Digital Commons Network^™

Neolabidophorus Yucatanensis Gen. Et Sp. N. And A New Record For Dermacarus Ornatus Fain, 1967 (Acarina: Glycyphagidae) From Heteromys Gaumeri Allen And Chapman, 1897, Gaumer's Spiny Pocket Mouse (Rodentia: Heteromyidae), Danny B. Pence, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

Two species of hypopial nyrnphs of mites of the family Glycyphagidae were recovered from Heteromys gaumeri from Yucatan, Mexico. Numerous specimens of a hypopus identified as Dermacarus ornatus. Fain were recovered from the hair and skin. A single specimen of an endoparasitic hypopus identified as a new genus and species, Neolabidophorus yucatanensis, was recovered from the hair follicles. The new genus differs from similar forms of the subfamily Metalabidophorinae in having a rudimentary clasper organ represented by a median sclerite behind legs IV without external serrated claspers, structure and slightly dorsal position of the tarsal solenidia on legs …

Bats Of Margarita Island, Venezuela, With Zoogeographic Comments, James Dale Smith, Hugh H. Genoways

University of Nebraska State Museum: Mammalogy Papers

Sixteen species of bats are reported from Margarita Island, Nueva Esparta, Venezuela. These include two species of emballonurids, one noctilionid, two mormoopids, nine phyllostomatids, one vespertilionid, and one molossid. Accounts including natural history and taxonomic comments are given for each species. The chiropteran fauna of Margarita Island is compared with the bat faunas of the adjacent Venezuelan mainland and islands off the northern coast of South America, including Trinidad and other Antillean islands. It is concluded that the chiropteran fauna of Margarita Island represents an attenuated mainland fauna.

Venezuelan Macronyssidae (Acarina:Mesostigmata), Robert C. Saunders

Theses and Dissertations

A total of over 5000 mite specimens representing 49 species was studied and evaluated. The most frequently encountered species was Ornithonyssus bacoti. Based on these specimens, a brief review of the family Macronyssidae in Venezuela is presented. Included are brief notes as to medical importance and host relationships; also a key to the genera of Venezuelan Macronyssidae and a host-parasite list are included. Reprints of two papers and the manuscript of a third are included as part of the dissertation requirements. Contained in these are descriptions of three new genera (Argitis, Lepidodorsum, and Nycteronyssus) and four new species (Acanthonyssus proechimys, …

Nutrient And Energy Composition Of Beef Cattle Feedlot Waste Fractions, C. B. Gilbertson, J. A. Nienaber, J. R. Ellis, T. M. Mccalla, T. J. Klopfenstein, S. D. Farlin

Historical Research Bulletins of the Nebraska Agricultural Experiment Station

This bulletin describes nutrient and energy composition of beef cattle waste fractions as a function of the ration roughage level and type of feedlot. Results can be used to plan engineering system approaches and research to develop handling and processing equipment necessary for recovery of the most valuable portion of waste.

Microanatomical Studies Of Dentalium Pilsbryi Rehder, 1942 And D. Texasianum Philippi, 1848, Kenneth R. Bazata

Open Access Master's Theses (through 2010)

In the course of an investigation of the nature of the heart and kidney of D. pilsbryi, the present author discovered an unexpected configuration of the anatomy of the digestive system (Bazata, 1971). The present report represents an extension of this preliminary study and is the first detailed account of the digestive system in D. pilsbryi and D. texasianum. Comparative descriptions of the siphonal complex, the foot, and the histology of the anterior mantle also are given.

Advisor: Carl W. Gugler

Feeding And Food Preferences By Three Sympatric Species Of Cyprinodontid Fishes, Lawrence J. Baer

OES Theses and Dissertations

The feeding and food utilization by three sympatric species of cyprinodontid fishes was examined using a modified Ivlev Electivity Co-efficient. Results indicated that although Fundulus heteroalitus and Fundulus majalis are sympatric in the area examined,their usage of the available food source varied noticeably. The third investigated species, Cyprinodon variegatus, fed mainly upon a vegetal detritus food source varied by the consumption of invertebrate and vertebrate food items. Slight intra-specific variances of diet between crespuscular periods was also discussed.

