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Articles 11251 - 11280 of 23004

Full-Text Articles in Social and Behavioral Sciences

Use Of Non-Human Primates In Cocaine Research, Raija H. Bettauer Jan 2016

Use Of Non-Human Primates In Cocaine Research, Raija H. Bettauer

Experimentation Collection

No abstract provided.


Use Of Qualitative Behaviour Assessment As An Indicator Of Welfare In Donkeys, Michela Minero, Emanuela Dalla Costa, Francesca Dai, Leigh Anne Margaret Murray, Elisabetta Canali, Françoise Wemelsfelder Jan 2016

Use Of Qualitative Behaviour Assessment As An Indicator Of Welfare In Donkeys, Michela Minero, Emanuela Dalla Costa, Francesca Dai, Leigh Anne Margaret Murray, Elisabetta Canali, Françoise Wemelsfelder

Animal Welfare Collection

One of the objectives of the Animal Welfare Indicators project was to develop animal-based indicators to assess donkey welfare, including their emotional state. This study aimed to develop a fixed rating scale of Qualitative Behaviour Assessment (QBA) for donkeys, to evaluate the inter-observer reliability when applied on-farm, and to assess whether the QBA outcomes correlate to other welfare measures.

A fixed list of 16 descriptors was designed on the basis of a consultation in a focus group. The fixed list was then used by four trained observers to score nine 2 min videos of groups of donkeys owned by six …


Thinking Pigs: Cognition, Emotion, And Personality, Lori Marino, Christina M. Colvin Jan 2016

Thinking Pigs: Cognition, Emotion, And Personality, Lori Marino, Christina M. Colvin

Mammalogy Collection

An exploration of the cognitive complexity of Sus domesticus, the domestic pig.


Mating Games Squid Play: Reproductive Behaviour And Sexual Skin Displays In Caribbean Reef Squid Sepioteuthis Sepioidea, Jennifer Mather Jan 2016

Mating Games Squid Play: Reproductive Behaviour And Sexual Skin Displays In Caribbean Reef Squid Sepioteuthis Sepioidea, Jennifer Mather

Reproductive Behavior Collection

Observation of the sexual interactions of Sepioteuthis sepioidea squid during the short reproductive stage of their lives showed a scramble competition system, with both male and female polygyny. Mature females were faithful to a specific location in the daytime, whereas males moved from group to group and formed short-term consortships with females. Males defended females from other males, particularly with an agonistic Zebra display. Male–female pairs exchanged Saddle-Stripe displays, after which males might display an on–off Flicker. There was considerable female choice. Only if a female responded to this display with a parallel Rocking action would she pair and would …


Hpi Reactivity Does Not Reflect Changes In Personality Among Trout Introduced To Bold Or Shy Social Groups, Jack S. Thomson, Phillip C. Watts, Tom G. Pottinger, Lynne U. Sneddon Jan 2016

Hpi Reactivity Does Not Reflect Changes In Personality Among Trout Introduced To Bold Or Shy Social Groups, Jack S. Thomson, Phillip C. Watts, Tom G. Pottinger, Lynne U. Sneddon

Social Behavior Collection

Physiological stress responses often correlate with personalities (e.g., boldness). However, this relationship can become decoupled, although the mechanisms underlying changes in this relationship are poorly understood. Here we quantify (1) how an individual’s boldness (response to novel objects) in rainbow trout, Oncorhynchus mykiss, changes in response to interactions with a population of either bold or shy conspecifics and we (2) measured associated post-stress cortisol levels. Initially-bold trout became shyer regardless of group composition, whereas shy trout remained shy demonstrating that bold individuals are more plastic. Stress-induced plasma cortisol reflected the original personality of fish but not the personality induced …


Dry Period Plane Of Energy: Effects On Glucose Tolerance In Transition Dairy Cows, S. Mann, F. A. Leal Yepes, M. Duplessis, J. J. Wakshlag, T. R. Overton, B. P. Cummings, D. V. Nydam Jan 2016

