Bat Population Status And Roost Selection Of Tri-Colored Bats In The Great Smoky Mountains National Park In The Era Of White-Nose Syndrome,
2017
University of Tennessee, Knoxville
Bat Population Status And Roost Selection Of Tri-Colored Bats In The Great Smoky Mountains National Park In The Era Of White-Nose Syndrome, Grace Marie Carpenter
Masters Theses
The ongoing spread of white-nose syndrome is causing devastating declines range-wide for certain North American bat species. Baseline population data that would help mangers monitor bat populations in the face of WNS is lacking. Likewise, knowledge of summer roosts, a limiting resource for tri-colored bats (Perimyotis subflavus), a species threatened by WNS, is lacking in the southern portion of their range. In our study, we investigated the effect that WNS has had on a population of tricolored bats in the Great Smoky Mountains National Park, TN-NC. We also characterized summer roosts for the species at the microhabitat and …
Genomic Data Reveal A Loss Of Diversity In Two Species Of Tuco-Tucos (Genus Ctenomys) Following A Volcanic Eruption,
2017
Chapman University
Genomic Data Reveal A Loss Of Diversity In Two Species Of Tuco-Tucos (Genus Ctenomys) Following A Volcanic Eruption, Jeremy L. Hsu, Jeremy Chase Crawford, Mauro N. Tammone, Uma Ramakrishnan, Eileen A. Lacey, Elizabeth A. Hadly
Biology, Chemistry, and Environmental Sciences Faculty Articles and Research
Marked reductions in population size can trigger corresponding declines in genetic variation. Understanding the precise genetic consequences of such reductions, however, is often challenging due to the absence of robust pre- and post-reduction datasets. Here, we use heterochronous genomic data from samples obtained before and immediately after the 2011 eruption of the Puyehue-Cordón Caulle volcanic complex in Patagonia to explore the genetic impacts of this event on two parapatric species of rodents, the colonial tuco-tuco (Ctenomys sociabilis) and the Patagonian tuco-tuco (C. haigi). Previous analyses using microsatellites revealed no post-eruption changes in genetic variation in C. …
The Mental Homologies Of Mammals. Towards An Understanding Of Another Mammalsworld View,
2017
Centre d'Eco-Etho Recherche et Education
The Mental Homologies Of Mammals. Towards An Understanding Of Another Mammalsworld View, Marthe Kiley-Worthington
Theory of Mind Collection
Mammals’ mental homologies include that they look after their young, suckle and protect them; they acquire information about the world by learning. They have five types of sensory receptors and a brain to analyze the information and they feel: that is they are sentient. Mental homologies have been largely ignored by behavioural scientists since Darwin because of certain historical beliefs. This however has not been the case for people who have had to do with non-human mammals who have long recognized their mental similarities to humans. As a result, behavioural science has sponsored some inappropriate research (examples are given). The …
On-Farm Welfare Assessment For Regulatory Purposes: Issues And Possible Solutions,
2017
University of Aarhus
On-Farm Welfare Assessment For Regulatory Purposes: Issues And Possible Solutions, Jan Tind Sørensen, David Fraser
David Fraser, PhD
On-farm welfare assessment has been used mainly for non-regulatory purposes such as producer education or to qualify for voluntary welfare-assurance programs. The application of on-farm assessments in regulatory programs would require four issues to be addressed: (1) selecting criteria that are widely accepted as valid by diverse citizens, (2) setting minimum legal levels, (3) achieving the high level of fairness and objectivity required for legally binding requirements, and (4) achieving the cost-efficiency needed for widespread use of the methods. Issues 1 and 2 pose a particular problem because different citizens disagree on what they understand as good animal welfare, with …
Four Types Of Activities That Affect Animals: Implications For Animal Welfare Science And Animal Ethics Philosophy,
2017
University of British Columbia
Four Types Of Activities That Affect Animals: Implications For Animal Welfare Science And Animal Ethics Philosophy, D. Fraser, A. M. Macrae
David Fraser, PhD
People affect animals through four broad types of activity: (1) people keep companion, farm, laboratory and captive wild animals, often while using them for some purpose; (2) people cause deliberate harm to animals through activities such as slaughter, pest control, hunting, and toxicology testing; (3) people cause direct but unintended harm to animals through crop production, transportation, night-time lighting, and many other human activities; and (4) people harm animals indirectly by disturbing ecological systems and the processes of nature, for example by destroying habitat, introducing foreign species, and causing pollution and climate change. Each type of activity affects vast numbers …
Goats Display Audience-Dependent Human-Directed Gazing Behaviour In A Problem-Solving Task,
2017
Queen Mary University of London
Goats Display Audience-Dependent Human-Directed Gazing Behaviour In A Problem-Solving Task, Christian Nawroth, Jemma M. Brett, Alan G. Mcelligott
Alan G. McElligott, Ph.D.
