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Articles 961 - 990 of 3152

Full-Text Articles in Animal Studies

P24. The Birds And The Beats: Perception Of A Beat In An Avian Model, Brendon Samuels Mar 2017

P24. The Birds And The Beats: Perception Of A Beat In An Avian Model, Brendon Samuels

Western Research Forum

Background: Beat perception is a complex cognitive skill that enables humans to “feel” the beat in music, and is an essential component of synchronization of behavior and dance. The mechanisms in the human brain that facilitate beat perception are not entirely understood, and have only been studied thus far using non-invasive techniques. Some animals, such as songbirds, also seem to be able to detect a beat in rhythms, though this has never been formally tested independent of motor synchronization.

Methods: An operant experiment is used to assess if European starlings, a type of songbird, are capable of categorizing …


Human Head Orientation And Eye Visibility As Indicators Of Attention For Goats (Capra Hircus), Christian Nawroth, Alan G. Mcelligott Mar 2017

Human Head Orientation And Eye Visibility As Indicators Of Attention For Goats (Capra Hircus), Christian Nawroth, Alan G. Mcelligott

Social Cognition Collection

Animals domesticated for working closely with humans (e.g. dogs) have been shown to be remarkable in adjusting their behaviour to human attentional stance. However, there is little evidence for this form of information perception in species domesticated for production rather than companionship. We tested domestic ungulates (goats) for their ability to differentiate attentional states of humans. In the first experiment, we investigated the effect of body and head orientation of one human experimenter on approach behaviour by goats. Test subjects (N = 24) significantly changed their behaviour when the experimenter turned its back to the subjects, but did not take …


Why Men Trophy Hunt, Chris T. Darimont, Brian F. Codding, Kristen Hawkes Mar 2017

Why Men Trophy Hunt, Chris T. Darimont, Brian F. Codding, Kristen Hawkes

Big-Game and Trophy Hunting Collection

The killing of Cecil the lion (Panthera leo) ignited enduring and increasingly global discussion about trophy hunting. Yet, policy debate about its benefits and costs focuses only on the hunted species and biodiversity, not the unique behaviour of hunters. Some contemporary recreational hunters from the developed world behave curiously, commonly targeting ‘trophies’: individuals within populations with large body or ornament size, as well as rare and/or inedible species, like carnivores. Although contemporary hunters have been classified according to implied motivation (i.e. for meat, recreation, trophy or population control, as well the ‘multiple satisfactions’ they seek while hunting (affiliation, …


Thinking Chickens: A Review Of Cognition, Emotion, And Behavior In The Domestic Chicken, Lori Marino Mar 2017

Thinking Chickens: A Review Of Cognition, Emotion, And Behavior In The Domestic Chicken, Lori Marino

Intelligence Collection

Domestic chickens are members of an order, Aves, which has been the focus of a revolution in our understanding of neuroanatomical, cognitive, and social complexity. At least some birds are now known to be on par with many mammals in terms of their level of intelligence, emotional sophistication, and social interaction. Yet, views of chickens have largely remained unrevised by this new evidence. In this paper, I examine the peer-reviewed scientific data on the leading edge of cognition, emotions, personality, and sociality in chickens, exploring such areas as self-awareness, cognitive bias, social learning and self-control, and comparing their abilities in …


Marine Mammals In Asian Societies; Trends In Consumption, Bait, And Traditional Use, Lindsay Porter, Hong Yu Lai Feb 2017

Marine Mammals In Asian Societies; Trends In Consumption, Bait, And Traditional Use, Lindsay Porter, Hong Yu Lai

Anthropogenics and Population Decline Collection

In Asia many marine mammal species are consumed as food or for other purposes. The prevalence of this exploitation appears to increase from west to east. An escalating use of marine mammals and the emergence of commercialization of a trade in marine mammals is supported by:

  • Regular documentation of both open and covert trade;
  • A shift in focus in some diminishing traditional hunts to other marine mammal species;
  • A possible revival in some targeted hunts, which had previously ceased;
  • The recent implication of some cultures, which have little history of marine mammal consumption previously, in targeted hunts; and
  • The growing …


Why Do Dog Breeds With Genetic Disorders Suddenly Get Hot?, Harold Herzog Feb 2017

Why Do Dog Breeds With Genetic Disorders Suddenly Get Hot?, Harold Herzog

'Animals and Us' Blog Posts

New research explains the attraction to dog breeds that have health problems.


