A Non-Selective Serotonin Antagonist Promotes Rapid Habituation In The Terrestrial Hermit Crab,
2019
University of Mary Washington
A Non-Selective Serotonin Antagonist Promotes Rapid Habituation In The Terrestrial Hermit Crab, Kirandeep Sumra, W. David Stahlman
Psychological Science Articles
Research has indicated that serotonin (5-HT) modulates non-associative learning in a variety of invertebrate species. Recent work has demonstrated that the terrestrial hermit crab is a suitable animal model for non-associative learning phenomena, including habituation, sensitization, and dishabituation. We examined the potential role of a non-selective 5-HT antagonist, methysergide, in non-associative learning in the hermit crab. We administered methysergide prior to delivering repeated stimulus presentations of a looming visual predator. We found evidence for more rapid habituation relative to a control condition in which crabs did not receive the drug. These results indicate a role for 5-HT in the defensive …
Capsaicin As A Tool For Repelling Southern Flying Squirrels From Red-Cockaded Woodpecker Cavities,
2019
Tall Timbers Research Station and Land Conservancy
Capsaicin As A Tool For Repelling Southern Flying Squirrels From Red-Cockaded Woodpecker Cavities, Robert T. Meyer, James A. Cox
Human–Wildlife Interactions
The southern flying squirrel (Glaucomys volans) is an important kleptoparasite of cavities excavated by the imperiled red-cockaded woodpecker (Dryobates borealis). Flying squirrel usurpation of cavities may affect woodpecker productivity, but current efforts to manage flying squirrels are costly and time consuming. We assessed whether capsaicin could deter flying squirrel use of woodpecker cavities on a site in southwest Georgia, USA. Twenty-nine cavity tree clusters received 4 treatments: capsaicin, water, air, and a control (no treatment). Only capsaicin both removed more flying squirrels from the cavity immediately after its application and decreased the probability of a flying …
Carnivore-Livestock Conflicts In Chile: Evidence And Methods For Mitigation,
2019
Virginia Tech
Carnivore-Livestock Conflicts In Chile: Evidence And Methods For Mitigation, Valeska Rodriguez, Daniela A. Poo-Muñoz, Luis E. Escobar, Francisca Astorga, Gonzalo Medina-Vogel
Human–Wildlife Interactions
Human population growth and habitat loss have exacerbated human–wildlife conflicts worldwide. We explored trends in human–wildlife conflicts (HWCs) in Chile using scientific and official reports to identify areas and species with higher risk of conflicts and tools available for their prevention and mitigation. The puma (Puma concolor) was considered the most frequent predator; however, fox (Lycalopex spp.) and free-ranging or feral dog (Canis lupus familiaris) attacks were also common. Our results suggest that the magnitude of puma conflicts may be overestimated. Domestic sheep (Ovis spp.) and poultry (Galliformes) were the most common species predated. …
Effects Of A Voluntourism Experience On Perceptions And Attitudes Toward Environmental Sustainability And Science,
2019
Central Washington University
Effects Of A Voluntourism Experience On Perceptions And Attitudes Toward Environmental Sustainability And Science, Mireille Gonzalez
All Master's Theses
The current study explored the impact of a volunteer tourism experience at a community-based conservation (CBC) organization on volunteer perceptions, attitudes, and values toward conservation, the environment, and science. The Madagascar Research and Conservation Institute (MRCI) is a CBC organization that utilizes volunteers as a data collection resource and workforce for conservation and community outreach initiatives. The current study analyzed data from volunteer experience evaluations (VEE), which included pre- and post-experience self-report surveys comprised of qualitative and quantitative response sections, completed by 45 voluntourists over a three-month span. The quantitative findings indicate that the voluntourist experience improved participants’ self-reported attitudes …
How Researchers Address Ethical Concerns Regarding Habituating Nonhuman Primates: Results Of A Survey And Suggestions For Future Practice,
2019
Central Washington University
How Researchers Address Ethical Concerns Regarding Habituating Nonhuman Primates: Results Of A Survey And Suggestions For Future Practice, Victoria M. Green
All Master's Theses