Neotoma Alleni, Hugh H. Genoways, Elmer C. Birney

University of Nebraska State Museum: Mammalogy Papers

Neotoma alleni Merriam, 1892
Allen’s Woodrat.

Neotema alleni Merriam, 1892:168. Type locality Manzanillo, Colima.

Hodomys vetulus Merriam, 1894:236. Type locality Tehuacan, Puebla.

Tb72: Selection For Type And Milk Production In Dairy Cattle, Howard C. Dickey

Technical Bulletins

This publication discusses milk production in dairy cattle, then explains type improvement, then describes one can select for both type and production with the aid of a chart.

Whole Issue Nebraska Bird Review (June 1974) 42(2)

Nebraska Bird Review

Table of Contents

1973 (Sixteenth) Fall Occurrence Report .......................................... 22

The Seventy-third Annual Meeting ................................................... 33

Notes ........................................................................ 38

Honorary Member - C. W. Huntley ................................. 42

Hermit Warbler Reported in Nebraska ................................ 42

Notes .............................................................. 43

Reproductive Biology Of The European Wild Hog (Sus Scrofa) In The Great Smoky Mountains National Park, Robert W. Duncan

Masters Theses

The present study was conducted within the Tennessee portion of the Great Smoky Mountains National Park from fall 1971 to the summer of 1973. Information on the reproductive biology and population dynamics of the European wild hog (Sus scrofa) was obtained by the collection and analyses of reproductive tracts, field observation and back-dating ages to establish periods of reproductive activity.

Based on the 162 animals collected during the study, the male:female sex ratio, for all age classes, was 52:48. Age class structure was indicative of an expanding population.

Both male and female wild hogs were found to attain …

A Survey Of Commercial Shellfish Around Pig Point In The Nansemond River, Dexter S. Haven, Paul C. Kendall

Reports

This is a report of work done by the Virginia Institute of Marine Science in accordance with an agreement with NUS Corporation, Pittsburg, Pennsylvania. The objective of this study was to determine on public bottoms the magnitude of the oyster and clam resource in the vicinity of the proposed refinery at Pig Point and along the proposed pipeline from Newport News to Pig Point. The area covered in this study was the width of the James and extended from just up-river of Craney Island to Candy Point. Included in this report is a review of production, MSX, and pollution in …

Kentucky Warbler (Vol. 50, No. 2), Kentucky Library Research Collections

Kentucky Warbler

No abstract provided.

Nutrition Of Sheep Grazing Foothill Big Game Range In Spring, Kurt J. Kotter

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Sheep with esophageal fistulas were used to determine the daily intake, nutritive content and digestibility of forage at three periods and two stocking intensities during the spring of 1972 on a typical foothill range in northern Utah.

Heavy grazing under a season-long regime did not influence the concentrations of dietary chemical components when compared to moderate grazing; however, it did depress the digestibility of cellulose and organic matter. There was a significant decline in the dietary chemical components due to forage maturation. Digestibility of organic matter and cellulose were significantly higher in the early spring as compared to late spring. …

Manufacture Of Monterey Cheese From Preacidified Milk, Faisal O. Mohamed

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Whole milk acidified to pH 5.3 with hydrochloric acid was used for the manufacture of Monterey cheese. The milk was inoculated with one and one-half percent lactic starter and set with 12.5 ml rennet per 1000 pounds of milk. Normal washing treatments resulted in cheese with moisture in excess of 44 percent. Moisture content was brought below 44 percent by using wash water at a temperature such that the water-curd-whey mixture was 35 C. The pH of cheese made by preacidification was all between 5.21 and 5.09. No acid defects were encountered. Preacidification eliminated chance of spoilage or losses caused …

Vocalizations In A Population Of Green-Tailed Towhees (Chlorura Chlorura), Timothy Andrus Burr

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Studies of vocalizations in a montane population of Green-Tailed Towhees were conducted during the summer months of 1971 and 1972 in Cache County, Utah. The song and call repertoiries of 10 breeding pairs were recorded and analyzed on a sound spectograph.