Oklahoma Humane Society Compassion Center Economic Impact Study, Kevin Morris, Russell Evans, Sloane Smith, Katy Loughney, Phil Tedeschi Feb 2017

Oklahoma Humane Society Compassion Center Economic Impact Study, Kevin Morris, Russell Evans, Sloane Smith, Katy Loughney, Phil Tedeschi

Humane Societies and Rescue Organizations Collection

The Central Oklahoma Humane Society (OK Humane) is looking to assess the potential economic, community, and public health impacts of building and operating an innovative animal sheltering concept called the Compassion Center in downtown Oklahoma City, Oklahoma. Using Impact Analysis for Planning (IMPLAN) software, this report quantifies the proposed center’s direct, indirect, and induced effects on the economy of Oklahoma City.

In addition to the economic impact calculated with IMPLAN, this paper also explores urban amenity complex and One Health (connectivity between people, animals and the environment) impacts, both economic and otherwise, which could result from the Compassion Center’s presence. …


Study Finds Dog-Walkers Have More Bad Mental Health Days!, Harold Herzog Feb 2017

Study Finds Dog-Walkers Have More Bad Mental Health Days!, Harold Herzog

'Animals and Us' Blog Posts

Nine recent studies reported pets did not improve human health and happiness.


Survey Of The Owned Dog Population In District Ii Of Quezon City, Philippines, Kazami Joanne Amano Feb 2017

Survey Of The Owned Dog Population In District Ii Of Quezon City, Philippines, Kazami Joanne Amano

Demography and Statistics for Companion Animal Populations Collection

Humane Society International (HSI) in cooperation with the Quezon City Veterinary Department (QCVD) conducted a dog population survey in District II of Quezon City, Philippines (figure 1). Quezon City accounts for 23.3% of Metro Manila’s total population. It is part of the National Capital Region (NCR) and is located near the center of Metro Manila (figure 2). It has a land area of 161.126 km2 (16,112.6 hectares) with a human population of 2,936,116 million (Census, 2015) with an estimated annual growth rate of 2.42%. The population density is 19,151 persons per km2.


Whip Rule Breaches In A Major Australian Racing Jurisdiction: Welfare And Regulatory Implications, Jennifer Hood, Carolyn Mcdonald, Bethany Wilson, Phil Mcmanus Jan 2017

Whip Rule Breaches In A Major Australian Racing Jurisdiction: Welfare And Regulatory Implications, Jennifer Hood, Carolyn Mcdonald, Bethany Wilson, Phil Mcmanus

Sport and Working Animal Welfare Collection

Whip use in horseracing is increasingly being questioned on ethical, animal welfare, social sustainability, and legal grounds. Despite this, there is weak evidence for whip use and its regulation by Stewards in Australia. To help address this, we characterised whip rule breaches recorded by Stewards using Stewards Reports and Race Diaries from 2013 and 2016 in New SouthWales (NSW) and the Australian Capital Territory (ACT). There were more recorded breaches at Metropolitan (M) than Country (C) or Provincial (P) locations, and by riders of horses that finished first, second, or third than by riders of horses that finished in other …


Cross-Modal Recognition Of Familiar Conspecifics In Goats, Benjamin J. Pitcher, Elodie F. Briefer, Luigi Baciadonna, Alan G. Mcelligott Jan 2017

Cross-Modal Recognition Of Familiar Conspecifics In Goats, Benjamin J. Pitcher, Elodie F. Briefer, Luigi Baciadonna, Alan G. Mcelligott

Recognition Collection

When identifying other individuals, animals may match current cues with stored information about that individual from the same sensory modality. Animals may also be able to combine current information with previously acquired information from other sensory modalities, indicating that they possess complex cognitive templates of individuals that are independent of modality. We investigated whether goats (Capra hircus) possess cross-modal representations (auditory–visual) of conspecifics. We presented subjects with recorded conspecific calls broadcast equidistant between two individuals, one of which was the caller. We found that, when presented with a stablemate and another herd member, goats looked towards the caller sooner and …


Do Vegetarians Smell Sexier?, Harold Herzog Jan 2017

Do Vegetarians Smell Sexier?, Harold Herzog

'Animals and Us' Blog Posts

New research shows the surprising effects of foods on body odor and skin color.