Dry Period Plane Of Energy: Effects On Glucose Tolerance In Transition Dairy Cows, S. Mann, F. A. Leal Yepes, M. Duplessis, J. J. Wakshlag, T. R. Overton, B. P. Cummings, D. V. Nydam

Physiology Collection

Overfeeding energy in the dry period can affect glucose metabolism and the energy balance of transition dairy cows with potential detrimental effects on the ability to successfully adapt to early lactation. The objectives of this study were to investigate the effect of different dry cow feeding strategies on glucose tolerance and on resting concentrations of blood glucose, glucagon, insulin, nonesterified fatty acids (NEFA), and β-hydroxybutyrate (BHB) in the peripartum period. Cows entering second or greater lactation were enrolled at dry-off (57 d before expected parturition) into 1 of 3 treatment groups following a randomized block design: cows …


Body Condition Score And Plane Of Nutrition Prepartum Affect Adipose Tissue Transcriptome Regulators Of Metabolism And Inflammation In Grazing Dairy Cows During The Transition Period, M. Vailati-Riboni, M. Kanwal, O. Bulgari, S. Meier, N. V. Priest, C. R. Burke, J. K. Kay, S. Mcdougall, M. D. Mitchell, C. G. Walker, M. Crookenden, A. Heiser, J. R. Roche, J. J. Loor Jan 2016

Body Condition Score And Plane Of Nutrition Prepartum Affect Adipose Tissue Transcriptome Regulators Of Metabolism And Inflammation In Grazing Dairy Cows During The Transition Period, M. Vailati-Riboni, M. Kanwal, O. Bulgari, S. Meier, N. V. Priest, C. R. Burke, J. K. Kay, S. Mcdougall, M. D. Mitchell, C. G. Walker, M. Crookenden, A. Heiser, J. R. Roche, J. J. Loor

Physiology Collection

Recent studies demonstrating a higher incidence of metabolic disorders after calving have challenged the management practice of increasing dietary energy density during the last ~3 wk prepartum. Despite our knowledge at the whole-animal level, the tissue-level mechanisms that are altered in response to feeding management prepartum remain unclear. Our hypothesis was that prepartum body condition score (BCS), in combination with feeding management, plays a central role in the peripartum changes associated with energy balance and inflammatory state. Twenty-eight mid-lactation grazing dairy cows of mixed age and breed were randomly allocated to 1 of 4 treatment groups in a 2 × …


Geographic Variability Of Octopus Insularis Diet: From Oceanic Island To Continental Populations, Tatiana S. Leite, Allan T. Batista, Françoise D. Lima, Jaciana C. Barbosa, Jennifer A. Mather Jan 2016

Geographic Variability Of Octopus Insularis Diet: From Oceanic Island To Continental Populations, Tatiana S. Leite, Allan T. Batista, Françoise D. Lima, Jaciana C. Barbosa, Jennifer A. Mather

Habitat and Trophic Ecology Collection

A predator’s choice of prey can be affected by many factors. We evaluated various influences on population dietary composition, individual specialization and size of prey in Octopus insularis populations from 2 continental and 4 insular locations. We expected that habitat diversity would lead to diet heterogeneity. Furthermore, in keeping with MacArthur & Wilson’s (1967) theory of island biogeography, we expected that diet diversity would be lower around islands than on the coast of the mainland. Both predictions were confirmed when prey remains from octopus middens were examined. The 2 continental areas exhibited a richer habitat diversity and a wider variety …


Journal Of The Arkansas Academy Of Science - Volume 70 2016, Academy Editors Jan 2016

Journal Of The Arkansas Academy Of Science - Volume 70 2016, Academy Editors

Journal of the Arkansas Academy of Science

No abstract provided.