In this study, I analyzed primatologists’ perceptions regarding the habituation of wild nonhuman primates. I distributed an online survey to primatologists and received 406 responses, 286 of which were used in data analysis. I used two sets of six-scale Likert scoring questions to determine respondents’ perceived ethical concerns and ethical duties. Exploratory factor analysis of 11 items revealed three factors regarding ethical concern, including concerns for the indirect harms of habituation (M = 5.03; SD = 0.89), unhabituated behavior after habituation is established (M = 4.98; SD = 1.08), and harms during habituation (M = 3.94; SD …
The Philosopher's Journey: A Chapter In Kindness And Animals,
2019
University of North Florida
The Philosopher's Journey: A Chapter In Kindness And Animals, Vaughn E. Sayers
UNF Undergraduate Capstone Projects and Honors Theses
We each are presented with a choice; do we remain in the cave of ignorance or embark on the philosopher’s journey. Your choice will determine the way in which you interpret this paper. However, I will confidently make the assumption that you, like myself, desire to embrace an existence guided by the light of wisdom. This thesis is one of many chapters in the philosopher’s journey, dealing with animals and (cutting through the jargon) kindness. I have found that a lot of scholarship on animal ethics acknowledges a truth, but does not acknowledge that the application of such a truth …
Ground Ingredients: Analysis Of Lead Exposure In The California Condor’S (Gymnogyps Californianus) Ground Foraging Habitat,
2019
West Virginia University
Ground Ingredients: Analysis Of Lead Exposure In The California Condor’S (Gymnogyps Californianus) Ground Foraging Habitat, Evan Michael Mcwreath
Graduate Theses, Dissertations, and Problem Reports (ETD)
The California Condor (Gymnogyps californianus) is a critically endangered species that reached its nadir in 1987 with a population of 27 birds in the wild. Intensive management efforts have been implemented to aid the condors’ recovery, however, anthropogenic factors, like use of lead ammunition, continue to cause fatalities in this vulnerable population. Lead toxicosis, which is responsible for approximately 40% of all condor deaths since 1992, is one of the most significant threats to condors. In birds lead poisoning leads to neurological dysfunction, reproductive impairment, immune suppression, gastrointestinal disturbance, anemia, and ultimately increased vulnerability to predation, starvation, and infection. For …
On The Brink Of Extinction: The Fate Of The Pacific Northwest's Southern Resident Killer Whales,
2019
Claremont Colleges
On The Brink Of Extinction: The Fate Of The Pacific Northwest's Southern Resident Killer Whales, Sabrina Wilk
Pomona Senior Theses
The killer whales that roam the northeastern Pacific Ocean have been the objects of studies since the 1970s, making them the most well-studied population of orcas in the world. Three distinct ecotypes of killer whales (Orcinus orca), known as residents, transients, and offshores, share these waters. The ecotypes are morphologically and behaviorally distinct to the extent that some scientists consider them separate species, with residents eating salmon, transients specializing on marine mammals, and offshores preferring Pacific sleeper sharks and Pacific halibut. Resident populations have endeared themselves to the region's locals with their striking black and white markings and …
Wildlife Damage To Crops Adjacent To A Protected Area In Southeastern Mexico: Farmers’ Perceptions Versus Actual Impact,
2019
Universidad Juárez Autónoma de Tabasco
Wildlife Damage To Crops Adjacent To A Protected Area In Southeastern Mexico: Farmers’ Perceptions Versus Actual Impact, Gabriel Can-Hernández, Claudia Villanueva-García, Elías José Gordillo-Chávez, Coral Jazvel Pacheco-Figueroa, Elizabeth Pérez-Netzahual, Rodrigo García-Morales
Human–Wildlife Interactions
Human–wildlife conflicts occur when wildlife has an adverse effect on human activities (e.g., predation of livestock, crop raiding). These conflicts are increasing, particularly in areas surrounding natural protected areas, where villagers engage in subsistence agriculture. Crop damage may cause farmers to retaliate and harm wildlife species considered responsible for the damage. Among the factors that determine the intensity of the conflict are the frequency of the damage and the amount of biomass consumed relative to the perceptions, values, and cultural history of the farmers affected. To better understand the conflicts between farmers and wildlife, we compared farmer perceptions of wildlife …
A Multi-Scale Analysis Of Jaguar (Panthera Onca) And Puma (Puma Concolor) Habitat Selection And Conservation In The Narrowest Section Of Panama.,
2019
Antioch University of New England
A Multi-Scale Analysis Of Jaguar (Panthera Onca) And Puma (Puma Concolor) Habitat Selection And Conservation In The Narrowest Section Of Panama., Kimberly A. Craighead
