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Effect Of Maternal Dietary Energy Source On Glucose Homeostasis, Liver Glycogen And Carcass Lipid In The Neonatal Pig, R. D. Boyd, B. D. Moser, A. J. Lewis, E. R. Peo Jr., R. K. Johnson, R. D. Nimmo May 1981

Effect Of Maternal Dietary Energy Source On Glucose Homeostasis, Liver Glycogen And Carcass Lipid In The Neonatal Pig, R. D. Boyd, B. D. Moser, A. J. Lewis, E. R. Peo Jr., R. K. Johnson, R. D. Nimmo

Department of Animal Science: Faculty Publications

Two experiments were conducted to determine the effects of supplementary dietary energy (carbohydrate versus fat) fed to sows during late gestation on energy storage and glucose homeostasis in neonatal pigs. In the first experiment, 28 crossbred sows received one of two dietary treatments that were initiated on day 100 of gestation. The control group was fed daily 1.82 kg of a corn-soybean meal-based diet plus an additional .18 kg of cornstarch. Their counterparts were fed 1.82 kg of a cornsoybean meal diet containing 8% bleachable fancy tallow. The effect of maternal dietary energy source during late gestation on glucose homeostasis …

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Frontier Subsistence: An Example Of Nineteenth Century Fur Trade Food Procurement, Leslie A. Perry May 1981

Frontier Subsistence: An Example Of Nineteenth Century Fur Trade Food Procurement, Leslie A. Perry

Department of Anthropology: Theses and Student Research

The area of Frontier subsistence strategies holds considerable potential for explaining Euroamerican adaptation in North America between A.D. 1500 and 1900. This thesis examines the interrelationships between food procurement activities of a nineteenth century northern Plains fur trade post, Fort Union, and its environmental and economic settings. The subsistence strategy identified from ethnohistorical, archival, and archeological data illustrates the way in which inhabitants of the fort coped with a variable local environment and the demands of the fur trade. Evaluation of the effectiveness of the post's subsistence strategy indicates that both the subsistence strategy and the economic base of the …

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Exercise And Stress Tolerance, Richard A. Dienstbier, James Crabbe, Glen O. Johnson, William Thorland, Julie A. Jorgensen, Mitchel M. Sadar, Dennis C. Lavelle Apr 1981

Exercise And Stress Tolerance, Richard A. Dienstbier, James Crabbe, Glen O. Johnson, William Thorland, Julie A. Jorgensen, Mitchel M. Sadar, Dennis C. Lavelle

Department of Psychology: Faculty Publications

Presented in this paper is research designed in part to show that although moderate running by well-trained runners plays a significant role in reducing stress response to subsequently introduced stressors, running at the level of marathon competition alters psychological and physiological dispositions in a manner not conducive to reduced stress responses. In these demonstrations, the choice of our psychological and physiological dependent measures was guided by a larger theoretical framework concerning the relationship of exercise to temperament. We will discuss this larger view first because it provides a theoretical perspective that is useful in considering our specific hypotheses. We believe …

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A Comparison Of Reproductive Strategies Among Marine Snakes, Cliff A. Lemen, Harold K. Voris Apr 1981

A Comparison Of Reproductive Strategies Among Marine Snakes, Cliff A. Lemen, Harold K. Voris

School of Natural Resources: Faculty Publications

(1) Gravid females representing fourteen species of marine snakes were collected from four localities along the coast of Malaysia in 1975. The average clutch size ranged from 2.9 to 17.8 but most species had between three and seven young. The number of young produced and the size of gravid Lapemis hardwickii differed significantly at two sites in the Straits of Malacca. Eight species showed a significantly positive relationship between the number of oviducal eggs and female weight. The rate of infertility among ten species ranged from 4.5 to 20%.

