground squirrel, Spermophilus (Citellus) armatus, was undertaken to determine the incidence of coccidia in a population of these ground squirrels, the life cycle and pathogenicity of the coccidia, and the host specificity of certain of the species of coccidia found in this and five other species of ground squirrels (S. richardsoni, S. variegatus, S. lateralis, S. columbianus, and S. beecheyi).
Uinta ground squirrels were live trapped and their feces examined to determine the incidence of coccidian infection. Specimens of S. armatus were maintained in the laboratory and given a pure inoculum of …
Eutrophication Trends Of Bear Lake, Idaho-Utah And Their Effect On The Distribution And Biological Productivity Of Zooplankton, David Nyquist
Eutrophication Trends Of Bear Lake, Idaho-Utah And Their Effect On The Distribution And Biological Productivity Of Zooplankton, David Nyquist
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Zooplankton of the littoral and limnetic zones of Bear Lake, Idaho-Utah, were collected over a 17-month period. Twenty-three species of zooplankton were recorded, as well as nine other species represented by both flora and fauna. At the time of sampling 17 physical and chemical parameters were also measured. Methods of analysis for the plankton and the environment are described and discussed.
The objectives of this project were fourfold:
- To establish a record of the current zooplankton population before changes due to the increase of organic nutrients occur.
- To compile a qualitative and quantitative standard against which future populations can be …
An Examination Of A Putative System For The In Vitro Synthesis Of Drosophila Tryptophan Pyrrolase, John P. Phillips
An Examination Of A Putative System For The In Vitro Synthesis Of Drosophila Tryptophan Pyrrolase, John P. Phillips
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
A system, reported by Morrison (1964), for the in vitro synthesis of Drosophila tryptophan pyrrolase has been critically studied. This putative system is based on the addition of a Drosophila "RNA" extract to a Drosophila cell-free protein synthesizing system; the synthesized enzyme is then allowed to catalyze a specific reaction, the product of which is measured by direct adsorption.
The results of this study present a three-fold argument against the interpretation of synthesis of tryptophan pyrrolase in the Morrison in vitro system: (1) RNA from a null-allele, v36f, stimulated the same tryptophan pyrrolase "activity" in the in vitro …
Lake Benbrook Birds Haven, Jessie Maye Smith
Lake Benbrook Birds Haven, Jessie Maye Smith
Jessie Maye Smith Birds and Watchers Columns Collection
No abstract provided.
Notes On Some Mammals From Nebraska, Jerry R. Choate, Hugh H. Genoways
Notes On Some Mammals From Nebraska, Jerry R. Choate, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
In the course of field studies in Nebraska, several noteworthy records of mammals have been obtained that add significantly to their known distribution, as shown by Jones (1964) in his "Distribution and taxonomy of mammals of Nebraska." In the following accounts all catalogue numbers refer to specimens deposited in The University of Kansas Museum of Natural History. Parenthetical page references refer to Jones (1964) unless otherwise indicated.
Second Record Of Myotis Volans From North Dakota, Hugh H. Genoways
Second Record Of Myotis Volans From North Dakota, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
The first record of the long-legged myotis, Myotis volans interior, in North Dakota was reported by Jones and Genoways (Trans. Kansas Acad. Sci., 69:89, 1966) on the basis of a single male from 1 mi. S and 1 mi. W Medora, Billings County. On 25 May 1966, nine adult females (KU 106932-40) of this bat were obtained by Donald R. Johnson in Granville, McHenry County. These specimens extend the known geographic distribution of M. v. interior approximately 160 miles to the northeast from the previously reported North Dakotan locality and represent the northeastern most locality of record for the …
Taxonomic Status Of The Brush Mouse, Peromyscus Boylii Cansensis Long, 1961, Jerry R. Choate, Carleton J. Phillips, Hugh H. Genoways
Taxonomic Status Of The Brush Mouse, Peromyscus Boylii Cansensis Long, 1961, Jerry R. Choate, Carleton J. Phillips, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
In the course of a study of mammals from southeastern Kansas and northeastern Oklahoma, the authors have collected specimens of the brush mouse, Peromyscus boylii cansensis Long, from its type locality and also from a place about 16 miles southwest of the type locality. The results of studies of these specimens, and of the holotype and paratypes of the subspecies, are presented and discussed herein.
Birds Benefit, Lose From Human Influx, Jessie Maye Smith
Birds Benefit, Lose From Human Influx, Jessie Maye Smith
Jessie Maye Smith Birds and Watchers Columns Collection
No abstract provided.
Ua3/3/1 Alpha Chi Crescent, Vol. Iii, No. 3, Alpha Gamma Rho
Ua3/3/1 Alpha Chi Crescent, Vol. Iii, No. 3, Alpha Gamma Rho
Student Organizations
Newsletter created by and about Alpha Gamma Rho fraternity.
First Classification Score And Length Of Herd Life, L. W. Specht, H. W. Carter, L. Dale Van Vleck
First Classification Score And Length Of Herd Life, L. W. Specht, H. W. Carter, L. Dale Van Vleck
Department of Animal Science: Faculty Publications
The relationship of first score and length of life in the herd was measured in Holstein females two or three years of age at first classification. The regression of herd life (number of times classified) on the first over-all type score (nearly all values were between 65 and 90 points) was 1.7 months. Correlation between first classification score and herd life was approximately 0.2, indicating that less than 5% of the variation in herd life could be attributed to the relationship between first score and herd life.
Differences among herds accounted for about 10% of the total variance in overall …
Wind-Blown Foliage Hampers Efforts Of Early Bird Watchers, Jessie Maye Smith
Wind-Blown Foliage Hampers Efforts Of Early Bird Watchers, Jessie Maye Smith
Jessie Maye Smith Birds and Watchers Columns Collection
No abstract provided.
Aquatic Western Grebe Added To List Of Birds Seen In Area, Jessie Maye Smith
Aquatic Western Grebe Added To List Of Birds Seen In Area, Jessie Maye Smith
Jessie Maye Smith Birds and Watchers Columns Collection
No abstract provided.
Travels Of Oranges Followed Along Routes Of Civilizations, Jessie Maye Smith
Travels Of Oranges Followed Along Routes Of Civilizations, Jessie Maye Smith
Jessie Maye Smith Birds and Watchers Columns Collection
No abstract provided.
City Oriented To Manned Flight Home Of Expert Bird Banders, Jessie Maye Smith
City Oriented To Manned Flight Home Of Expert Bird Banders, Jessie Maye Smith
Jessie Maye Smith Birds and Watchers Columns Collection
No abstract provided.
Whole Issue Nebraska Bird Review (April 1967) 35(2)
Whole Issue Nebraska Bird Review (April 1967) 35(2)
Nebraska Bird Review
TABLE OF CONTENTS
Nesting of Great Horned Owls in Nebraska.....................26
The 1966 Nesting Season.....................29
1966 Christmas Count.....................38
Red-headed Woodpecker Predation on Starlings.....................43
Notes.....................44
Book Reviews.....................45
Nest Parasitism between Duck and Pheasants.....................47
Treasurer's Report.....................48