Antioch University Dissertations & Theses
Over the past two centuries, large terrestrial carnivores have suffered extreme population declines and range contractions resulting from the synergistic anthropogenic threats of land-use change and indirect effects of climate change. In Panama, rapid land use conversion coupled with climate change is predicted to negatively impact jaguar (Panthera onca) and puma (Puma concolor). This dissertation examined the environmental variables and scales influencing jaguar and puma habitat selection by season (annual, wet, and dry), using multi-scale optimized habitat suitability models and a machine-learning algorithm (Random Forests), in the narrowest section of Panama. The models derived from the data of an intensive …
Measuring Glutamate And Oxygen In Brain Reward Circuits In Animal Models Of Cocaine Abuse And Decision-Making,
2019
University of Kentucky
Measuring Glutamate And Oxygen In Brain Reward Circuits In Animal Models Of Cocaine Abuse And Decision-Making, Seth Richard Batten
Theses and Dissertations--Psychology
Drug-specific reward and associated effects on neural signaling are often studied between subjects, where one group self-administers drug and a separate group self-administers a natural reinforcer. However, exposure to drugs of abuse can cause long-term neural adaptations that can affect how an organism responds to drug reward, natural reward, and their reward-associated stimuli. Thus, to isolate drug-specific effects it is important to use models that expose the same organism to all of the aforementioned. Multiple schedules provide a means of dissociating the rewarding effects of a drug from the rewarding effects of food within a single animal. Further, drug users …
Psychologists' Use Of Dogs In Psychotherapy: A Therapeutic Exploration,
2019
Antioch University Seattle
Psychologists' Use Of Dogs In Psychotherapy: A Therapeutic Exploration, Christine A. Treece
Antioch University Dissertations & Theses
The current fund of literature documents the many benefits of using dogs as adjunct healing agents for both physical and psychological ailments. Despite the ever-growing body of research about dogs as adjunct interventions, there is a meager amount of information available about clinician’s experience of bringing their dogs to work with them. This dissertation is an in-depth exploration of six psychologists licensed in the state of Washington who brought their dogs with them to work. Each participant’s interview was analyzed using Interpretative Phenomenological Analysis. From their interviews, nine primary themes were identified: Reason for the Acquisition of Dog, Nature of …
Probability Discounting Of Lewis And Fischer 344 Rats: Strain Comparisons At Baseline And Following Acute Administration Of D-Amphetamine,
2019
West Virginia University
Probability Discounting Of Lewis And Fischer 344 Rats: Strain Comparisons At Baseline And Following Acute Administration Of D-Amphetamine, Jenny E. Ozga
Graduate Theses, Dissertations, and Problem Reports (ETD)
Risky choice can be defined as choice for a larger, uncertain reinforcer over a smaller, certain reinforcer when choosing the smaller alternative maximizes reinforcement. Risky choice is studied using various procedures in the animal laboratory; one such procedure is called probability discounting. There are many variables that contribute to risky decision-making, including biological and pharmacological determinants. The present study assessed both of these variables by evaluating dose-response effects of d-amphetamine on risky choice of Lewis (LEW) and Fischer 344 (F344) rats. The probability-discounting procedure included discrete-trials choices between one food pellet delivered 100% of the time and three food …
Our Disparaging View Of Sheep Is Indeed Based On Cognitive Inadequacy: Unfortunately, It’S Ours,
2019
University of Guelph, Canada
Our Disparaging View Of Sheep Is Indeed Based On Cognitive Inadequacy: Unfortunately, It’S Ours, Hank Davis
Animal Sentience
Additional data, such as those surveyed by Marino & Merskin, are unlikely to change our perception of sheep. Arguably, the problem lies deeper than insufficient information. There are indeed cognitive deficits at the core of the problem, but they reside in Homo sapiens, not sheep. Judgmental biases that originated in the Pleistocene age have been over-extended in the modern world and result in unreasoning discriminative practices including speciesism. “Ism’s” run deep and the more an “other” looks and acts like us, the more respect we give it. Sheep do not prosper as “individual sentient beings” under such a heuristic.