Males averaged 8.7 different song and 18.2 different not types. Song variation on the population level is high (58 different songs) but the sharing of these songs among the males is low (22.4). Populational note structure is equally diverse but reveals a greater degree of sharing (75%).

Both males and females used three calls, the meow, tick, …

An Evaluation Of In-Stream Structures Designed To Provide Fish Habitat, Charles H. Call Jr.

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

In-stream concrete structures were studied through model tests and river tests. The model studies indicated that four designs provided good habitat in the model stream. These structures were the inverted weir, the "V" structure, the slab with legs and the cylinder. Through the river studies it was determined that these structures did not influence enough of the total river area to be effective in providing good fish habitat. Also an appreciable amount of yearly maintenance would be required to free the structures from silting in, debris, and vandalism. The slab with legs was the only promising structure.

The Fresh-Water Mussel Industry Of The Lower Tennessee River: Ecology & Future, Randall Grace

Masters Theses & Specialist Projects

The fresh-water mussel industry of the Tennessee River is nearing an end. Overharvesting, habitat alterations, and pollution are the major contributors to the depletion of the mussel resource, upon which the shell industry is based. A history of unconcern by shell harvesters and weak conservation enforcement by governmental agencies, has left the major waterways of the United States nearly void of commercial clams. The lower Tennessee River presently supplies the mussel industry with nearly all the important species of mollusks. If this industry is to be maintained in the United States, ways to preserve and propagate the mussel population must …

Annotated Checklist Of Mammals Of The Yucatan Peninsula, Mexico. Iii. Marsupialia, Insectivora, Primates, Edentata, Lagomorpha, J. Knox Jones, Hugh H. Genoways, James D. Smith

University of Nebraska State Museum: Mammalogy Papers

This is the third in a series of papers detailing the distribution of mammalian species occurring on the Yucatan Peninsula of Mexico. The present paper deals with 12 native species belonging to the following orders: Marsupialia, six; Insectivora, one; Primates, two; Edentata, two; Lagomorpha, one. None of these species is endemic to the peninsula, although it constitutes the major part of the geographic range of Alouatta pigra. Endemic subspecies include Didelphis virginiana yucatanensis, Marmosa mexicana mayensis, and Sylvilagus floridanus yucatanicus.

Annotated Checklist Of Mammals Of The Yucatán Peninsula, México. Ii. Rodentia, J. Knox Jones Jr., Hugh H. Genoways, Timothy E. Lawlor

University of Nebraska State Museum: Mammalogy Papers

The Yucatán Peninsula, as encompassed in this series of papers, includes the Mexican states of Campeche and Yucatán, and the Federal Territory of Quintana Roo. This region is a low-lying plain that rises gently in elevation from north to south. It is surrounded on three sides by water and bounded on the south by British Honduras (i.e. Belize), Guatemala, and the Mexican state of Tabasco. The vegetation of the peninsula increases in height from north to south and from the coast inland. Generally, forest to the north is xerophilic, but that of the southern part of the peninsula is tall, …

A Survey Of The Herpetofauna Of The Upper Lick Fork Watershed, Rowan County, Kentucky, Ronald A. Bertram

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 Ronald A. Bertram on April 3,1974.

Cedarburg Bog -A National Natural Landmark, Forest Sterns, Diane Ringger

Field Station Bulletins

The Cedarburg Bog and adjoining upland beech woods were designated, with nine other Wisconsin locations, as National Natural Landmarks. The other sites are the Wyalusing Hardwood Forest in Grant County, Summerton Bog in Marquette County, the Kakagon Sloughs in Ashland County, Abraham's Woods in Green County, Spruce Lake Bog in Fond du Lac County, the Flambeau River Hardwood Forest in Sawyer County, the Finnerud Pine Forest in Oneida County, the Chippewa River Bottoms in Buffalo County and the Chiwaukee Prairie in Kenosha County. Previously, the Ridges Sanctuary in Door County was the only Wisconsin site included.

