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J. C. Penney: The Man, The Store And American Agriculture (Under Contract), David Delbert Kruger 2017 University of Wyoming

J. C. Penney: The Man, The Store And American Agriculture (Under Contract), David Delbert Kruger

David Delbert Kruger

No abstract provided.


Does Personality Similarity In Bottlenose Dolphin Pairs Influence Dyadic Bond Characteristics?, Kelsey R. Moreno 2017 University of Southern Mississippi

Does Personality Similarity In Bottlenose Dolphin Pairs Influence Dyadic Bond Characteristics?, Kelsey R. Moreno

Master's Theses

Social structures are critical to the success of many species and have repercussions on health, well-being, and adaptation, yet little is known about the factors which shape these structures aside from ecology and life history strategies. Dyadic bonds are the basis of all social structures; however, mechanisms for formations of specific bonds or patterns in which individuals form which types of bonds have yet to be demonstrated. There is a variety of evidence indicating personality may be a factor in shaping bonds, but this relationship has not been explored with respect to bond components and is yet to be demonstrated ...


Do Pinnipeds Have Personality? Coding Harbor Seal (Phoca Vitulina) And California Sea Lion (Zalophus Californianus) Behavior Across Contexts., Amber J. de Vere 2017 University of Southern Mississippi

Do Pinnipeds Have Personality? Coding Harbor Seal (Phoca Vitulina) And California Sea Lion (Zalophus Californianus) Behavior Across Contexts., Amber J. De Vere

Master's Theses

Personality has now been studied in species as diverse as chimpanzees (King & Figueredo, 1997) and cuttlefish (Carere et al., 2015), but marine mammals remain vastly underrepresented in this area. A broad range of traits have been assessed only in the bottlenose dolphin (Highfilll & Kuczaj, 2007), while consistent individual differences in a few specific behaviors have been identified in grey seals (Robinson et al., 2015; Twiss & Franklin, 2010; Twiss, Culloch & Pomeroy, 2011; Twiss, Cairns, Culloch, Richards & Pomeroy, 2012). Furthermore, the context component of definitions of personality is not often assessed, despite evidence that animals may show individual patterns of consistency (Kuczaj, Highfill & Byerly, 2012). The current study therefore aimed to assess underlying personality factors and consistency across contexts in two unstudied marine mammal species, using behavioral coding.

Two California sea lion and three harbor seal personality factors were extracted using exploratory factor analysis. Two factors were broadly similar across species; the first, Boldness, resembled human Extraversion, and to some extent Openness. The second factor was labeled Routine Activity, and contained some Conscientiousness-like traits. Excitable-Interest emerged as a third factor in seals, but had low reliability. Species-specific patterns were also identified for interactive behaviors across two contexts. However, there was substantial individual variation in the frequency of these behaviors, as well as some animals who did not conform to species-level trends. This study therefore provides novel evidence for broad personality factors and ...


Heterogeneity Of Avian Breeding Habitat On Grazing Lands Of The Northern Great Plains, Maggi S. Sliwinski 2017 University of Nebraska-Lincoln

Heterogeneity Of Avian Breeding Habitat On Grazing Lands Of The Northern Great Plains, Maggi S. Sliwinski

Dissertations & Theses in Natural Resources

Native rangelands in the Great Plains are largely privately owned and used for beef production. Vegetation heterogeneity is important for maintaining biodiversity, but private land may be more homogenous than desired. My research had two components: 1) to examine whether a variety of grazing strategies created vegetation heterogeneity in a large, intact rangeland, and 2) to understand beef producers’ attitudes about vegetation heterogeneity.

First, I sampled vegetation structure, composition, and bird abundance at multiple plots on eleven management units in Cherry County, Nebraska. Units were managed with commonly used grazing strategies (e.g., short-duration grazing and season-long continuous grazing). I ...