Agroforestry Horizons: Experiences And Reflections: Report-Out, Steve Rasmussen Jan 2016

Agroforestry Horizons: Experiences And Reflections: Report-Out, Steve Rasmussen

United States Department of Agriculture, Forest Service / University of Nebraska-Lincoln: Faculty Publications

The USDA National Agroforestry Center (NAC) is charting a course for the next five years. As part of this process, NAC and the USDA Interagency Agroforestry Team hosted a meeting of leaders in the fields of agroforestry, agriculture, and forestry, from government, universities, and the private sector, to share experiences and insights on agroforestry opportunities and challenges. The meeting occurred on April 27th and 28th, 2016, in Washington, DC, and entailed presentations and discussions on current and potential roles of agroforestry in supporting water quality, soil health, economic diversification, food security, and pollinator/wildlife habitat. This report-out provides a summary of …


A Qualitative Analysis Of Service Delivery Of Potable Water Through Cooperatives: The Case Of Talaga Barangay Water Service Cooperative, Philippines, Arminga B. Oeria Jan 2016

A Qualitative Analysis Of Service Delivery Of Potable Water Through Cooperatives: The Case Of Talaga Barangay Water Service Cooperative, Philippines, Arminga B. Oeria

Journal of Economics, Management and Agricultural Development

This paper aims to demonstrate the important role of cooperatives in the provision and delivery of potable water to a community of households based on evidence from a case study of Talaga Barangay Water Service Cooperative (TBWSC) in Tanauan, Batangas. TBWSC is a water service type of cooperative that successfully provides its members with access to potable water. The case shows how social capital works in addressing a common need. Particularly, it presents the collaborative partnership between the government and the cooperative in implementing a waterworks project. The factors contributing to the success of water service delivery are the felt …


Review Of "Eye Of Newt And Toe Of Frog, Adder’S Fork And Lizards’ Leg, The Lore And Mythology Of Amphibians And Reptiles", Kay Etheridge Jan 2016

Review Of "Eye Of Newt And Toe Of Frog, Adder’S Fork And Lizards’ Leg, The Lore And Mythology Of Amphibians And Reptiles", Kay Etheridge

Biology Faculty Publications

A review of Marty Crump's book on the folklore surrounding reptiles and amphibians. Crump's book is a collection of tales and myths both ancient and contemporary, and a fascinating analysis of how humans perceive and sometimes revere snakes, frogs and other "loathsome" creatures.


The Spatial Distribution Of Terrestrial Stable Carbon Isotopes In North America, And The Impacts Of Spatial And Temporal Resolution On Static Ecological Models, Sydney M. Firmin Jan 2016

The Spatial Distribution Of Terrestrial Stable Carbon Isotopes In North America, And The Impacts Of Spatial And Temporal Resolution On Static Ecological Models, Sydney M. Firmin

Electronic Theses and Dissertations

Due to the unique spatial and temporal characteristics of ecological phenomena, the extent and grain size of spatial data sets essentially filter the observations. This thesis examines the impacts of temporal and spatial resolution on the modeling of terrestrial stable carbon isotopic landscapes (isoscapes). I model the distribution of leaf stable carbon isotope composition (delta13C) for the continent of North America at multiple temporal and spatial resolutions. I generate each delta13C isoscape variation by first predicting the relative abundance of C3/C4 vegetation cover using monthly climate grids, crop distribution/type grids, and remote sensing data of plant …


Comparing Remotely Sensed Pictometry® Web Based Slope Distance Estimates With In Situ Total Station And Tape Slope Distance Estimates, David Kulhavy, Daniel Unger, Yanli Zhang, Phillip Bedford, I-Kuai Hung Jan 2016

Comparing Remotely Sensed Pictometry® Web Based Slope Distance Estimates With In Situ Total Station And Tape Slope Distance Estimates, David Kulhavy, Daniel Unger, Yanli Zhang, Phillip Bedford, I-Kuai Hung

Faculty Publications

Slope distance was measured between the top of 30 light poles and their respective ground level coordinate identified within a central parking lot on the campus of Stephen F. Austin State University, Nacogdoches, Texas. Slope distance measured using Pictometry® hyperspatial 4-inch (10.2 centimeters) multispectral imagery within a web based interface was compared to in situ total station and tape measured slope distance. The range for mean slope distance for Pictometry®, total station, and tape measured slope distance was 0.05 meters. Mean slope distance was 15.36 meters, 15.37 meters, and 15.41 meters for Pictometry®, total station, …