A Behaviorist Approach To Sheep Cognition, Intelligence, And Welfare,
2019
Monmouth University
A Behaviorist Approach To Sheep Cognition, Intelligence, And Welfare, Lindsay R. Mehrkam
Animal Sentience
Marino & Merskin’s review sheds light on the complexity of the mind, learning, and cognition of sheep. Readily observable behavior has value in its own right for promoting the well-being of animals. A behavior-analytic approach can add substantially to the understanding of sheep as individuals as well as their learning capacities. The findings can also be applied to arranging their environments to promote their well-being as well as behavioral change in those responsible for their care and management.
Social Cognition In Sheep: Welfare Implications,
2019
University of Electronic Science and Technology of China
Social Cognition In Sheep: Welfare Implications, Keith M. Kendrick
Animal Sentience
More research has been carried out on social cognition in sheep than in other farm animal species. Although this has often been featured widely in the media, there is still limited public awareness of it. Marino & Merskin’s review is therefore both important and timely. In my commentary, I focus primarily on what has been established about the complexity of sheep social cognition, at the level of both brain and behavior, and on some of these findings for sheep welfare.
Sheep Are Sentient, But Not Identical,
2019
University College Dublin
Sheep Are Sentient, But Not Identical, Alison Hanlon
Animal Sentience
Marino & Merskin (M&M) provide a timely reminder that sheep have advanced cognitive abilities, but do we still have to provide evidence to justify animal sentience? In the EU, regulations are designed to support farm animal welfare. Whilst the regulations are imperfect, they do emphasize behavioural needs and other concepts relevant to sentience. The persistence of sheep welfare issues such as lamb mortality indicates that regulations may not be achieving their desired goal. We can quibble about the science described by M&M yet reach the same conclusion: sheep (lambs, ewes and rams) are not all identical, but they are all …
Why Factual Appeals About The Abilities Of Sheep May Fail,
2019
Anglia Ruskin University
Why Factual Appeals About The Abilities Of Sheep May Fail, Sarah Gradidge, Magdalena Zawisza
Animal Sentience
Marino & Merskin (2019) express hope that providing people with positive information about the abilities of sheep (factual appeals) will improve perceptions of them and thus improve their welfare. However, these factual appeals can, and do, fail to change perceptions of animals. This commentary considers why and when factual appeals fail, and with whom they may be effective.
Reconciling Just Preservation,
2019
University of Calgary
Reconciling Just Preservation, Shelley M. Alexander
Animal Sentience
Treves et al.’s target article can play an important role in reconciling the needs of future generations and non-human animals in conservation. Human capacities are adequate for interpreting and defining many non-human animal needs. Worldviews are more complex, however, and conservation science, like the target article itself, suffers from a lack of diversity and inclusiveness. This may pose practical impediments to realizing just preservation.
The Intrinsic Value Of Nature,
2019
University of Colorado, Boulder
The Intrinsic Value Of Nature, Joanna E. Lambert
Animal Sentience
Treves et al. explain the need to preserve the rights of nonhuman species, human youth, and future generations. Although conservation biology has claimed to have an intrinsic valuation ethic since its inception in the 1980s, many aspects of the field have taken a decidedly anthropocentric and instrumentalist trajectory. This has important consequences for conservation-related policy and practice at all scales: local, regional, and global.