From Disaster To Sustainability: The Story Of The Pacific Groundfish, Matthew Richards 2017 Utah State University

From Disaster To Sustainability: The Story Of The Pacific Groundfish, Matthew Richards

All Graduate Plan B and other Reports

This paper reviews the circumstances that led to the collapse of the Pacific groundfish fishery and the steps that fishery managers took to curb over-harvesting and bring the fishery back to sustainability. Fishery managers utilized various management tools such as a vessel buyback program, regulatory mechanisms, and market strategies to improve the available data on the fishery, improve safety for fishermen, and reduce harvest rates and overcapitalization. By employing a diverse range of measures, managers developed a system by with they successfully balanced conservation objectives and minimized adverse impacts to fishing communities. Overcapitalization and overharvest continue to degrade the health ...


Sparking A Dolphin's Curiosity: Individual Differences In Dolphins' Reactions To Surprising And Expectation-Violating Events, Malin Katarina Lilley 2017 The University of Southern Mississippi

Sparking A Dolphin's Curiosity: Individual Differences In Dolphins' Reactions To Surprising And Expectation-Violating Events, Malin Katarina Lilley

Master's Theses

Non-scientific literature consistently describes dolphins as “curious animals,” but there has been little systematic research on curiosity in dolphins. Curiosity in humans and certain non-human animal species, including birds and non-human primates, has been studied by examining individual differences in exploration and reactions to novel stimuli. Additionally, research has explored how human infants and non-human animals react when an event violates their expectations. The present study explored dolphins’ reactions to spontaneously surprising and expectation-violating stimuli. The reactions of dolphins, 15 bottlenose (Tursiops truncatus) and 6 rough-toothed (Steno bredanensis), at Gulf World Marine Park were analyzed in response to events that ...


The Effect Of Water Levels On Crayfish Aggression, Emory B. Johnson, Sarah E. Blase 2017 Pepperdine University

The Effect Of Water Levels On Crayfish Aggression, Emory B. Johnson, Sarah E. Blase

Seaver College Research And Scholarly Achievement Symposium

Crayfish are a very prevalent invasive species that affect many different environments all over the world. Crayfish, specifically Procambarus clarkii, are an invasive species that have currently taken a foothold in the Santa Monica mountains and are threatening native stream species. There is currently a severe drought occurring in the Santa Monica mountains. The drought has been reshaping many aquatic environments by limiting space and resources such as food and shelter. Crayfish are a very aggressive species and adversely affect the habitat they inhabit by rapidly colonizing, burrowing, and their voracious diets. Due to the adverse effects crayfish can have ...


The North American Whistling-Ducks, Pochards, And Stifftails, Paul A. Johnsgard 2017 University of Nebraska - Lincoln

The North American Whistling-Ducks, Pochards, And Stifftails, Paul A. Johnsgard

Zea E-Books

Although the 12 species representing three waterfowl tribes described in this volume are not closely related, they fortuitously provide an instructive example of adaptive evolutionary radiation within the much larger waterfowl lineage (the family Anatidae), especially as to their divergent morphologies, life histories, and social behaviors.

The whistling-ducks (Dendrocygna), with three known North American species, are notable for their permanent pair-bonds, extended biparental family care, and strong social cohesion. In contrast, males of the five typical pochards of North American diving ducks (Aythya) establish monogamous pair-bonds that are maintained only long enough to assure that the female’s eggs are ...


Adrift In A Sea Of Information About Sustainable Seafood: The Maine Consumer Perspective, Catherine V. Schmitt 2017 Maine Sea Grant

Adrift In A Sea Of Information About Sustainable Seafood: The Maine Consumer Perspective, Catherine V. Schmitt

Catherine Schmitt

The desire for a sustainable seafood industry that protects the environment and the future of fishing is certainly of interest to consumers, but even here there are conflicting standards, as Catherine Schmitt explores in this article.


