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Articles 661 - 690 of 2030

Full-Text Articles in Other Animal Sciences

Substrate-Borne Communication In Chameleons: Do Vibrations Induce Behavioral Changes?, Emily J. Hamilton Sep 2017

Substrate-Borne Communication In Chameleons: Do Vibrations Induce Behavioral Changes?, Emily J. Hamilton

Mahurin Honors College Capstone Experience/Thesis Projects

Understanding the modes of communication used by a species is essential to understanding their ecology, behavior, and evolution. Substrate-borne vibrations have been reported to be produced by the veiled chameleon (Chamaeleo calyptratus), possibly implemented by use of a gular pouch. We found that veiled chameleons produced vibrations under dominance and mating behavioral contexts. We tested the sensitivity of veiled chameleons to vibrations by placing chameleons, one at a time, on a wooden dowel attached to a permanent magnetic shaker and recording each chameleon’s behavior before, during, and after a three-pulse vibrational stimulus of 25, 50, 150, 300, or 600 Hz. …


Can Squirrel Monkeys Learn An Abna Grammar? A Re-Evaluation Of Ravignani Et Al. (2013), Stefano Ghirlanda Sep 2017

Can Squirrel Monkeys Learn An Abna Grammar? A Re-Evaluation Of Ravignani Et Al. (2013), Stefano Ghirlanda

Publications and Research

Ravignani et al. (2013) habituated squirrel monkeys to sound sequences conforming to an ABnA grammar (nD1;2;3), then tested them for their reactions to novel gram- matical and non-grammatical sequences. Although they conclude that the monkeys ``consistently recognized and generalized the sequence ABnA,'' I remark that this conclusion is not robust. The statistical significance of results depends on specific choices of data analysis, namely dichotomization of the response variable and omission of specific data points. Additionally, there is little evidence of generalization to novel patterns (n D 4;5), which is important to conclude that the monkeys recognized the ABnA grammar beyond …


European Starlings, H. Jeffrey Homan, Ron J. Johnson, James R. Thiele, George M. Linz Sep 2017

European Starlings, H. Jeffrey Homan, Ron J. Johnson, James R. Thiele, George M. Linz

Wildlife Damage Management Technical Series

European starlings (Sturnus vulgaris, Figure 1) are an invasive species in the United States. The first recorded release of the birds was in 1890 in New York City’s Central Park. Because starlings easily adapt to a variety of habitats, nest sites and food sources, the birds spread quickly across the country. Today, there are about 150 million starlings in North America. Conflicts between people and starlings occur mostly in agricultural settings. Conflicts can occur during winter in urban and suburban environments, especially in business districts.

Starlings damage apples, blueberries, cherries, figs, grapes, peaches, and strawberries. Besides causing direct losses from …


A Study On The Biodiversity Of Ladybird Beetles In Soybean Agroecosystems Of Northwestern Ohio, Mohammed Albaaj Aug 2017

A Study On The Biodiversity Of Ladybird Beetles In Soybean Agroecosystems Of Northwestern Ohio, Mohammed Albaaj

Honors Projects

Lady or Ladybird beetles (Coleoptera: Coccinellidae) represent a large and diverse group of beetles found worldwide. Approximately six thousand (6,000) ladybird species are known globally (reference). In eastern North America, there are 60 genera containing approximately 480 species (Evans, 2014). Most species are predatory, feeding on life stages of other insects, such as aphids, caterpillars, and insect eggs, as well as plant-feeding mites, and thus provide an essential ecosystem service for humans in terms of pest control (Obrycki and Kring, 1998). Thus, this group of beetles is important for the reduction of arthropod pest populations on a variety of fruit, …


Impact Of Stress, Fear And Anxiety On The Nociceptive Responses Of Larval Zebrafish, Javier Lopez-Luna, Qussay Al-Jubouri, Lynne U. Sneddon Aug 2017