(2) Sex ratios in the collections varied significantly through time and …

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Agricultural Experiment Station News April 1981 Apr 1981

Agricultural Experiment Station News April 1981

Agricultural Research Division: News and Annual Reports

CONTENTS:
From the Director's Desk
Sahs Sez
Grants and Contracts
Projects Approved
NEBRASKA AGRICULTURAL EXPERIMENT STATION PUBLICATIONS - July 1981
Journal Abstracts - Submitted for Publication
BULLETINS PRINTED

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The White Mustang Of The Prairies, Elizabeth Atwood-Lawrence Apr 1981

The White Mustang Of The Prairies, Elizabeth Atwood-Lawrence

Great Plains Quarterly (through 2013)

One of the most vivid and symbolically expressive legends in the annals of the American West is that of the White Mustang. Inhabiting the vast reaches of the western plains, the Stallion was said to have "paced from the mesas of Mexico to the Badlands of the Dakotas and even beyond, from the Brazos bottoms of eastern Texas to parks in the Rocky Mountains," during an interval extending from about 1825 to 1889.1 Alternately known as the "White Steed of the Prairies," the "Pacing White Stallion," the "Phantom White Horse," and "Ghost Horse of the Plains," his story occurs …

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Mulford And Bower: Myth And History In The Early Western, William A. Bloodworth Jr. Apr 1981

Mulford And Bower: Myth And History In The Early Western, William A. Bloodworth Jr.

Great Plains Quarterly (through 2013)

With the exception of commentary on Owen Wister and The Virginian (1902), surprisingly little has been written about popular western novels published before world War I.1 Yet it was writers following in the wake of The Virginian's popularity who really developed and defined the mass-audience western of commercial prospects and formulaic content. B. M. Bower, Clarence Mulford, William McCleod Raine, and Charles Alden Seltzer prepared the way for the later and greater popularity of Zane Grey, whose books first became best-sellers between 1912 and 1917; for the prolific productions of pulp writers like Max Brand after 1918; and …

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Genetic And Phenotypic Relationships Between Pubertal And Growth Characteristics Of Gilts, L. K. Hutchens, R. L. Hintz, R. K. Johnson Apr 1981

Genetic And Phenotypic Relationships Between Pubertal And Growth Characteristics Of Gilts, L. K. Hutchens, R. L. Hintz, R. K. Johnson

Department of Animal Science: Faculty Publications

Data on 737 crossbred and purebred gilts were used to obtain heritability estimates for age at puberty (AGEPUB) and weight at puberty (WTPUB) and their genetic and phenotypic correlations with birth weight (BW), weaning weight (WW), postweaning daily gain (ADG), adjusted age at 90.7 kg (AGE) and adjusted backfat at 90.7 kg (BF). The heritability estimates for AGEPUB were low to moderate (.19 and .40, based upon paternal and maternal half-sib estimates, respectively.) The genetic (rg) and phenotypic (rp) correlations between AGEPUB and BW (rg = -.07; rp = -.09), WW (rg = -.25; rp = …

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Hemmorrhagic Lesions In Stomach Of Rhesus Monkey Caused By Piscine Ascaridoid Nematode, Robin M. Overstreet, George W. Meyer Apr 1981

Hemmorrhagic Lesions In Stomach Of Rhesus Monkey Caused By Piscine Ascaridoid Nematode, Robin M. Overstreet, George W. Meyer

Harold W. Manter Laboratory of Parasitology: Faculty Publications

Within a few hours after being administered to the rhesus monkey (Macaca mulatta), Hysterothylacium type MB larvae penetrated the stomach wall, causing hemorrhage and attracting eosinophils. Inocula of up to 300 larvae, however, did not cause peripheral hypereosinophilia. This species is the first ascaridoid which normally matures in fish that has been shown to penetrate the alimentary tract of a primate. Consequently, human consumption of raw seafood from at least the northern Gulf of Mexico free from infections with Anisakis spp., Phocanema decipiens, or other species that mature in mammals or birds does not necessarily assure freedom …

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A Multivariate Study Of The Family Molossidae (Mammalia, Chiroptera) : Morphology, Ecology, Evolution, Patricia W. Freeman Mar 1981

A Multivariate Study Of The Family Molossidae (Mammalia, Chiroptera) : Morphology, Ecology, Evolution, Patricia W. Freeman

University of Nebraska State Museum: Mammalogy Papers

The purpose of my study is to examine as many species of the family Molossidae as possible and to determine, with the aid of numerical methods, what natural groups exist within the family. Sneath & Sokal (1973) discuss the methods and reasons for this kind of analysis. A natural group of organisms as here defined is one in which its members share a close phenetic relationship. Phenetic relationship is defined as "similarity (resemblance) based on a set of phenotypic characteristics of the objects or organisms under study," (Sneath & Sokal, 1973, p. 29), and is distinct in definition from phylogenetic …

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Museums Are More Than Elephant Graveyards, Patricia W. Freeman Mar 1981

Museums Are More Than Elephant Graveyards, Patricia W. Freeman

University of Nebraska State Museum: Mammalogy Papers

I suspect many people do not know what natural history museums are all about. These museums hold nature's works of art, instead of just man's. There are not many museums of natural history and those few are usually in big cities.