Influence Of Condition On Maintenance Requirements Of Dairy Cattle, A. C. McCandlish, W. G. Gaessler 2017 Iowa State College

Influence Of Condition On Maintenance Requirements Of Dairy Cattle, A. C. Mccandlish, W. G. Gaessler

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

The ration of the dairy cow is used for maintenance, growth, the formation of body fat, the building up of the foetus and milk production, so the problem of feed utilizaton is a complicated one. 'rhe maintenance ration is more easily studied than are the requirements for growth and productive purposes and yet many of the factors controlling it are not thoroly understood.

Condition in dairy cattle has received little attention in investigational work and its influence on the maintenance requirements of animals has not been studied. In fact, the influence of condition on the maintenance requirements of all classe ...


The Volatile Acid Production Of Starters And Of Organisms Isolated From Them, B. W. Hammer, D. E. Bailey 2017 Iowa State College

The Volatile Acid Production Of Starters And Of Organisms Isolated From Them, B. W. Hammer, D. E. Bailey

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

The introduction of starters represents one of the distinct advances made in the field of dairying. Altho starters have been widely used their careful study has been very much neglected and the men who handle them extensively are often unable to explain the results obtained. The increasing use that is being made of starters in the manufacture of butter, various types of cheese, and fermented milk drinks makes it essential that they be studied with the idea of securing information regarding the reasons for the variations that occur in the quality. The present paper gives the results secured in a ...


Studies On Formation Of Gas In Sweetened Condensed Milk, B. W. Hammer 2017 Iowa State College

Studies On Formation Of Gas In Sweetened Condensed Milk, B. W. Hammer

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

In foods treated in various ways for their preservation, microorganisms that can resist conditions that the great majority of micro-organisms cannot withstand, occasionally develop and bring about undesirable changes. These changes are common in foods that have been subjected to heat and are the results of the presence of organisms that have the ability to resist temperatures that usually effectively sterilize the product in question. In sweetened condensed milk, which is presumably preserved by the addition of high percentages of sucrose, abnormal changes sometimes occur as a result of the presence of organisms that have the ability to develop in ...


Studies On Color In Swine, Orren Lloyd-Jones, John M. Evvard 2017 Iowa State College

Studies On Color In Swine, Orren Lloyd-Jones, John M. Evvard

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

In 1913 an investigation was started at the Iowa experiment station in ' the laboratories of the animal husbandry section, which aimed toward aiding in a genetic analysis of the belt pattern in Hampshire swine. The crosses, which have already involved many hundreds of pigs, have dealt entirely with the Duroc-Jersey and the Hampshire breeds. The breed standard describes the Hampshires as "black with the exception of a white belt encircling the body, including the fore legs," while the Duroc-Jersey is described as being "cherry red without other admixtures." The white belt of the Hampshire is far from being a fixed ...


Studies On Abnormal Evaporated Milk, B. W. Hammer 2017 Iowa State College

Studies On Abnormal Evaporated Milk, B. W. Hammer

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Evaporated milk, which depends for its keeping quality on the destruction of the con tamed micro-organisms by heat, occasionally spoils because of the presence of one or more organisms that resist the exposure employed in the sterilizer. The milk may undergo coagulation, gas formation or various other changes depending on the organism or organisms present. In this paper an unusual type of spoiling, mainly evident as an abnormal flavor and odor, altho there sometimes was coagulation, is reported and the organism causing it is described.


Appetite As A Guide In Feeding Dairy Calves, A. C. McCandlish 2017 Iowa State College

Appetite As A Guide In Feeding Dairy Calves, A. C. Mccandlish

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

Appetite, as an indicator of physiological needs, has been minimized by many investigators in the field of human and animal nutrition. From the beginning the whole animal kingdom h.as been controlled in its feeding problems only by appetite and environmental limitations of the food supply. Consequently, even tho the role of appetite be not of great importance under artificial experimental conditions, yet, if the broad facts of the case, the continued existence and multiplication of man and other animals, after countless aeons of feeding with appetite as their sole guide, be taken into consideration, it must be recognized as ...