Noseband Use In Equestrian Sports ± An International Study, Orla Doherty, Vincent Casey, Paul Mcgreevy, Sean Arkins Jan 2017

Noseband Use In Equestrian Sports ± An International Study, Orla Doherty, Vincent Casey, Paul Mcgreevy, Sean Arkins

Sport and Working Animal Welfare Collection

Nosebands are used by riders to prevent the horse from opening its mouth, to increase control and, in some cases, to comply with the competition rules. While equestrian texts traditionally recommend that two adult human fingers should be able to fit under a fastened noseband, noseband tightness levels are not, in general, regulated in competition. Possible detrimental consequences for the horse, of excessively tight nosebands, include discomfort, pain or tissue damage. The current study investigated noseband usage in equestrian competition. Data regarding noseband type, position, width and tightness were collected from 750 horses in eventing (n = 354), dressage (n …


Distribution, Diversity, And Den Locations Of Canidae And Hyaenidae Species Across Habitat Type At Enashiva Nature Refuge, Grace Bullington Jan 2017

Distribution, Diversity, And Den Locations Of Canidae And Hyaenidae Species Across Habitat Type At Enashiva Nature Refuge, Grace Bullington

Independent Study Project (ISP) Collection

Due to the importance of top-trophic level predators have on their environment including regulating prey species and influencing ecosystem biodiversity, it is important to monitor top-trophic level predators to understand how they shape their ecosystem. While top-trophic level predators can benefit the ecosystem, they can also cause problems for surrounding human settlements like predation on livestock. Species in the Canidae and Hyaenidae families occupy the top-trophic level and can influence their ecosystem and cause human-wildlife conflict.

This study looked at the distribution, diversity, and den locations of Canidae and Hyaenidae species at Enashiva Nature Refuge over the course of 21 …


Individual Personality Differences In Goats Predict Their Performance In Visual Learning And Non-Associative Cognitive Tasks, Christian Nawroth, Pamela M. Prentice, Alan G. Mcelligott Jan 2017

Individual Personality Differences In Goats Predict Their Performance In Visual Learning And Non-Associative Cognitive Tasks, Christian Nawroth, Pamela M. Prentice, Alan G. Mcelligott

Learning Ability Collection

Variation in common personality traits, such as boldness or exploration, is often associated with risk–reward trade–offs and behavioural flexibility. To date, only a few studies have examined the effects of consistent behavioural traits on both learning and cognition. We investigated whether certain personality traits (‘exploration’ and ‘sociability’) of individuals were related to cognitive performance, learning flexibility and learning style in a social ungulate species, the goat (Capra hircus). We also investigated whether a preference for feature cues rather than impaired learning abilities can explain performance variation in a visual discrimination task. We found that personality scores were consistent …


Animals Do Not Commit Suicide But Do Display Behaviors That Are Precursors Of Suicide In Humans, David Eilam Jan 2017

Animals Do Not Commit Suicide But Do Display Behaviors That Are Precursors Of Suicide In Humans, David Eilam

Animal Sentience

Although my commentary begins with a report about a monkey committing suicide, I agree with the target article's concluding statement that we cannot currently prove that any animal has committed suicide. The author’s proposed continuist approach is based on animal behaviors reminiscent of symptoms preceding suicide in humans (e.g., deep depression and grief). However, in both humans and nonhuman animals, these are just potential precursors of suicide, and dying as a result of grief is not necessarily suicide. In the absence of supporting evidence, the continuist hypothesis of animal suicide is not sustained.