Incorporating Applied Undergraduate Research In Senior To Graduate Level Remote Sensing Courses, Richard Henley, Daniel Unger, David Kulhavy, I-Kuai Hung Jan 2016

Incorporating Applied Undergraduate Research In Senior To Graduate Level Remote Sensing Courses, Richard Henley, Daniel Unger, David Kulhavy, I-Kuai Hung

Faculty Publications

An Arthur Temple College of Forestry and Agriculture (ATCOFA) senior spatial science undergraduate student engaged in a multi-course undergraduate research project to expand his expertise in remote sensing and assess the applied instruction methodology employed within ATCOFA. The project consisted of performing a change detection land-use/land-cover classification for Nacogdoches and Angelina counties in Texas using satellite imagery. The dates for the imagery were spaced approximately ten years apart and consisted of four different acquisitions between 1984 and 2013. The classification procedure followed and expanded upon a series of concrete theoretical remote sensing principles, transforming the four remotely sensed raster images …


An Analysis Of Virtual Place Learning/Navigation In Children And Young Adults Prenatally Exposed To Alcohol, Neil Christopher Dodge Jan 2016

An Analysis Of Virtual Place Learning/Navigation In Children And Young Adults Prenatally Exposed To Alcohol, Neil Christopher Dodge

Wayne State University Dissertations

Fetal alcohol spectrum disorder refers to the spectrum of disorders resulting from prenatal alcohol exposure and is the leading cause of preventable mental retardation. Rodent studies have found that prenatal alcohol exposure impairs performance on the Morris water maze. This task requires the rodent to use distal room cues to locate a hidden platform in a pool of opaque water. Successful performance on this task is dependent upon hippocampal function. Rodents prenatally exposed to alcohol are impaired on the Morris water maze and show damage to hippocampal neurons. A human analogue of the Morris water maze, the virtual water maze …


Voluntary Food Sharing In Pinyon Jays: The Role Of Reciprocity And Dominance, Juan F. Duque, Jeffrey R. Stevens Jan 2016

Voluntary Food Sharing In Pinyon Jays: The Role Of Reciprocity And Dominance, Juan F. Duque, Jeffrey R. Stevens

Jeffrey Stevens Publications

Food sharing offers a clear example of prosocial behavior, in which one individual’s actions benefit another. Researchers have proposed a range of hypotheses that explain why food sharing may occur among unrelated individuals. Two such hypotheses, reciprocity and dominance, have been tested in many species, including fish, corvids, rats, bats, and primates, showing that (1) recipients sometimes reciprocate sharing back to previous donors and (2) dominant individuals share more than subordinates. Although primates dominate the study of prosocial behavior, active donation of food is actually quite rare in primates. In contrast, several corvid species spontaneously share food much more frequently. …


Toddlers’ Word Learning From Contingent And Non-Contingent Video On Touchscreens, Heather L. Kirkorian, Koeun Choi, Tiffany A. Pempek Jan 2016

Toddlers’ Word Learning From Contingent And Non-Contingent Video On Touchscreens, Heather L. Kirkorian, Koeun Choi, Tiffany A. Pempek

Psychology Faculty Scholarship

Researchers examined whether contingent experience using a touchscreen increased toddlers’ ability to learn a word from video. One-hundred-sixteen children (24-36 mos) watched an on-screen actress label an object: (1) without interacting, (2) with instructions to touch anywhere on the screen, or (3) with instructions to touch a specific spot (location of labeled object). The youngest children learned from contingent video in the absence of reciprocal interactions with a live social partner, but only when contingent video required specific responses that emphasized important information on the screen. Conversely, this condition appeared to disrupt learning by slightly older children who were otherwise …