Domestication is an important factor driving changes in animal cognition and behaviour. In particular, the capacity of dogs to communicate in a referential and intentional way with humans is considered a key outcome of how domestication as a companion animal shaped the canid brain. However, the lack of comparison with other domestic animals makes general conclusions about how domestication has affected these important cognitive features difficult. We investigated human-directed behaviour in an ‘unsolvable problem’ task in a domestic, but non-companion species: goats. During the test, goats experienced a forward-facing or an away-facing person. They gazed towards the forward-facing person earlier …
Vocal Individuality And Species Divergence In The Contact Calls Of Banded Penguins,
2017
University of Turin
Vocal Individuality And Species Divergence In The Contact Calls Of Banded Penguins, Livio Favaro, Claudia Gili, Cristiano Da Rugna, Guido Gnone, Chiara Fissore, Daniel Sanchez, Alan G. Mcelligott, Marco Gamba, Daniela Pessani
Alan G. McElligott, PhD
Penguins produce contact calls to maintain social relationships and group cohesion. Such vocalisations have recently been demonstrated to encode individual identity information in the African penguin. Using a source-filter theory approach, we investigated whether acoustic cues of individuality can also be found in other Spheniscus penguins and the acoustic features of contact calls have diverged within this genus. We recorded vocalisations from two ex-situ colonies of Humboldt penguin and Magellanic penguin (sympatric and potentially interbreeding in the wild) and one ex-situ group of African penguins (allopatric although capable of interbreeding with the other two species in captivity). We measured 14 …
Evaluating The Impact Of Two Contrasting Tillage Practices On Soil Properties In Central Kentucky,
2017
Murray State University
Evaluating The Impact Of Two Contrasting Tillage Practices On Soil Properties In Central Kentucky, Emily Cook
Posters-at-the-Capitol
Farming practices such as no tillage and plowing can institute change on soil physical and chemical characteristics. In this research, the effects of long-term conventional and no-tillage systems on the selected soil properties were determined in a continuous corn system on a farm with Maury silt loam soil. These samples were taken from University of Kentucky's Research Farm (Spindletop Farm). The field used was tilled in 1969 from bluegrass sod and the first time research was conduced was in 1970. Each plot is 20 ft. by 40 ft. and for many years each plot was split with winter cover crop …
Social Effects On Vocal Ontogeny In An Ungulate, The Goat, Capra Hircus,
2017
Queen Mary University of London
Social Effects On Vocal Ontogeny In An Ungulate, The Goat, Capra Hircus, Elodie F. Briefer, Alan G. Mcelligott
Alan G. McElligott, PhD
Vocal plasticity is the ability of an individual to modify its vocalizations according to its environment. Humans benefit from an extreme form of vocal plasticity, allowing us to produce a wide range of sounds. This capacity to modify sounds has been shown in three bird orders and in a few nonhuman mammal species, all characterized by complex vocal communication systems. In other mammals, there is no evidence for a social impact on vocal development. We investigated whether contact calls were affected by social environment and kinship during early ontogeny in goats, a highly vocal and social species. To test the …
Rescued Goats At A Sanctuary Display Positive Mood After Former Neglect,
2017
Queen Mary University of London
Rescued Goats At A Sanctuary Display Positive Mood After Former Neglect, Elodie F. Briefer, Alan G. Mcelligott
Alan G. McElligott, PhD
Moods influence cognitive processes in that people in positive moods expect more positive events to occur and less negative ones (“optimistic bias”), whereas the opposite happens for people in negative moods (“pessimistic bias”). The evidence for an effect of mood on cognitive bias is also increasing in animals, suggesting that measures of optimism and pessimism could provide useful indicators of animal welfare. For obvious ethical reasons, serious poor treatments cannot be easily replicated in large mammals in order to study their long-term effects on moods. In this study, we tested the long-term effects (>2 years) of prior poor welfare …
Mutual Mother–Offspring Vocal Recognition In An Ungulate Hider Species (Capra Hircus),
2017
Queen Mary University of London