Why Do People Buy Dogs With Potential Welfare Problems Related To Extreme Conformation And Inherited Disease? A Representative Study Of Danish Owners Of Four Small Dog Breeds, Peter Sandøe, Sara V. Kondrup, Pauleen C. Bennet, Bjørn Forkman, Iben Meyer, Helle Friis Proschowsky, James A. Serpell, Thomas Bøker Lund Jan 2017

Why Do People Buy Dogs With Potential Welfare Problems Related To Extreme Conformation And Inherited Disease? A Representative Study Of Danish Owners Of Four Small Dog Breeds, Peter Sandøe, Sara V. Kondrup, Pauleen C. Bennet, Bjørn Forkman, Iben Meyer, Helle Friis Proschowsky, James A. Serpell, Thomas Bøker Lund

Animal sheltering

A sample of owners of four dog breeds – French Bulldog, Chihuahua, Cavalier King Charles Spaniel and Cairn Terrier (as a breed with average health problems) – drawn from the Danish dog registry were asked about their planning to acquire the dog and their understanding of the potential health and behavior issues associated with each.


Physiological And Behavioural Evaluation Of Common Anaesthesia Practices In The Rainbow Trout, Kieran C. Pounder, Jennifer L. Mitchell, Jack S. Thomson, Tom G. Pottinger, Lynne U. Sneddon Jan 2017

Physiological And Behavioural Evaluation Of Common Anaesthesia Practices In The Rainbow Trout, Kieran C. Pounder, Jennifer L. Mitchell, Jack S. Thomson, Tom G. Pottinger, Lynne U. Sneddon

Anesthesia and Analgesia Collection

Anaesthetic drugs are commonly administered to fish in aquaculture, research and veterinary contexts. Anaesthesia causes temporary absence of consciousness and may reduce the stress and/or pain associated with handling and certain invasive procedures. The rainbow trout (Oncorhynchus mykiss) is a widely-used model species with relevance to both aquaculture and natural ecosystems. This study sought to establish the relative acute impact of commonly used anaesthetics on rainbow trout when used for anaesthesia or euthanasia by exploring their effects on aversion behaviour and stress physiology. Five widely used anaesthetics were investigated at two concentrations reflective of common laboratory practises: MS-222, benzocaine, 2-phenoxyethanol, …


The Roles Of Individuals And Social Networking In A Small Group Of Domestic Horses At Pasture, C. Ricci-Bonot, Marthe Kiley-Worthington Jan 2017

The Roles Of Individuals And Social Networking In A Small Group Of Domestic Horses At Pasture, C. Ricci-Bonot, Marthe Kiley-Worthington

Social Behavior Collection

100 h (500 horse h) of critically assessed observations where analysed from two pastural situations on decision making and social networking in a herd of 5 arab and arab x horses of the Druimghigha Stud, behaviourally studied since 1978. Roles such as decision maker (the oldest mare) or follower (the youngest filly) and the popularity of each individual from whom they chose to be near were analysed. Social netwok analysis indicated the centrality of an individual, cohesive bonds among 3 mares and a sub group of the filly and the gelding. A network closure towards the gelding was also illustrated, …


Perception Of Emotional Valence In Horse Whinnies, Elodie Briefer, Roi Mandel, Anne-Laure Maigrot, Sabrina Briefer Freymond, Iris Bachmann, Edna Hillmann Jan 2017

Perception Of Emotional Valence In Horse Whinnies, Elodie Briefer, Roi Mandel, Anne-Laure Maigrot, Sabrina Briefer Freymond, Iris Bachmann, Edna Hillmann

Bioacoustics Collection

Background: Non-human animals often produce different types of vocalisations in negative and positive contexts (i.e. different valence), similar to humans, in which crying is associated with negative emotions and laughter is associated with positive ones. However, some types of vocalisations (e.g. contact calls, human speech) can be produced in both negative and positive contexts, and changes in valence are only accompanied by slight structural differences. Although such acoustically graded signals associated with opposite valence have been highlighted in some species, it is not known if conspecifics discriminate them, and if contagion of emotional valence occurs as a result. We tested …


Animal Ethics And Animal Consciousness, Bernard E. Rollin Jan 2017

Animal Ethics And Animal Consciousness, Bernard E. Rollin

Ethics and Animal Welfare Collection

Commentary on Marino and Allen (2017) The Psychology of Cows


Extinguishing A Learned Response In A Free-Ranging Gray Wolf (Canis Lupus), L. David Mech Jan 2017

Extinguishing A Learned Response In A Free-Ranging Gray Wolf (Canis Lupus), L. David Mech