Field Museum of National History in Chicago is one of the largest in the world, along with the British Museum of Natural History in London, the Smithsonian (U.S. National Museum) in Washington, and the American Museum of Natural History in New York. These are the museums that have the actual skeletons of dinosaurs, or stuffed elephants, poised in combat, …

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Seasonal Variations In Movements And Habitat Use By Pine And Meadow Voles, Ralph E. Pagano, Dale M. Madison Mar 1981

Seasonal Variations In Movements And Habitat Use By Pine And Meadow Voles, Ralph E. Pagano, Dale M. Madison

Eastern Pine and Meadow Vole Symposia

Free-ranging pine voles (Microtus pinetorum) and meadow voles (M. pennsylvanicus) were radio-tracked in a maintained apple orchard environment in August and December 1980. Meadow voles maintained larger home ranges than pine voles in the summer, but had similar-sized ranges in December. The home ranges for both species decreased with the onset of winter. Pine and meadow voles showed a strong tendency to remain within rows and to restrict most of their movement to areas beneath the canopy. Despite some overlap in space use between the species, the movements of both vole species suggested mutual avoidance. Differences …

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Influence Of Apples On Population Density, Body Weights, And Reproductive Organ Weights In Pine Voles, J. J. Hasbrouck, F. A. Servello, A. R. Tipton, R. L. Kirkpatrick Mar 1981

Influence Of Apples On Population Density, Body Weights, And Reproductive Organ Weights In Pine Voles, J. J. Hasbrouck, F. A. Servello, A. R. Tipton, R. L. Kirkpatrick

Eastern Pine and Meadow Vole Symposia

Previous field studies at Virginia Tech have found differences in reproductive output of pine voles in abandoned and maintained orchards. Cengel et a1. (1978), trapping in northern Virginia, found higher levels of reproduction in a maintained orchard than in an abandoned orchard. The breeding season of voles extended into winter in the maintained orchard but ceased in late fall and winter in the abandoned orchard. Noffsinger (1976), working in orchards near Roanoke, Virginia, found a higher fatality rate in the maintained orchard and a year-round breeding season; however, the percentage of pregnant females declined in winter. Reproduction was lower in …

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Spacing, Movements, And Social Organization Of A Free-Ranging Population Of Pine Voles Microtus Pinetorum, Randall W. Fitzgerald, Dale M. Madison Mar 1981

Spacing, Movements, And Social Organization Of A Free-Ranging Population Of Pine Voles Microtus Pinetorum, Randall W. Fitzgerald, Dale M. Madison

Eastern Pine and Meadow Vole Symposia

Free-ranging pine voles (Microtus pinetorum) were radio-tracked in a maintained orchard environment from August to November 1980. Pine voles existed in discrete non-overlapping family units with an average of 6.5 individuals per family unit. Home ranges of family members overlapped extensively, and all the members of a single family unit utilized one or two communal nest sites within the family's territory. Males ranged slightly farther than females, and females spent more time in the nest than did males. The mating system appeared to be promiscuous with a high degree of social tolerance among pregnant and lactating females and …

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Digestibility And Nutritional Quality Of Apple Tree Roots And Other Orchard Forages Of The Pine Vole, F. A. Servello, R. L. Kirkpatrick, K. E. Webb Jr. Mar 1981

Digestibility And Nutritional Quality Of Apple Tree Roots And Other Orchard Forages Of The Pine Vole, F. A. Servello, R. L. Kirkpatrick, K. E. Webb Jr.