Mutual Mother–Offspring Vocal Recognition In An Ungulate Hider Species (Capra Hircus), Elodie F. Briefer, Alan G. Mcelligott
Alan G. McElligott, PhD
Parent–offspring recognition can be essential for offspring survival and important to avoid misdirected parental care when progeny mingle in large social groups. In ungulates, offspring anti-predator strategies (hiding vs. following) result in differences in mother–offspring interactions, and thus different selection pressures acting on the recognition process during the first weeks of life. Hider offspring are isolated and relatively stationary and silent to avoid detection by predators, whereas follower offspring are mobile and rapidly mix in large social groups. For these reasons, hiders have been suggested to show low offspring call individuality leading to unidirectional recognition of mothers by offspring and …
Judgement Bias In Goats (Capra Hircus): Investigating The Effects Of Human Grooming,
2017
Queen Mary University of London
Judgement Bias In Goats (Capra Hircus): Investigating The Effects Of Human Grooming, Luigi Baciadonna, Christian Nawroth, Alan G. Mcelligott
Alan G. McElligott, PhD
Animal emotional states can be investigated by evaluating their impact on cognitive processes. In this study, we used a judgement bias paradigm to determine if shortterm positive human-animal interaction (grooming) induced a positive affective state in goats. We tested two groups of goats and trained them to discriminate between a rewarded and a non-rewarded location over nine training days. During training, the experimental group (nD9) was gently groomed by brushing their heads and backs for five min over 11 days (nine training days, plus two testing days, total time 55 min). During training, the control group (nD10) did not experience …
Mother Goats Do Not Forget Their Kids’ Calls,
2017
Queen Mary University of London
Mother Goats Do Not Forget Their Kids’ Calls, Elodie F. Briefer, Mónica Padilla De La Torre, Alan G. Mcelligott
Alan G. McElligott, PhD
Parent–offspring recognition is crucial for offspring survival. At long distances, this recognition is mainly based on vocalizations. Because of maturation-related changes to the structure of vocalizations, parents have to learn successive call versions produced by their offspring throughout ontogeny in order to maintain recognition. However, because of the difficulties involved in following the same individuals over years, it is not clear how long this vocal memory persists. Here, we investigated long-term vocal recognition in goats. We tested responses of mothers to their kids’ calls 7–13 months after weaning. We then compared mothers’ responses to calls of their previous kids with …
Intrasexual Selection Drives Sensitivity To Pitch, Formants And Duration In The Competitive Calls Of Fallow Bucks,
2017
Queen Mary University of London
Intrasexual Selection Drives Sensitivity To Pitch, Formants And Duration In The Competitive Calls Of Fallow Bucks, Benjamin J. Pitcher, Elodie Briefer, Alan G. Mcelligott
Alan G. McElligott, PhD
Background: Mammal vocal parameters such as fundamental frequency (or pitch; fo) and formant dispersion often provide information about quality traits of the producer (e.g. dominance and body size), suggesting that they are sexually selected. However, little experimental evidence exists demonstrating the importance of these cues in intrasexual competition, particularly fo. Male Fallow deer (bucks) produce an extremely low pitched groan. Bucks have a descended larynx and generate fo well below what is expected for animals of their size. Groan parameters are linked to caller dominance, body size and condition, suggesting that groans are the product of sexual selection. Using a …
Indicators Of Age, Body Size And Sex In Goat Kid Calls Revealed Using The Source–Filter Theory,
2017
Queen Mary University of London
Indicators Of Age, Body Size And Sex In Goat Kid Calls Revealed Using The Source–Filter Theory, Elodie F. Briefer, Alan G. Mcelligott
Alan G. McElligott, PhD
The source–filter theory is an important framework recently applied to the study of animal vocalisations, which links the mode of vocal production to call parameters. Vocalisations can be good indicators of a sender’s characteristics, such as identity, body size, age, and even hormonal status and affective states. For these reasons, applied vocal communication research would greatly benefit from adopting the source–filter theory approach to identify key call parameters linked to physical and physiological characteristics of domestic animals. Here, we introduce the source–filter theory through a detailed analysis and interpretation of goat contact calls during development. In mammals, vocal development is …