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Learning and extinguishing learned behaviour (Thorn dike 1911; Skinner 1953) have been well studied in domestic dogs (Miklosi 2015). Some investigations of learning have been conducted with captive Gray Wolves (Canis lupus; Packard 2003; Frank 2011), including one study that included extinguishing learned behaviour (Cheney 1982). In addition, considerable research has been done comparing social learning be - tween dogs and captive wolves (Range and Viranyi 2013; Marshall-Pescini et al. 2015). However, to my knowledge, only Packard (2012) has studied learning in free-ranging wolves, and no one has investigated extinguishing a learned response in such wolves. The purpose of this …


Use Of Vertical Enclosure Space And Species-Typical Locomotion By A Rehabilitating Spider Monkey (Ateles Fusciceps), Jake Funkhouser Jan 2017

Use Of Vertical Enclosure Space And Species-Typical Locomotion By A Rehabilitating Spider Monkey (Ateles Fusciceps), Jake Funkhouser

Undergraduate Honors Theses

With wild spider monkey populations in decline, investigations contributing to captive welfare, and successful rehabilitation and reintroduction knowledge is increasingly pressing. Quantifying and analyzing the appropriateness of naturalistic enclosure designs to foster species-typical behaviors is an effective way to address both of these needs. This study investigates enclosure space use, vertical space preference, substrate use, positional/postural modes, and interactions with human caregivers of a wild-caught, pet-trade rehabilitant Columbian black spider monkey (Ateles fusciceps rufiventris, N = 1). Video data collected daily from August to October 2015 via focal animal sampling (from 08:00 to 10:00) at Alouatta Sanctuary, Panama …


Serum Cortisol Concentrations And Behavior Assessment As Tools For Evaluating Stress In Horses Used In Therapeutic Or University Riding Programs, Shikun Chen Jan 2017

Serum Cortisol Concentrations And Behavior Assessment As Tools For Evaluating Stress In Horses Used In Therapeutic Or University Riding Programs, Shikun Chen

Murray State Theses and Dissertations

Stress is known to have a negative impact on the health and well-being of animals. Physiological and behavioral changes offer objective and easy to use methods of evaluating stress in horses. However, there are limited studies showing a relationship between changes in stress-related behavior and stress-related serum cortisol concentrations in horses. This study evaluated the relationship between stress-related behavior and cortisol concentration changes in horses used in a university equine program and a therapeutic riding program. Behavior was evaluated by two trained observers during multiple riding sessions. Audio recordings were made during direct observation, and video recordings were used to …


Mobbing Behavior In Wild Steller's Jay (Cyanocitta Stelleri), Kelly Anne Commons Jan 2017

Mobbing Behavior In Wild Steller's Jay (Cyanocitta Stelleri), Kelly Anne Commons

Cal Poly Humboldt theses and projects

Mobbing is a widespread anti-predator behavior with multifaceted functions. Mobbing behavior has been found to differ with respect to many individual, group, and encounter level factors. To better understand the factors that influence mobbing behavior in wild Steller’s jays (Cyanocitta stelleri), I induced mobbing behavior using 3 predator mounts: a great horned owl (Bubo virginianus), common raven (Corvus corax), and sharp-shinned hawk (Accipiter cooperii). I observed 90 responses to mock predators by 33 color-marked individuals and found that jays varied in their attendance at mobbing trials, their alarm calling behavior, and in …


Horse Use And Management In University Equine Programs, Hui Zhao Jan 2017

Horse Use And Management In University Equine Programs, Hui Zhao

Murray State Theses and Dissertations

Horses are utilized in numerous higher education programs in United States. However, there is limited information on horse use, especially in university and college programs. Due to increasing enrollment, greater demand is placed on horse use while institutions are experiencing reduced funding and smaller herd numbers. Thus, this project was conducted to evaluate horse use and management in university and college programs. It was hypothesized that most equine programs over used their horses. A pilot study was conducted to validate the instrument used for the overall study. The survey instrument was created on SurveyMonkey® and released to equine programs (n …