Impact Of Stress, Fear And Anxiety On The Nociceptive Responses Of Larval Zebrafish, Javier Lopez-Luna, Qussay Al-Jubouri, Lynne U. Sneddon

Sentience Collection

Both adult and larval zebrafish have been demonstrated to show behavioural responses to noxious stimulation but also to potentially stress- and fear or anxiety- eliciting situations. The pain or nociceptive response can be altered and modulated by these situations in adult fish through a mechanism called stress-induced analgesia. However, this phenomenon has not been described in larval fish yet. Therefore, this study explores the behavioural changes in larval zebrafish after noxious stimulation and exposure to challenges that can trigger a stress, fear or anxiety reaction. Five-day post fertilization zebrafish were exposed to either a stressor (air emersion), a predatory fear …


Across The Indian Ocean: A Remarkable Example Of Trans-Oceanic Dispersal In An Austral Mygalomorph Spider, Sophie E. Harrison, Mark S. Harvey, Steve J.B. Cooper, Andrew D. Austin, Michael G. Rix Aug 2017

Across The Indian Ocean: A Remarkable Example Of Trans-Oceanic Dispersal In An Austral Mygalomorph Spider, Sophie E. Harrison, Mark S. Harvey, Steve J.B. Cooper, Andrew D. Austin, Michael G. Rix

Research outputs 2014 to 2021

The Migidae are a family of austral trapdoor spiders known to show a highly restricted and disjunct distribution pattern. Here, we aim to investigate the phylogeny and historical biogeography of the group, which was previously thought to be vicariant in origin, and examine the biogeographic origins of the genus Moggridgea using a dated multi-gene phylogeny. Moggridgea specimens were sampled from southern Australia and Africa, and Bertmainus was sampled from Western Australia. Sanger sequencing methods were used to generate a robust six marker molecular dataset consisting of the nuclear genes 18S rRNA, 28S rRNA, ITS rRNA, XPNPEP3 and H3 and the …


People -- Marine Mammal Interactions, Andrew Butterworth, Mark P. Simmonds Aug 2017

People -- Marine Mammal Interactions, Andrew Butterworth, Mark P. Simmonds


Our relationships with marine mammals are complex. We have used them as resources, and in some places this remains the case; viewed them as competitors and culled them (again ongoing in some localities); been so captivated and intrigued by them that we have taken them into captivity for our entertainment; and developed a lucrative eco-tourism activity focused on them in many nations. When we first envisaged this special topic, we had two overarching aims:

Firstly, we hoped to generate critical evaluation of some of our relationships with these animals.

Secondly, we hoped to attract knowledgeable commentators and experts who might …


Cephalopod Complex Cognition, Jennifer Mather Aug 2017

Cephalopod Complex Cognition, Jennifer Mather

Cognitive Ethology Collection

Cephalopods, especially octopuses, offer a different model for the development of complex cognitive operations. They are phylogenetically distant from the mammals and birds that we normally think of as ‘intelligent’ and without the pervasive social interactions and long lives that we associate with this capacity. Additionally, they have a distributed nervous system — central brain, peripheral coordination of arm actions and a completely separate skin appearance system based on muscle-controlled chromatophores. Recent research has begun to show how these apparently separate systems are coordinated. Learning and cognition are used toward prey, in antipredator actions and in courtship. These examples show …


Herons And Egrets, Michael D. Hoy Aug 2017

Herons And Egrets, Michael D. Hoy

Wildlife Damage Management Technical Series

Human-Wildlife Conflicts

Landscapes -- Herons and egrets commonly cause damage at aquaculture facilities and recreational fishing waters where fish are held at high densities. In one study, on average wading birds consumed from 4 to 24 golden shiners per day at minnow production facilities in Arkansas. Great blue herons and great egrets commonly feed at catfish production facilities in Mississippi. The tendency for herons and egrets to congregate in large feeding flocks often leads to extensive loss of fish at aquaculture facilities. Fish-eating birds also can have an impact on intensively managed sport fisheries. Damage occurs when herons and egrets …