The Chemical Constituents Of New Essential Oils From Endemic And Sub Endemic Plants Of Mongolian Gobi, Sanduin Shatar, Jordanka Stavena, Milka Todorova, Shataryn Altantsetseg Jan 2016

The Chemical Constituents Of New Essential Oils From Endemic And Sub Endemic Plants Of Mongolian Gobi, Sanduin Shatar, Jordanka Stavena, Milka Todorova, Shataryn Altantsetseg

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The new essential oil-Endemic and sub endemic plants in Outer Mongolian Gobi were isolated by hydro distillation from the aerial parts of Brachanthemum gobicum Krasch, B. mongolicum Krach, B. mongolorum Grub., Asterothamnus centrali-asiaticus Novopork, A. molliusculus Novopork., Ajania trifida (Turcz) Tzvel, A. achilleoides (Turcz) Tzvel., Ferula ferulaeoides (Stend) Eug. Kor., Artemisia davajamczii Darijima., A. caespitosa Ldb, A. subchrysolepis Filat, A. schischkinii Krasch, A.intricata Franch, A.ordasica Krasch, A.gobica (Krasch) Grub., A. sphalerocephala Krasch that grown in wild in Outer Mongolian Gobi. The essential oils were analyzed by a combination of Capillary GC and GC-MS and their main constituents were described.


An Update Of The Family-Level Taxonomy Of Vascular Plants In Mongolia, M. Urgamal, Ch. Sanchir Jan 2016

An Update Of The Family-Level Taxonomy Of Vascular Plants In Mongolia, M. Urgamal, Ch. Sanchir

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

A new comprehensive checklist of Mongolian vascular plant families includes descriptions of all accepted plant families, each with a basionym, homonym, and full list of synonyms. The list is a completely revised update of GUBANOV’s conspectus (1996) of the Mongolian flora. The currently list covers a total of 3,113 species, subspecies and 683 genera, 112 families of vascular plants, belonging to 39 orders, 14 classes or clades and 5 divisions of the vascular plants in the flora of Mongolia.


Morphological Variation Of Mesobuthus Eupeus Mongolicus (Birula, 1911) (Scorpiones: Buthidae) In Mongolia, Mike Heddergott, D. Pohl, Michael Stubbe, Annegret Stubbe, P. Steinbach Jan 2016

Morphological Variation Of Mesobuthus Eupeus Mongolicus (Birula, 1911) (Scorpiones: Buthidae) In Mongolia, Mike Heddergott, D. Pohl, Michael Stubbe, Annegret Stubbe, P. Steinbach

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

In the present study, we investigated morphological variation of Mesobuthus eupeus mongolicus (Birula, 1911) in Mongolia. Samples were collected in 16 sites located in the provinces Bayankhongor, Khovd, Dundgovi, Dornogovi, Govisümber and Ömnögovi. Statistical analyses (Kruska-Wallis one-way ANOVA, PCA and hierarchical cluster analysis) showed that (a) morphologically the M. e. mongolicus males sampled in Dundgovi, Dornogovi, Govisümber and Ömnögovi were similar to each other, while the populations of Bayankhongor and Khovd were differentiated, and (b) the females from Bayankhongor, Dundgovi, Dornogovi, Govisümber and Ömnögovi had a similar morphology, while the population from Khovd was differentiated.


Geographical Distribution Of The Genus Mesobuthus (Scorpiones: Buthidae) In Mongolia, Mike Heddergott, Michael Stubbe, W. Stubbe, P. Steinbach, Annegret Stubbe Jan 2016

Geographical Distribution Of The Genus Mesobuthus (Scorpiones: Buthidae) In Mongolia, Mike Heddergott, Michael Stubbe, W. Stubbe, P. Steinbach, Annegret Stubbe

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

In the present study, we surveyed the diversity of scorpions in six provinces of Mongolia (Bayankhongor, Khovd, Dundgovi, Dornogovi, Govisümber and Ömnögovi) between 2001 and 2012. A total of 385 individuals were collected at 17 different sites. In addition to opportunistic sampling, animals were collected after detection with ultraviolet light. Only species from the genus Mesobuthus have been reported from Mongolia thus far. It was possible to confirm the occurrence of the species Mesobuthus eupeus mongolicus and report the presence of M. martensii martensii for the first time. We could not confirm the presence of M. caucasicus przewalskii and suggest …