Sexually Dimorphic Aggression Indicates Male Gray Wolves Specialize In Pack Defense Against Conspecific Groups, Kira A. Cassidy, L. David Mech, Daniel R. Macnulty, Daniel R. Stahler, Douglas W. Smith Jan 2017

Sexually Dimorphic Aggression Indicates Male Gray Wolves Specialize In Pack Defense Against Conspecific Groups, Kira A. Cassidy, L. David Mech, Daniel R. Macnulty, Daniel R. Stahler, Douglas W. Smith

United States Geological Survey, Northern Prairie Wildlife Research Center: Publications

Aggression directed at conspecific groups is common among gregarious, territorial species, and for some species such as gray wolves (Canis lupus) intraspecific strife is the leading cause of natural mortality. Each individual in a group likely has different measures of the costs and benefits associated with a group task, such as an aggressive attack on another group, which can alter motivation and behavior. We observed 292 inter-pack aggressive interactions in Yellowstone National Park between 1 April 1995 and 1 April 2011 (>5300 days of observation) in order to determine the role of both sexes, and the influence of pack, …


Do Pinnipeds Have Personality? Broad Dimensions And Contextual Consistency Of Behavior In Harbor Seals (Phoca Vitulina) And California Sea Lions (Zalophus Californianus), Amber J. De Vere, Malin K. Lilley, Lauren Highfill Jan 2017

Do Pinnipeds Have Personality? Broad Dimensions And Contextual Consistency Of Behavior In Harbor Seals (Phoca Vitulina) And California Sea Lions (Zalophus Californianus), Amber J. De Vere, Malin K. Lilley, Lauren Highfill

Psychology Faculty Publications (Archived)

Personality has now been studied in species as diverse as chimpanzees and cuttlefish, but marine mammals remain vastly underrepresented in this area. A broad range of traits have been assessed only once in each of bottlenose dolphins and California sea lions, while consistent individual differences in a few specific behaviors have been identified in grey seals. Furthermore, the context component of definitions of personality is not often assessed, despite evidence that animals may show individual patterns of behavioral consistency across contexts. The current study therefore aimed to use behavioral coding to assess underlying personality factors and consistency across contexts in …


An Analysis Of White-Tailed Deer, Odocoileus Virginianus, Killed In Deer Vehicle Accidents On Bulloch County, Ga Roadways, Mackenzie P. Payne 4003933 Jan 2017

An Analysis Of White-Tailed Deer, Odocoileus Virginianus, Killed In Deer Vehicle Accidents On Bulloch County, Ga Roadways, Mackenzie P. Payne 4003933

Honors College Theses

White-tailed deer, Odocoileus virginianus, are native to Georgia. With over 1.2 million individuals in the state, White-tailed deer have been implicated in a large number of motor vehicle collisions (ca. 1 million) each year. It is unknown, however, if deer are more likely to be killed: 1) if they are of particular ages (or classes), and 2) in areas with specific road characteristics. We addressed these two questions by collecting the remains of 20 White-tailed deer killed in deer vehicle collisions (“deer vehicle accidents” - DVAs) in Bulloch County, GA. When a deer was located, the road characteristics were …


Genetic Polymorphisms Of The Glucocorticoid Receptor And Interleulin-8 Receptor Genes And Their Relationship To Production Traits And Hair Coat Scores In Crossbred Cattle, Avery B. Deaton, Laura Meyer, Jeremy Powell, Charles F. Rosenkrans Jr. Jan 2017

Genetic Polymorphisms Of The Glucocorticoid Receptor And Interleulin-8 Receptor Genes And Their Relationship To Production Traits And Hair Coat Scores In Crossbred Cattle, Avery B. Deaton, Laura Meyer, Jeremy Powell, Charles F. Rosenkrans Jr.

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

Little is understood about how the diversity of genes, specifically the glucocorticoid receptor (GR) and interleukin-8 receptor (CXCR2), are related to reproductive health and how this affects physical traits in cattle. Glucocorticoid receptors have been positively associated with higher milk yields, lactose content, feed intake, and feed conversion rates. Interleukin-8 genes are part of the innate immune response and help with many aspects of female reproductive health, such as protecting the embryo from the maternal immune system during pregnancy. The objective of this research was to identify polymorphisms in the GR and CXCR2 genes and to associate genotypes between the …