A Comparative Analysis Of The Nutrient Composition And Digestibility Of California Perennial And Annual Grasses At Four Stages Of Growth, Elaina Cromer Jul 2017

A Comparative Analysis Of The Nutrient Composition And Digestibility Of California Perennial And Annual Grasses At Four Stages Of Growth, Elaina Cromer

Master's Theses

Beef products represent the fourth largest agricultural commodity in the state of California, valuing more than $3 billion from 2013 to 2015 (CDFA, 2016) and procure 90% of the income for the range livestock industry (FRAP, 2003). Forages found on California’s coastal, desert, foothill, and mountain ranges are the basis of the state’s beef cattle industry. Understanding their nutritional quality of these forages is important for their effective use (George et al., 2001a; Waterman et al., 2014). The objectives of this research were to investigate the nutritional characteristics, and in situ digestbilities in Angus beef cattle, of common California annual …


African Penguins Follow The Gaze Direction Of Conspecifics, Christian Nawroth, Egle Trincas, Livio Favaro Jun 2017

African Penguins Follow The Gaze Direction Of Conspecifics, Christian Nawroth, Egle Trincas, Livio Favaro

Social Cognition Collection

Gaze following is widespread among animals. However, the corresponding ultimate functions may vary substantially. Thus, it is important to study previously understudied (or less studied) species to develop a better understanding of the ecological contexts that foster certain cognitive traits. Penguins (Family Spheniscidae), despite their wide interspecies ecological variation, have previously not been considered for cross-species comparisons. Penguin behaviour and communication have been investigated over the last decades, but less is known on how groups are structured, social hierarchies are established, and coordination for hunting and predator avoidance may occur. In this article, we investigated how African penguins (Spheniscus demersus) …


Stress Profile Influences Learning Approach In A Marine Fish, Vincent Raoult, Larissa Trompf, Jane E. Williamson, Culum Brown Jun 2017

Stress Profile Influences Learning Approach In A Marine Fish, Vincent Raoult, Larissa Trompf, Jane E. Williamson, Culum Brown

Personality Collection

The spatial learning skills of high and low stress juvenile mulloway (Argyrosomus japonicus) were tested in a dichotomous choice apparatus. Groups of fish were formed based on background blood cortisol levels and required to learn the location of a food reward hidden in one of two compartments. Low stress fish characterised by low background levels of the stress hormone cortisol had higher activity levels and entered both rewarded and unrewarded rooms frequently. Within the first week of exposure, however, their preference for the rewarded room increased, indicative of learning. Fish that had high background levels of cortisol, in …


Exploring The Impact Of Olfaction On Short-Term And Long-Term Maternal Recognition In Peromyscus Californicus, Mariah F. Conley Jun 2017

Exploring The Impact Of Olfaction On Short-Term And Long-Term Maternal Recognition In Peromyscus Californicus, Mariah F. Conley

Honors Projects

Previous studies have established a connection between social behavior and olfaction, in that as anosmia causes a decrease in perception of social cues, social behavior itself decreases. Studies investigating maternal behavior specifically have focused on foster care, in which the behaviors formed during parturition are conserved and displayed with unrelated pups. The combination of long-term retention of maternal behavior, maternal recognition, and olfaction has yet to be explored. In this study, I induced anosmia in Peromyscus californicus, a monogamous, biparental species, and analyzed their behavior with their own pups and with foreign pups in the days after birth, as well …


Sheep Worms – Breeding Worm Resistant Sheep, Department Of Primary Industries And Regional Development, Western Australia Jun 2017

Sheep Worms – Breeding Worm Resistant Sheep, Department Of Primary Industries And Regional Development, Western Australia

Animal production and livestock factsheets

Lost productivity due to drench resistance in sheep worms has been recognised as a widespread problem in Western Australia (WA) since the 1980s. The first member of the macrocyclic lactone (ML) group, ivermectin, was released in Australia in 1988 and by 1993 the first case of resistance to this group was discovered. It is now thought that more than 85% of WA sheep farms are likely to have ML resistant sheep worms. In other parts of Australia, resistance to barber's pole worms is especially severe and involves all drench groups except the newly-released drench, monepantel (Zolvix).