Offspring Survival In The Demoiselle Crane Grus Virgo In Mongolia, Ueli Rehsteiner Jan 2016

Offspring Survival In The Demoiselle Crane Grus Virgo In Mongolia, Ueli Rehsteiner

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The breeding performance of nine breeding pairs of the Demoiselle crane Grus virgo has been investigated in Takhin Tal, Mongolia, in order to get information about their breeding density as well as the survival rate of the juveniles. To this end, the nests and the offspring have been monitored from hatching up to the age of about two months in order to get information about their survival rate. All pairs settled within a distance of about 2 km to the only river in the area, resulting in a density of about 0.6 couples per km. The number of surviving juveniles …


Investigation Of Bats In The Darkhad Wetlands, Jargalsaikhan Ariunbold Jan 2016

Investigation Of Bats In The Darkhad Wetlands, Jargalsaikhan Ariunbold

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

The Darkhadyn Khotgor wetlands are located in the northern part of Mongolia and are transected by both small and large rivers such as the Shishged and the Tengis. Many small lakes are present and the large lake ‘Tsagaan nuur’ (English: White lake) is upstream of the Yenisei river. It is a land rich in biodiversity with pristine waters and an extreme continental climate. The Darkhadyn Khotgor wetlands are composed of three ecological zones, Siberian Taiga, forested steppe, and meadow valley. The area is surrounded by Ulaan Taiga strictly protected area (SPA) in the western part, Khoridol Saridag Mountains SPA in …


Erster Brutnachweis Für Den Bienenfresser (Merops Apiaster L., 1758) In Der Mongolei = First Breeding Record For The Bee-Eater (Merops Apiaster L., 1758) In Mongolia, Michael Stubbe, Davaa Lkhagvasuren, L. Kratzsch, H.-J. Döhle, Annegret Stubbe Jan 2016

Erster Brutnachweis Für Den Bienenfresser (Merops Apiaster L., 1758) In Der Mongolei = First Breeding Record For The Bee-Eater (Merops Apiaster L., 1758) In Mongolia, Michael Stubbe, Davaa Lkhagvasuren, L. Kratzsch, H.-J. Döhle, Annegret Stubbe

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

First breeding record of Merops apiaster was observed for Mongolia in August 2014. Breeding locality was a little oasis eastern of Šarga-Sum in the Šargyn-gobi, Aimak Gobi-Altai, about 600 km eastern, far from the known area of the species in northwest China.


New Data On Feeding Ecology Of Bubo Bubo And Asio Otus (Aves: Strigidae) In Mongolia, Michael Stubbe, Nayamsuren Batsaikhan, Oliver Lindecke, Ravčigijn Samjaa, Annegret Stubbe Jan 2016

New Data On Feeding Ecology Of Bubo Bubo And Asio Otus (Aves: Strigidae) In Mongolia, Michael Stubbe, Nayamsuren Batsaikhan, Oliver Lindecke, Ravčigijn Samjaa, Annegret Stubbe

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

New materials of 10 Eagle owl Bubo bubo localities from Mongolia were analyzed. The feeding ecology of Long-eared owl Asio otus was studied by the investigation of pellets from 4 roosting or nesting places in S-Mongolia. All together in the prey of Bubo bubo were analyzed 1098 vertebrates (1017 mammals, 39 birds, 41 reptiles, 1 fish), involving about 22 mammal species. The pellets were dominantly those of Lagomorpha with 23.3% in SW-Mongolia, Dipodidae in W-, SW- and S-Mongolia (37.3%, 23.4%, 30.2%), Cricetidae in SW- and S-Mongolia (13.6%, 17.6%), Gerbillidae in W- and S-Mongolia (19%, 32.1%) and Arvicolidae in W- and …


