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Articles 21151 - 21180 of 21380
Full-Text Articles in Entire DC Network
Populations Of The Ant Aphaenogaster (Attomyrma) Treatae Forel On Abandoned Fields On The Edwin S. George Reserve, Mary Talbot
Populations Of The Ant Aphaenogaster (Attomyrma) Treatae Forel On Abandoned Fields On The Edwin S. George Reserve, Mary Talbot
Faculty Scholarship
Not available.
Whole Issue Nebraska Bird Review (July 1954) 22(3)
Whole Issue Nebraska Bird Review (July 1954) 22(3)
Nebraska Bird Review
TABLE OF CONTENTS
A Day With Doris, Mr. Eisenstaedt and the Sandhill Cranes ..................34
The Status of Nuttall's Poorwill in Nebraska.................. 35
Spring Field Day 1954.................. 37
General Notes.................. 41
Meetings and Reports ..................42
Membership List ..................44
Age And Growth Of The Utah Chub, Gila Atraria (Girard), In Panguitch Lake And Navajo Lake, Utah, From Scales And Opercular Bones, John M. Neuhold
Age And Growth Of The Utah Chub, Gila Atraria (Girard), In Panguitch Lake And Navajo Lake, Utah, From Scales And Opercular Bones, John M. Neuhold
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
Previous literature indicates the opercular bone as a useful tool for the determination of age and growth of fish. The reliability and validity of this method is tested for two populations of Utah chub. Age and growth are calculated for 222 Utah chub collected from Panguitch Lake and 212 Utah chub collected from Navajo Lake, southern Utah, in 1952-1953 from both scales and opercular bones. Scales are measured with the aid of a projector. Opercular bones are measured directly. The center of growth of the opercular bone is posterior to the posterior lip of the fulcrum. Correction for curvature is …
Whole Issue Nebraska Bird Review (April 1954) 22(2)
Whole Issue Nebraska Bird Review (April 1954) 22(2)
Nebraska Bird Review
TABLE OF CONTENTS
Birds of Prairie Island ...................18
A Reply To: When the Bird Watcher Reads ...................20
The Avocet in Nebraska ...................22
Editorial-How Well Do We Know the Birds of Nebraska? ...................26
General Notes................... 27
Communications ...................28
Book Reviews ...................29
The Occurrence Of Ornithodiplostomum Ptychocheilus (Faust) (Trematoda: Strigeida) In Fish And Birds, Glenn L. Hoffman
The Occurrence Of Ornithodiplostomum Ptychocheilus (Faust) (Trematoda: Strigeida) In Fish And Birds, Glenn L. Hoffman
United States Fish and Wildlife Service: Publications
The metacercaria of Ornithodiplostomum ptychocheilush as been reported by Faust (1918; Illinois Biological Monographs 4(1): 1-120) from mesenteries of the squawfish, Ptychocheilus oregonensis (Richardson), and by Hughes and Piszcek (1928; Journal of Parasitology 15: 58-62) and Van Haitsma (1930; Transactions of the American Microscopical Society 49: 140-153) in the northeastern sand shiner, Notropis deliciosus stramineus (Cope). Van Haitsma (1930) found the adults in mergansers, Mergus americanus, M. serrator, Lophodytes cucullatus, and the old squaw duck, Harelda hyemalis. He also reared the metacercaria to the adult in young domestic ducks. Lyster (1940; Canadian Journal of Research 18D: 79-82) reported …
(Summary) Of Variation In Pasture Ticks (Acarina, Ixodidae) And Its Significance For Systematics, G. S. Pervomaisky
(Summary) Of Variation In Pasture Ticks (Acarina, Ixodidae) And Its Significance For Systematics, G. S. Pervomaisky
United States Naval Medical Research Unit 3: Publications
First paragraph:
1) Pasture ticks (Ixodidae) have a great significance as specific vectors and stimulators of many infectious diseases of man and cattle.
Plankton Studies Of The Tomales Bay, California, Andrew William Mcclain
Plankton Studies Of The Tomales Bay, California, Andrew William Mcclain
University of the Pacific Theses and Dissertations
These studies on the plankton of Tomales Bay were designed to determine the effects of such physical factors as tides, temperatures, salinities and sunshine on the quantities of various types of organisms, and to obtain a more comprehensive picture of estuarine life at the Pacific Marine Station. The studies were begun in the summer of 1948 and continued through the summer of 1953.
Although various studies have been conducted on different aspects of marine plankton, the only general treatments of the subject of which the writer is aware are those of Johnstone (1924), Ricketts and Calvin (1951), Sproaton (1949) and …
Spermatogenesis In The Sand Crab Emerita Analoga, Mario Martin Menesini
Spermatogenesis In The Sand Crab Emerita Analoga, Mario Martin Menesini
University of the Pacific Theses and Dissertations
Crustacean spermatozoa are among the most peculiarly modified germ cells in the animal kingdom. Many of their striking cytological specializations may be observed in the sperm cells or Emerita analoga, the so-called sand crab. This animal has been used by the writer for studies on spermatogenesis and on spermatozoan behavior during the summer or 1951, 1952, and 1953 at the Pacific Marine Station.