Investigation Into The Mechanism Of Ion Transport In Rio Negro Characiformes, Vineza D. Reduta May 2017

Investigation Into The Mechanism Of Ion Transport In Rio Negro Characiformes, Vineza D. Reduta

Undergraduate Honors Theses

Four fish species within the Characiform Order [(Rosy tetras (Hyphessobrycon rosaceus), Serpae tetras (Hyphessobrycon eques), Emperor tetras (Nematobrycon palmeri) and Penguin tetras (Thayeria obliqua)] are native to the ion-poor, acidic waters of the Rio Negro. In this paper, we focus on Wood’s revised Na+/NH4+ exchange model to gain better insight into the mechanisms of ion transport within the Characids. We exposed each species to two experimental treatments: (i) 1mM ammonia (high external ammonia [HEA]), to test coupling of Na+ uptake and ammonia excretion, and (ii) 100μM Acetazolamide …


Functional Analysis And Treatment Of Self-Injurious Feather Plucking In A Black Vulture (Coragyps Atratus), Kristen L. Morris May 2017

Functional Analysis And Treatment Of Self-Injurious Feather Plucking In A Black Vulture (Coragyps Atratus), Kristen L. Morris

Thesis Projects

Feather plucking (FP) is a maladaptive behavior observed in captive avian species. This self-injurious behavior results in damage to and removal of feathers and skin tissue, resulting in animal welfare and financial consequences. The etiology and maintenance of FP have been hypothesized through medical and environmental processes, yet a definitive solution has not been found. The current study investigated the environmental variables maintaining the FP of a Black Vulture (Coragyps atratus), as well as evaluated a function-based treatment for this behavior. The behavior was found to be maintained by positive reinforcement in the form of contingent attention. Treatment …


Do Pinnipeds Have Personality? Coding Harbor Seal (Phoca Vitulina) And California Sea Lion (Zalophus Californianus) Behavior Across Contexts, Amber J. De Vere May 2017

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

Master's Theses

Personality has now been studied in species as diverse as chimpanzees (King & Figueredo, 1997) and cuttlefish (Carere et al., 2015), but marine mammals remain vastly underrepresented in this area. A broad range of traits have been assessed only in the bottlenose dolphin (Highfilll & Kuczaj, 2007), while consistent individual differences in a few specific behaviors have been identified in grey seals (Robinson et al., 2015; Twiss & Franklin, 2010; Twiss, Culloch & Pomeroy, 2011; Twiss, Cairns, Culloch, Richards & Pomeroy, 2012). Furthermore, the context component of definitions of personality is not often assessed, despite evidence that animals may show …


Evaluation Of Absorbezz On Swine Reproductive Health And A Comparative Study Of Two Commercially Available Swine Show Feeds, Scott G. Sutton May 2017

Evaluation Of Absorbezz On Swine Reproductive Health And A Comparative Study Of Two Commercially Available Swine Show Feeds, Scott G. Sutton

Electronic Theses and Dissertations

The efficacy of a feed supplement fed to gilts and sows was tested in study I. The supplement was stated to improve reproductive soundness, conception rates, immune health, and overall well-being of livestock. Thirty gilts were split into a control group (Base diet) and a treatment group (Absorbezz® 0.32 mL on base diet). Upon completion of the trial results indicate the treatment group significantly underperformed (

Two commercially available show pig growing rations were tested in study II to find a high quality, cost efficient product. A total of 10 pigs (5 barrows, 5 gilts), at an average weight of …