Milk As The Sole Diet Of Ruminants, A. C. McCandlish 2017 Iowa State College

Milk As The Sole Diet Of Ruminants, A. C. Mccandlish

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

From time imemmorial milk has been regarded as the food best adapted to the complete nourishing of mammalia. It is the sole diet of all mammals during the earlier part of their postnatal development and is recognized as an excellent staple in the diet of the adult human, especially in the case of invalids. On the farm it is used extensively in the feeding of young animals, and in the case of the hog it is fed in large quantities to more mature individuals.

Within the last decade many investigations have been made concerning the nutritive value of milk and ...


Studies On The Clarification Of Milk—Ii, B. W. Hammer, A. J. Hauser 2017 Iowa State College

Studies On The Clarification Of Milk—Ii, B. W. Hammer, A. J. Hauser

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

In a former publication of this station the results obtained in a study of the clarification of milk with the DeLaval clarifier are presented. The data show: first that commonly, altho by no means constantly, the plates poured from clarified milk contained a larger number of colonies than plates poured from Unclarified milk of the same lot; this was undoubtedly due to a breaking up of the clumps of organisms and should be spoken of as an 'apparent increase since the large number of bacteria in the slime indicates that there was actually an elimination of organisms; second, that there ...


Composition And Digestibility Of Sudan Grass Hay, W. G. Gaessler, A. C. McCandlish 2017 Iowa State College

Composition And Digestibility Of Sudan Grass Hay, W. G. Gaessler, A. C. Mccandlish

Research Bulletin (Iowa Agriculture and Home Economics Experiment Station)

ThE.J introduction of Sudan grass (Andropogon sorglwrn var.) into the United States took place less than nine years ago, but since then this .crop has become widely known and its popularity is rapidly increasing. Sudan grass, being an annual, does not make a good pasture plant, but gives excellent results as a hay or soiling crop; it might also be successfully made into silage if mixed with a legume.


Some Taxonomic Corrections To The Genus Tityus C. L. Koch, 1836 (Scorpiones: Buthidae) In Hispaniola, Greater Antilles, Rolando Teruel 2017 Museo de Historia Natural “Tomás Romay”

Some Taxonomic Corrections To The Genus Tityus C. L. Koch, 1836 (Scorpiones: Buthidae) In Hispaniola, Greater Antilles, Rolando Teruel

Euscorpius

In the present paper, the taxonomic status of several Hispaniolan members of the genus Tityus C. L. Koch, 1966 is revised after examination of almost all primary types and abundant supplementary material. This resulted in six new synonymies, which involve both extant and fossil species. The extant taxa herein synonymized are Tityus anasilviae Armas et Abud, 2004 under Tityus ottenwalderi Armas, 1999, Tityus bahoruco Teruel et Armas, 2006 under Tityus crassimanus (Thorell, 1876), Tityus ebanoverde Armas, 1999 under Tityus elii Armas et Marcano, 1992, and Tityus septentrionalis Armas et Abud, 2004 under Tityus portoplatensis Armas et Marcano, 1992. The fossil ...


Early Emergence And Seasonality Of The Red-Bellied Snake (Storeria Occipitomaculata) Along The Platte River In South-Central Nebraska, Usa, Simon P. Tye, Keith Geluso, Mary J. Harner 2017 University of Nebraska, Kearney

Early Emergence And Seasonality Of The Red-Bellied Snake (Storeria Occipitomaculata) Along The Platte River In South-Central Nebraska, Usa, Simon P. Tye, Keith Geluso, Mary J. Harner

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

The Red-bellied Snake (Storeria occipitomaculata) primarily inhabits moist woodlands of eastern North America, with two disjunct populations occurring in the Great Plains, one of which is in south-central Nebraska. This species is listed as at-risk in Nebraska, in part, due to being uncommon with limited information available about the ecology and natural history of this isolated population. We amassed 48 observations of Red-bellied Snakes in Nebraska from museum specimens and published accounts, including our observations and others reported to us published herein. The previous earliest documented date of spring emergence was 6 April from a specimen collected in 1999. On ...


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