A Study Of Aquatic Hyphomycetes Of Southeastern Wisconsin, John W. Baxter, Juanita Bronaugh

Field Station Bulletins

This paper presents a portion of the results of a distributional and ecological study of aquatic Hyphomycetes in seven counties of southeastern Wisconsin. Results of the water chemistry studies and laboratory studies on the physiology of these fungi will be published separately in Mycopathologia et Mycologia Applicata. Part of this research was supported by a grant from the Graduate Faculty Research Committee. In the present investigation 28 species, representing 21 genera, were found growing on submerged decaying leaves in streams, lakes and bogs. Three previously undescribed species were found as loose spores in foam samples from Cedar Creek and Sauk …

Dispersal Movements Of Juvenile Black-Capped Chickadees, John R. Meyer, Charles M. Weise

Field Station Bulletins

To learn more about Chickadee dispersal this study was undertaken from the summer of 1970 through the summer of 1973, involving the color-banded population of Black-capped Chickadees at the UW-M Cedar-Sauk Field Station described by Weise (1971). The most intensively studied birds were located in about 26 hectares of upland beech-maple forest and about 30 hectares of the cedar-tamarack bog forest at and immediately surrounding the Field Station. The territories of the breeding pairs in these areas were mapped, and as many nests as possible were located. The development of the young in accessible nests was followed, and just before …

A Taxonomic Study Of The Western Collared Lizards, Crotaphytus Collaris And Crotaphytus Insularis, Nathan M. Smith, Wilmer W. Tanner

Brigham Young University Science Bulletin, Biological Series

The heterogeneous nature of the collared lizards west of the Colorado River prompted this study. Samples from known populations of C. c. auriceps, C. c. baileyi, and C. c. fruscus were used as a base for defining the western populations. External morphology and cranial morphology were compared by cluster, canonical, and discriminant analyses.

Results of these analyses show a western complex of four populations which are distinct from the three base populations of the collaris complex. Members within the western complex are distinguishable with at least 90 percent reliability by discriminant analysis. Because of intergradation patterns seen in western Sonora, …

A Comparison Of Meteorologic Measurements From Irrigated And Non-Irrigated Plots, Provo, Ut, 1970–1972, Ferron L. Andersen, Phil D. Wright, J. Carl Fox

Brigham Young University Science Bulletin, Biological Series

A comparative study of micrometeorologic conditions on irrigated and non-irrigated pasture plots was conducted at Provo, Utah, from 1970 to 1972. Daily measurements were taken of the following: precipitation cither as rain or snow, new snowfall and total snow depth during the winter; relative humidity in a standard weather shelter; number of hours at maximum relative humidity; cloud cover each morning; potential evaporation; total wind 1 m above ground level; temperature extremes in a standard weather shelter; and temperatures both on irrigated and non-irrigated plots with sensing devices located 5 cm beneath soil surface under grass cover, at soil surface …

Front Matter, Vol. 19 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Front Matter, Vol. 19 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

End Matter, Vol. 19 No. 4

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

End Matter, Vol. 19 No. 3

Brigham Young University Science Bulletin, Biological Series

No abstract provided.

Finitely Generated Modules Over Bezout Ringsrwiegand@Unl.Edu, Roger Wiegand, Sylvia Wiegand

Nebraska Cooperative Fish and Wildlife Research Unit: Staff Publications

Let R be a Bezout ring (a commutative ring in which all finitely generated ideals are principal), and let M be a finitely generated R -module. We will study questions of the following sort: (A) If every localization of M can be generated by n elements, can M itself be generated by n elements? (B) If M 0 R m = Rn for some m, n, is Af necessarily free? (C) If every localization of M has an element with zero annihilator, does M itself have such an element? We will answer these and related questions for various familiar classes …