Capture Theory & State Regulation Of Animal Cruelty, Kyla Henderson May 2017

Capture Theory & State Regulation Of Animal Cruelty, Kyla Henderson

Political Science Theses and Capstones

In this thesis I theorize that regulatory capture impacts animal cruelty laws in several different ways. Capture theory is the process by which regulatory agencies eventually come to be dominated by the industries they were charged with regulating. Regulatory capture happens when a regulatory agency, formed to act in the public’s interest, eventually acts in ways that benefit the industry it is supposed to be regulating, rather than the public. Animal cruelty regulations are an important factor in the way that everyday products are produced. Capture theory affecting animal cruelty is an important look at the growing concern with animal …


Does Personality Similarity In Bottlenose Dolphin Pairs Influence Dyadic Bond Characteristics?, Kelsey R. Moreno May 2017

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

Master's Theses

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


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

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

Master's Theses

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


The Effect Of Boat Type On Bottlenose Dolphin (Tursiops Trucatus) Behavior In The Mississippi Sound, Maria Zapetis May 2017

The Effect Of Boat Type On Bottlenose Dolphin (Tursiops Trucatus) Behavior In The Mississippi Sound, Maria Zapetis

Master's Theses

Increases in oceanic shipping are a global phenomenon, and a leading cause of concern for marine animal welfare. While it may be difficult to assess the effect of boat traffic on all species in all contexts, it is vital to report anthropogenic impacts where longitudinal data is available, and doubly so where a dearth of information exists. The purpose of this study is to describe how dolphin behavior changed in the presence of boats in the Mississippi Sound between 2006 and 2012, and more specifically, to detail how different boat types impacted dolphins’ behavioral states. This study is unique in …


Efficacy Of Cognitive Enrichment For Bottlenose Dolphins (Tursiops Truncatus): Evaluation Of Planning Abilities Through The Use Of A Novel Problem Solving Task, Lisa Kay Lauderdale May 2017

Efficacy Of Cognitive Enrichment For Bottlenose Dolphins (Tursiops Truncatus): Evaluation Of Planning Abilities Through The Use Of A Novel Problem Solving Task, Lisa Kay Lauderdale

Dissertations

Environmental enrichment is a key component to improving the psychological and physiological well being of animals in human care. Enrichment can be achieved through a variety of modalities, including the addition of objects and scents, or by providing the animals with additional challenges. The effectiveness of specific enrichment should be evaluated on a case-by-case basis to determine if the desired result is achieved. Environmental enrichment devices (EED’s) can be utilized to present novel problems to animals in human care. When confronted with a novel problem, dolphins can plan their behavior to create a more efficient strategy then previously modeled.

The …


Genetic Polymorphisms Of The Glucocorticoid Receptor And Interleukin-8 Receptor Genes Are Related To Production Traits And Hair Coat Score In Crossbred Cattle, Avery Deaton May 2017

Genetic Polymorphisms Of The Glucocorticoid Receptor And Interleukin-8 Receptor Genes Are Related To Production Traits And Hair Coat Score In Crossbred Cattle, Avery Deaton

Animal Science Undergraduate Honors Theses

The objective of this thesis was to identify polymorphisms in the glucocorticoid receptor (GR) and interleukin-8 receptor (CXCR2) genes and to associate genotypes between the above mentioned polymorphisms and production traits in crossbred cattle. The hypothesis was that polymorphisms will exist for GR and CXCR2 genes and will be linked to production traits. 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 reproduction health, such as protecting the embryo from the maternal immune system during …


Transcriptomic Analysis Of Maternally Provisioned Cues For Phenotypic Plasticity In The Annual Killifish, Austrofundulus Limnaeus, Amie L. Romney, Jason E. Podrabsky Apr 2017

Transcriptomic Analysis Of Maternally Provisioned Cues For Phenotypic Plasticity In The Annual Killifish, Austrofundulus Limnaeus, Amie L. Romney, Jason E. Podrabsky