A Revised Checklist Of Mongolian Mammal Species, V. S. Lebedev, A. A. Bannikova, Ya. Adiya, S. Shar, A. V. Surov Jan 2016

A Revised Checklist Of Mongolian Mammal Species, V. S. Lebedev, A. A. Bannikova, Ya. Adiya, S. Shar, A. V. Surov

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

A revised annotated checklist of Mongolian mammals is presented, supplemented with comments on modifications in species- and genus-level taxonomy introduced over the last 30 years. The checklist includes 140 species compared to 124 species recognized three decades ago by SOKOLOV & ORLOV (1980). Since then, four species were newly described; seven species were registered for the first time on Mongolian territory. Names for more than 20 taxa have changed, on most occasions this change occurred not for purely nomenclatural reasons but rather as a result of taxonomic revisions at the species level which have elevated the rank of many nominal …


Historische Und Aktuelle Daten Zum Wolf In Der Mongolei, D. Eregdenedagva, Ravčigijn Samjaa, Michael Stubbe, Annegret Stubbe Jan 2016

Historische Und Aktuelle Daten Zum Wolf In Der Mongolei, D. Eregdenedagva, Ravčigijn Samjaa, Michael Stubbe, Annegret Stubbe

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Zusammenfassung Die Mongolei beherbergt trotz intensiver Verfolgung einen der besten Wolfsbestände Eurasiens. Der Wolf kommt als wertvoller Großsäuger in allen Vegetationszonen der Mongolei vor. Bereits zahlreiche Steinzeichnungen künden von Mensch-, Haus- und Wildtierkonflikten mit dem wehrhaften Beutegreifer Wolf. Er ist und bleibt ein Konkurrent des Nomaden und andererseits ein wertvoller Pelzlieferant und Regulator in den Nahrungsnetzen. Die geringe menschliche Besiedlung und die in freier Weidewirtschaft gehaltenen Haustiere sowie eine reiche Fauna an kleinen und großen Wildsäugetieren bereiten der Wolfspopulation optimale nahrungsökologische Bedingungen. Seit geraumer Zeit hat die Haustierhaltung die 50 Millionengrenze überschritten. Der ökonomische Schaden des Wolfes in der Viehwirtschaft …


The Domain Specificity Of Intertemporal Choice In Pinyon Jays, Jeffrey R. Stevens, Bryce Kennedy, Dina Morales, Marianna Burks Jan 2016

The Domain Specificity Of Intertemporal Choice In Pinyon Jays, Jeffrey R. Stevens, Bryce Kennedy, Dina Morales, Marianna Burks

Jeffrey Stevens Publications

When choosing between a piece of cake now versus a slimmer waistline in the future, many of us have difficulty with self-control. Food-caching species, however, regularly hide food for later recovery, sometimes waiting months before retrieving their caches. It remains unclear whether these long-term choices generalize outside of the caching domain. We hypothesized that the ability to save for the future is a general tendency that cuts across different situations. To test this hypothesis, we measured and experimentally manipulated caching to evaluate its relationship with operant measures of self-control in pinyon jays (Gymnorhinus cyanocephalus). We found no correlation …


Species Identification Of Golden And Bald Eagle Talons Using Morphometrics, Avery J. Appleton, R. Christopher O'Brien, Pepper W. Trail Jan 2016

Species Identification Of Golden And Bald Eagle Talons Using Morphometrics, Avery J. Appleton, R. Christopher O'Brien, Pepper W. Trail

Forensic Science Publications

The Golden Eagle (Aquila chrysaetos) and Bald Eagle (Haliaeetus leucocephalus) are the largest avian predators in North America, and are thus species of great ecological importance and cultural significance. There is a long history of human use of eagle body parts, and this use continues today: Bald and Golden eagles are among the North American birds most affected by the illegal wildlife trade. Detached eagle talons are often recovered in both law enforcement and archaeological contexts, but data to allow morphological identification of these talons have been lacking. This study documents measureable differences in the morphology of Bald Eagle and …