Kentucky Warbler (Vol. 29, No. 4), Kentucky Library Research Collections
Kentucky Warbler (Vol. 29, No. 4), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Whole Issue Nebraska Bird Review (October 1953) 21(4)
Whole Issue Nebraska Bird Review (October 1953) 21(4)
Nebraska Bird Review
Published quarterly in January, April, July, and October by the Nebraska Ornithologists' Union as its official journal and sent free to all members who are not in arrears for dues. Subscriptions at $3.50 per volume in the United States and $3.75 in all other countries, payable in advance. Single numbers, $1.00 each. All dues and subscriptions should be remitted to the Treasurer, Mrs. F. J. Patton, Blue Springs, Nebraska. Orders for back numbers should be sent to the Custodian, Miss Mary Lou Hanson, University of Nebraska State Museum, Lincoln, Nebraska. All manuscripts for publication should be sent to the Editor, …
Kentucky Warbler (Vol. 29, No. 3), Kentucky Library Research Collections
Kentucky Warbler (Vol. 29, No. 3), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
The Skeletal Anatomy Of Several Species Of Salamanders With Special Reference To Bolitoglossa Rufescens (Cope), Afton M. Hansen
The Skeletal Anatomy Of Several Species Of Salamanders With Special Reference To Bolitoglossa Rufescens (Cope), Afton M. Hansen
Theses and Dissertations
This paper deals with the complete skeletal anatomy ot Bolitoglossa rufescena (Cope). All parts are figured and described. In addition to this many of the main skeletal parts of Bolitoglossa platydactyla (Cuvier) Bolitoglossa occidentalis Taylor, and Bolitoglossa flaviventris (Schmidt) are described and figured. A comparison of the following parts of the above mentioned salamanders is presented: skull, atlas, ninth trunk vertebra, sixth caudal vertebra, carpals, tarsals and digits. The similarities and differences are pointed out as they appeared to the author. The relationship and specialization ot these species is discussed rather briefly.
The Hawk Path At Duluth, Pershing B. Hofslund
The Hawk Path At Duluth, Pershing B. Hofslund
Journal of the Minnesota Academy of Science
No abstract provided.
Ants Of An Old-Field Community On The Edwin S. George Reserve, Livingston County, Michigan, Mary Talbot
Ants Of An Old-Field Community On The Edwin S. George Reserve, Livingston County, Michigan, Mary Talbot
Faculty Scholarship
Not available.
Avian Botulism Information On Earlier Research
Avian Botulism Information On Earlier Research
United States Fish and Wildlife Service: Publications
Over the years, the disease, avian botulism, has been an important factor limiting populations of waterfowl, particularly in the West. Great numbers (doubtless millions) of ducks have died from this disease, and because of such heavy tolls, studies of the malady were begun early in the century and continued intermittently to the present time.
This summary brings up to 1950 the series of investigations on botulism by Wetmore (1918), Kalmbach (1930, 1932), Kalmbach and Gunderson (1934), Sperry (1947), and others. This information has been compiled as a service to those concerned with conservation of our waterfowl resources. A cooperative agreement …
The Effect Of Antibiotic And Vitamin B12 Feed Supplements On Lactating Dairy Cows., Muhammad Obayedul Haq
The Effect Of Antibiotic And Vitamin B12 Feed Supplements On Lactating Dairy Cows., Muhammad Obayedul Haq
LSU Historical Dissertations and Theses
No abstract provided.
Whole Issue Nebraska Bird Review (July 1952) 20(3)
Whole Issue Nebraska Bird Review (July 1952) 20(3)
Nebraska Bird Review
Table of Contents
Nesting Observations on Certain Sandhill Lakes, by Norman Chupp................ 49
Spring Field Day 1952 ................ 50
Meetings and Reports ................ 55
Obituary................ 56
General Notes................ 57
Book Reviews................ 61
Kentucky Warbler (Vol. 28, No. 2), Kentucky Library Research Collections
Kentucky Warbler (Vol. 28, No. 2), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Factors Affecting The California Quail Populations In Uintah County, Utah, R. Lynn Nielson
Factors Affecting The California Quail Populations In Uintah County, Utah, R. Lynn Nielson
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The California Quail is native to the coastal and semi-arid regions of California extending north into Oregon. Two subspecies are commonly recognized. the California Quail (Lophortyx californica brunnescens Ridgway), and the Valley Quail (Lophortyx californica californica Shaw). The two forms are very similar in coloration and habits and, for the purpose of this study, no effort is made to distinguish the two.
Kentucky Warbler (Vol. 28, No. 1), Kentucky Library Research Collections
Kentucky Warbler (Vol. 28, No. 1), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Oral And Branchial Movements Of Developing Anuran Embryos And Larvae, James H. Fribourgh
Oral And Branchial Movements Of Developing Anuran Embryos And Larvae, James H. Fribourgh
Journal of the Arkansas Academy of Science
No abstract provided.
Earthworms Of Arkansas, David Causey
Earthworms Of Arkansas, David Causey
Journal of the Arkansas Academy of Science
No abstract provided.