Eastern Pine and Meadow Vole Symposia

Analysis of the seasonal food habits of pine voles (Microtus pinetorum) by Cengel et a1. (1978) revealed that apple tree root consumption occurs only during winter months. Increased root consumption in the winter has been postulated to be due to a decrease in the quantity and quality of other foods in orchards. However, the normal translocation of carbohydrates into the root systems of trees during the dormant season may improve the quality of apple tree roots as a food source for voles. One objective of the pine vole nutrition studies at Virginia Polytechnic Institute and State University is …

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Social Behavior Of The Pine Vole (Pitymys Pinetorum): I. Activity Patterns Of Mated Pine Voles In Semi-Natural Environments, Philip O. Renzullo, Milo E. Richmond Mar 1981

Social Behavior Of The Pine Vole (Pitymys Pinetorum): I. Activity Patterns Of Mated Pine Voles In Semi-Natural Environments, Philip O. Renzullo, Milo E. Richmond

Eastern Pine and Meadow Vole Symposia

The root damage resulting from pine vole (Pitymys pinetorum) infestation of apple orchards remains a major vertebrate pest problem. Currently, research effort is being directed at habitat management and at toxic bait development and application as two potentially cost-effective methods for control of these rodents. Recently, investigations have begun into the detailed relationships between the pine vole's physiology and it's habitat in an effort to understand and perhaps disrupt the seemingly ideal balance achieved by the animal in apple orchard situations. In addition to these approaches, which have possible immediate application, one area of pine vole biology that …

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Analysis Of Seasonal Dynamics Of Pine Vole Populations In Two Virginia Orchards, S. B. Lindquist, A. R. Tipton, G. K. Yarrow, J. J. Hasbrouck Mar 1981

Analysis Of Seasonal Dynamics Of Pine Vole Populations In Two Virginia Orchards, S. B. Lindquist, A. R. Tipton, G. K. Yarrow, J. J. Hasbrouck

Eastern Pine and Meadow Vole Symposia

Presently, V. P. I. and S.U. is involved in a three year multi-disciplinary project to study pine and meadow vole ecology, behavior, and control (see additional V.P.I, and S. U. papers in Proc. Fifth East. Pine and Meadow Vole Symposium). In conjunction with this research, a long-term field study has been initiated to collect seasonal data on vole densities, survivorship, and reproduction in two Virginia apple orchards. The use of these data will be fourfold: (1) to gain insight into the dynamics of Virginia vole populations; (2) to act as a reference (or control) for future field experiments involving manipulation …

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Social Context Affects Expression Of Conditioned Taste Aversions During Grooming By Pine Voles: Implications For Animal Damage Control, J. Russell Mason, Lynette A. Geyer, Christine A. Kornet Mar 1981

Social Context Affects Expression Of Conditioned Taste Aversions During Grooming By Pine Voles: Implications For Animal Damage Control, J. Russell Mason, Lynette A. Geyer, Christine A. Kornet

Eastern Pine and Meadow Vole Symposia

Rodents typically show conditioned aversions to substances previously associated with illness. Aversions can be observed when the tastant is presented in food, water and, for rats, when the tastant is smeared unilaterally on the animal's flank and ingested during auto-grooming. Such results have important implications for rodent control. For that reason, others have investigated whether voles and mice continue to groom when tastants associated with sickness are smeared on their fur. Investigations have shown that grooming persists in the presence of the conditioned stimuli even though strong aversions are shown toward the same tastants in a drinking context. The question …

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Social Organizations And Reproduction In Freely Reproducing Colonies Of Pine Voles In The Laboratory, Margaret H. Schadler Mar 1981

Social Organizations And Reproduction In Freely Reproducing Colonies Of Pine Voles In The Laboratory, Margaret H. Schadler

Eastern Pine and Meadow Vole Symposia

Freely reproducing colonies of pine voles reared in confined laboratory enclosures have a definite social organization and a predictable pattern of reproduction which results in limitation of population size. Colonies that were established in the laboratory with a single breeding pair showed that: 1) populations were self-limiting, 2) rank order existed with the founding female occupying a dominant position in the hierarchy, 3) reproduction was generally confined to the founding female and 4) the non-reproducing members of the colony showed that they did become reproductive when they were paired with normal mates. This paper is a preliminary report of the …

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A System For The Observation Of Voles Under Semi-Natural Conditions With Applications To: Social Interactions, Competition, Food Habits, Habitat Preference And Bait Accpetance., D. S. Wilkie, M. A. Novak Mar 1981

A System For The Observation Of Voles Under Semi-Natural Conditions With Applications To: Social Interactions, Competition, Food Habits, Habitat Preference And Bait Accpetance., D. S. Wilkie, M. A. Novak

Eastern Pine and Meadow Vole Symposia

A laboratory system to study microtine rodents has been developed that avoids many of the intrinsic restrictions of earlier laboratory and field studies. The system is composed of two interconnected plexiglas tables with a soil substrate and hay cover. The system permits unconstrained visual observation of voles as they move within a runway network of their own construction. The flexibility of the system facilitates its use in various avenues of microtine research.