Human Head Orientation And Eye Visibility As Indicators Of Attention For Goats (Capra Hircus),
2017
Queen Mary University of London
Human Head Orientation And Eye Visibility As Indicators Of Attention For Goats (Capra Hircus), Christian Nawroth, Alan G. Mcelligott
Alan G. McElligott, PhD
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 …
Goats Excel At Learning And Remembering A Highly Novel Cognitive Task,
2017
Queen Mary University of London
Goats Excel At Learning And Remembering A Highly Novel Cognitive Task, Elodie F. Briefer, Samaah Haque, Luigi Baciadonna, Alan G. Mcelligott
Alan G. McElligott, PhD
Introduction: The computational demands of sociality (maintaining group cohesion, reducing conflict) and ecological problems (extractive foraging, memorizing resource locations) are the main drivers proposed to explain the evolution cognition. Different predictions follow, about whether animals would preferentially learn new tasks socially or not, but the prevalent view today is that intelligent species should excel at social learning. However, the predictions were originally used to explain primate cognition, and studies of species with relatively smaller brains are rare. By contrast, domestication has often led to a decrease in brain size, which could affect cognition. In domestic animals, the relaxed selection pressures …
Mother--Offspring Recognition Via Contact Calls In Cattle, Bos Taurus,
2017
University of Nottingham
Mother--Offspring Recognition Via Contact Calls In Cattle, Bos Taurus, Mónica Padilla De La Torre, Elodie F. Briefer, Brad M. Ochocki, Alan G. Mcelligott, Tom Reader
Alan G. McElligott, PhD
Individual recognition in gregarious species is fundamental in order to avoid misdirected parental investment. In ungulates, two very different parental care strategies have been identified: ‘hider’ offspring usually lie concealed in vegetation whereas offspring of ‘follower’ species remain with their mothers while they forage. These two strategies have been suggested to impact on mother--offspring vocal recognition, with unidirectional recognition of the mother by offspring occurring in hiders and bidirectional recognition in followers. In domestic cattle, Bos taurus, a facultative hider species, vocal communication and recognition have not been studied in detail under free-ranging conditions, where cows and calves can graze …
Quality Prevails Over Identity In The Sexually Selected Vocalisations Of An Ageing Mammal,
2017
Queen Mary University of London
Quality Prevails Over Identity In The Sexually Selected Vocalisations Of An Ageing Mammal, Elodie F. Briefer, Elisabetta Vannoni, Alan G. Mcelligott
Alan G. McElligott, PhD
Background: Male sexually selected vocalisations generally contain both individuality and quality cues that are crucial in intra- as well as inter-sexual communication. As individuality is a fixed feature whereas male phenotypic quality changes with age, individuality and quality cues may be subjected to different selection pressures over time. Individuality (for example, morphology of the vocal apparatus) and quality (for example, body size and dominance status) can both affect the vocal production mechanism, inducing the same components of vocalisations to convey both kinds of information. In this case, do quality-related changes to the acoustic structure of calls induce a modification of …
Goats Learn Socially From Humans In A Spatial Problem-Solving Task,
2017
Queen Mary University of London
Goats Learn Socially From Humans In A Spatial Problem-Solving Task, Christian Nawroth, Luigi Baciadonna, Alan G. Mcelligott
Alan G. McElligott, PhD
Domestication drives changes in animal cognition and behaviour. In particular, the capacity of dogs to socially learn from humans is considered a key outcome of how domestication shaped the canid brain. However, systematic evidence for social learning from humans in other domestic species is lacking and makes general conclusions about how domestication has affected cognitive abilities difficult. We assessed spatial and social problem-solving abilities in goats (Capra hircus) using a detour task, in which food was placed behind an inward or outward V-shaped hurdle. Goats performed better in the outward than in the inward detour without human demonstration. Importantly, a …