Furunculosis Of Fish, Bruce M. Mccraw
Furunculosis Of Fish, Bruce M. Mccraw
United States Fish and Wildlife Service: Publications
The series embodies results of investigations, usually of restricted scope, intended to aid or direct management or utilization practices and as guides for administrative or legislative action. It is issued in limited quantities for the official use of Federal, state or cooperating Agencies and in processed form for economy and to avoid delay in publication.
Some Mechanical And Horomonal Methods Of Dilating The Bovine Cervix, Edmund F. Graham
Some Mechanical And Horomonal Methods Of Dilating The Bovine Cervix, Edmund F. Graham
Electronic Theses and Dissertations
The selection for certain inherited characteristics war practiced approximately 2000 years before the Christian Era. Jacob (Genesis 30:28-43) was given all the speckled cattle in his master’s herd for being herdsman. In a few years, by selecting for the spotting factor, only speckled cattle remained in the herd. Selection was the first tool for segregating definite characteristics. As a means of more rapid improvement artificial insemination was practiced by an Arabian chieftain as early as 1322 A. D. (35). Since 1322 these crude methods of transferring semen have been perfected until approximately four million cows were inseminated in the United …
Life Cycle Studies On Stephanostomum Pacificum, A New Species Of Trematode, From The Pacific Marine Station Area, James Frank Hughes
Life Cycle Studies On Stephanostomum Pacificum, A New Species Of Trematode, From The Pacific Marine Station Area, James Frank Hughes
University of the Pacific Theses and Dissertations
This report summarizes the results of a study on the life cycle of a member of the trematode family Acanthooolpidae, genus Stephanostomum Looss, 1899, which was carried on during the summers of 1948, 1949, 1951, and the winter of 1948-49 at the Marine Station of the College or the Pacific at Dillon Beach, California. Only one previous experimental work has been done on the life cycle of any member of this family. Martin (1939) reported the life cycle of Stephanostomum tenue (Linton) which he had obtained at Woods Hole, Massachusetts. Modifications of his technical procedures have been used in this …
Kentucky Warbler (Vol. 27, No. 4), Kentucky Library Research Collections
Kentucky Warbler (Vol. 27, No. 4), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Some Studies On The Consortes Of The Norway Rat In Utah County, Utah, Roy J. Myklebust
Some Studies On The Consortes Of The Norway Rat In Utah County, Utah, Roy J. Myklebust
Theses and Dissertations
This study of the Norway rat, Rattus norvegicus (Erxleben) and its consortes was undertaken in Utah County to determine : (1} the frequency of infection of Trichinella spiralis (Owen) Railliet, the causative organism of trichinosis in humans, (2) the populations of fleas, lice and mites on the rat, and (3) the occurence of other consortes. This study covered a period from January 1951 through June, 1951. Additional records were made available from studies being made by the Department of Zoology and Entomology, Brigham Young University on parasitic arthropods (listed as Project Ten). The species ot fleas, and those mites which …
Ecology Of Passerine Birds Wintering At Utah Lake, Joseph R. Murphy
Ecology Of Passerine Birds Wintering At Utah Lake, Joseph R. Murphy
Theses and Dissertations
During the period of October to April of the winter of 1950-51, an ecological study was undertaken of a population or passerine birds wintering in a segment of the Utah Lake Shore. Available winter weather data indicated that although such factors as precipitation, temperature, and wind may often be severe, they are not critical enough to prevent a fairly large population of passerine birds from spending the winter months in the study locale. Five fairly distinct plant communities can be recognized in the area. There is evidence which indicates that certain passerine bird species are especially dependent on a particular …
Life History Of The Utah Sculpin Cottus Bairdi Semiscaber (Cope) In Logan River, Utah, William M. Zarbook
Life History Of The Utah Sculpin Cottus Bairdi Semiscaber (Cope) In Logan River, Utah, William M. Zarbook
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The study of the Utah sculpin in Logan River was based on 801 specimens collected during 1949 to March 1951. Numbers of fish examined for various catagories of the study wares length-frequency, 495; aging by vertebrae, 407; length-weight relationship, 601; and food habits, 275.
Fish were collected by use of an electric shocking machine generating 600 watts and 220 volts. Numbers of fish occurred as high as 150 per tenth mile of stream. Preferred habitats occurred in areas of coarse gravel and small rocks.
Vertebrae dissected from the fish were used in age determination. Length-frequency proved to be a general …
An Ecological Study Of The Utah Sculpin Cottus Bairdi Semiscaber In Logan River, Utah, William Merle Zarbock
An Ecological Study Of The Utah Sculpin Cottus Bairdi Semiscaber In Logan River, Utah, William Merle Zarbock
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The study of the Utah sculpin Cottus bairdi semiscaber, or Rocky Mountain bullhead as it is known locally on Logan River, Utah, is primarily one of determining its relation to game fish. Field work for this study began in 1949 and continued to March of 1951. Numbers of the Utah sculpin on Logan River have been estimated to be as high as 150 per tenth mile of stream. The larger populations are in the area of the third impoundment on Logan River and downstream.