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Growth And Development Rates Of Microtus Pinetorum Under Different Photoperiods, T. L. Derting, J. A. Cransford Mar 1981

Growth And Development Rates Of Microtus Pinetorum Under Different Photoperiods, T. L. Derting, J. A. Cransford

Eastern Pine and Meadow Vole Symposia

Photo-period and nutrition are important variables affecting reproductive activity and growth in many rodents. Field and laboratory studies indicate that long photo-period (spring-summer) cause Increased growth while short photo-periods (fall-winter) inhibit these processes. In the montane vole (Microtus montanus) recently weaned animals gain weight at a much lower rate under short photo-periods or in total darkness than under long photo-periods (Vaughan et al., 1973; Peterborg, 1978). Adult M. montanus had more offspring and larger mean litter sizes under LD 18:6 than LD 6:18 (Pinter & Negus, 1965). Similarly, long (LD 16:8) or increasing photo-periods stimulated the onset of …

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Frontmatter Mar 1981

Frontmatter

Eastern Pine and Meadow Vole Symposia

Frontmatter

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Proceedings Of The Fifth Eastern Pine And Meadow Vole Symposium, Gettysburg, Pa, March 4-5, 1981 Mar 1981

Proceedings Of The Fifth Eastern Pine And Meadow Vole Symposium, Gettysburg, Pa, March 4-5, 1981

Eastern Pine and Meadow Vole Symposia

Entire symposium.

HIGHLIGHTS OF THE FIFTH EASTERN PINE AND MEADOW VOLE SYMPOSIUM

The Fifth Eastern Pine and Meadow Vole Symposium was held at the Sheraton Inn-Gettysburg, Gettysburg, Pennsylvania March 4 and 5, 1981, for the purpose of assessing the current status of research, extension, and industry programs relating to the problem of vole damage to fruit trees. The meeting was intended to create a problem solving atmosphere in which growers; various governmental agencies such as EPA, USDA, USDI; the chemical industry; and university personnel could observe the cur¬rent thrusts of research and extension programs and their potential impact on future …

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Experimental Results Of Chlorophacinone Ground Sprays In North Carolina, William T. Sullivan Jr. Mar 1981

Experimental Results Of Chlorophacinone Ground Sprays In North Carolina, William T. Sullivan Jr.

Eastern Pine and Meadow Vole Symposia

Field experiments with chlorophacinone (CPN) ground sprays seem to be more effective in control of pine voles in North Carolina orchards when the percentage grass cover under tree drip lines is high. Preliminary laboratory results seem to confirm this observation.

Our group has carried out a number of field trials of the efficacy of ground sprays for controlling pine voles in orchards. In reviewing these tests with special reference to inconsistency of results with chlorophacinone (Hayne 1977) an apparent relationship to the amount of grass cover was noted, and laboratory trials were started to test this question.

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An Approach To Determine The Economic Threshold Level For Pine Voles, Stephen B. White, Theodore L. Huller Mar 1981

An Approach To Determine The Economic Threshold Level For Pine Voles, Stephen B. White, Theodore L. Huller

Eastern Pine and Meadow Vole Symposia

The effectiveness of orchard management, as in any agricultural system, is judged on the total quantity and quality of the produce and on the financial return per unit of investment. Decisions affecting orchard management are based ultimately on economic factors.

This economic criterion should, therefore, be applied to all orchard pest management decisions—including control of the pine vole (Pitymys pinetorum). The purpose of this paper is to describe an approach we are taking to identify factors useful in estimating the economic threshold which can form the basis for cost-effective management of the pine vole and the meadow vole …

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Colonization Of An Abandoned Orchard By Pine Voles (Microtus Pinetorum), Jack A. Cranford, J. Harrison, T. L. Derting Mar 1981

Colonization Of An Abandoned Orchard By Pine Voles (Microtus Pinetorum), Jack A. Cranford, J. Harrison, T. L. Derting

Eastern Pine and Meadow Vole Symposia

Habitat selection by pine voles (Microtus pinetorum) has been attributed to cover density (Goertz, 1971; Paul, 1970) soil condition (Benton, 1955; Fisher and Anthony, 1980), and food resources (Noffsinger, 1976; Paul, 1970). Goertz (1971) reported that pine voles were distributed in diverse habitats, but there was a close correlation with height and diversity of grass. Miller and Getz (1969) found populations in sloping upland woods, Benton (1955) in dry woods, and Paul (1970) in hardwood slopes with a close correlation between distribution and amount of ground cover. Soil type has been examined by Benton (1955) and Fisher and …

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Effects Of Tastants On Caching, Gnawing, Grooming And Taste Aversions In Pine Voles (Microtus Pinetorum) And Meadow Voles (M. Pennsylvanicus), Lynette A. Geyer, Christine Kornet Mar 1981

Effects Of Tastants On Caching, Gnawing, Grooming And Taste Aversions In Pine Voles (Microtus Pinetorum) And Meadow Voles (M. Pennsylvanicus), Lynette A. Geyer, Christine Kornet

Eastern Pine and Meadow Vole Symposia

Several behaviors of pine and meadow voles were studied, specifically those affecting the role of taste in ingestion. These behaviors include: 1) caching, 2) gnawing, 3) grooming, and 4) taste aversions.

Male pine voles cached more than females, particularly when housed with females. Solitary females more than those housed in mixed sex pairs. When presented with peanuts and pine dowels in one-hour tests, pine voles cached peanuts first; the addition of flavorants did not affect the sequence in which they were cached. In six-hour tests, however, sucrose— and oil-soaked items were cached first.

Gnawing by pine voles, like caching, was …

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Comparison Of Sampling Designs For Vole Population Studies, Donna Bruns Stockrahm, Jay Mcaninch, John D. Harder Mar 1981

Comparison Of Sampling Designs For Vole Population Studies, Donna Bruns Stockrahm, Jay Mcaninch, John D. Harder

Eastern Pine and Meadow Vole Symposia

In the summer of 1980 we initiated a large-scale vole population study in the lower Hudson Valley of New York and had questions regarding trapping designs and sampling procedures. Would samples reflect populations as they occurred in the orchard or would results merely be artifacts of the trapping design?

Renzulli et a1. (1980) examined how time interval between trapping periods, trap spacing, and grid size affected demographic estimates in meadow voles, Microtus pennsylvanicus, in non-orchard habitats. In other small mammal studies conducted in non-orchard habitats, 2 traps per station are often utilized to avoid the exclusion of animals or …

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Water Metabolism In The Pine Vole, Pitymys Pinetorum, Donald H. Rhodes, Milo E. Richmond Mar 1981

Water Metabolism In The Pine Vole, Pitymys Pinetorum, Donald H. Rhodes, Milo E. Richmond

Eastern Pine and Meadow Vole Symposia

Orchard substrates, in general, provide excellent conditions for pine vole (Pitymys pinetorum) growth and reproduction as indicated by the distribution and abundance of pine voles within orchard situations in the eastern United States (Gourley and Richmond, 1972). However, the specific characteristics which are attractive to pine voles and facilitate their proliferation are poorly understood. The basis for selection of any particular habitat component by the pine vole is in large part a function of the vole's physiological requirements, because the physiological needs of the animals must be met by appropriate habitat resources. Thus, information on specific habitat parameters …

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Effect Of Photoperiod On Activity Patterns In Pine Voles (Microtus Pinetorum), Jack A. Cranford Mar 1981

Effect Of Photoperiod On Activity Patterns In Pine Voles (Microtus Pinetorum), Jack A. Cranford

Eastern Pine and Meadow Vole Symposia

Light is an environmental variable which has considerable effect on small mammal activity patterns. This constantly repeating 24 hour signal provides information on a daily basis and has been shown to synchronize all physiological patterns in an animals existence. Laboratory studies have shown that pine voles are slightly nocturnal (Pearson, 1947) or confined their activity to the hours of twilight and darkness (Werner, 1951). Both authors indicate that activity occurs in bouts of about 1 hour duration followed by an hour of rest. Benton (1955) observed from trapping that more activity occurred at night but cautioned that due to the …

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