Biology Faculty Publications and Presentations

Background: Genotype and environment can interact during development to produce novel adaptive traits that support life in extreme conditions. The development of the annual killifsh Austrofundulus limnaeus is unique among vertebrates because the embryos have distinct cell movements that separate epiboly from axis formation during early development, can enter into a state of metabolic dormancy known as diapause and can survive extreme environmental conditions. The ability to enter into diapause can be maternally programmed, with young females producing embryos that do not enter into diapause. Alternately, embryos can be programmed to “escape” from diapause and develop directly by both maternal …


Reduction In Activity By Noxious Chemical Stimulation Is Ameliorated By Immersion In Analgesic Drugs In Zebrafish, Javier Lopez-Luna, Qussay Al-Jubouri, Waleed Al-Nuaimy, Lynne U. Sneddon Apr 2017

Reduction In Activity By Noxious Chemical Stimulation Is Ameliorated By Immersion In Analgesic Drugs In Zebrafish, Javier Lopez-Luna, Qussay Al-Jubouri, Waleed Al-Nuaimy, Lynne U. Sneddon

Anesthesia and Analgesia Collection

Research has recently demonstrated that larval zebrafish show similar molecular responses to nociception to those of adults. Our study explored whether unprotected larval zebrafish exhibited altered behaviour after exposure to noxious chemicals and screened a range of analgesic drugs to determine their efficacy to reduce these responses. This approach aimed to validate larval zebrafish as a reliable replacement for adults as well as providing a high-throughput means of analysing behavioural responses. Zebrafish at 5 days postfertilization were exposed to known noxious stimuli: acetic acid (0.01%, 0.1% and 0.25%) and citric acid (0.1%, 1% and 5%). The behavioural response of each …


Effects Of Transitioning From A Free Choice Tall Fescue (Lolium Arundinaceum) Hay Diet In Late Winter To A Free Choice Spring Tall Fescue Pasture Diet On Plasma Fructosamine Concentrations, Body Weight, And Body Condition Scores Of Stock Horse Mares, Paige A. Smith Apr 2017

Effects Of Transitioning From A Free Choice Tall Fescue (Lolium Arundinaceum) Hay Diet In Late Winter To A Free Choice Spring Tall Fescue Pasture Diet On Plasma Fructosamine Concentrations, Body Weight, And Body Condition Scores Of Stock Horse Mares, Paige A. Smith

Masters Theses & Specialist Projects

Approximately half of all reported laminitis cases are the result of “grass founder” (laminitis associated with long-term over consumption of lush, early spring pastures). Elevated body weights (BW), body condition scores (BCS), and blood glucose concentrations have all been associated with the onset of grass founder. Plasma fructosamine concentrations (PFC) have recently been used as an indicator of long-term (14–21 d), mean blood glucose concentrations in horses and numerous authors have reported that elevated PFC were observed in laminitic horses (Murphy et al., 1997; Keen et al., 2004; Knowles et al., 2012). This study was conducted to evaluate the long-term …


What, Where, Why: A Survey Of Felidae Populations At Enashiva Nature Refuge, Tanzania, Lucrecia Aguilar Apr 2017

What, Where, Why: A Survey Of Felidae Populations At Enashiva Nature Refuge, Tanzania, Lucrecia Aguilar

Independent Study Project (ISP) Collection

As felid populations worldwide continue to deteriorate due to human activities, understanding how felid species utilize various landscapes, along with what factors affect such use or disuse, becomes essential to the preservation of these species. While previous research has examined felid populations around the world, many species and locations remain understudied. This study surveyed felid species at Enashiva Nature Refuge (ENR) in the Serengeti-Mara ecosystem to determine (1) what felid species are present at ENR, (2) where these species generally occur, and (3) why felids reside at ENR in low or high numbers. Through the use of opportunistic camera trapping, …


Monitoring Anuran Populations In Bosque Protector Candelaria: A Multi-Year Comparison Of Frog Populations In An Ecuadorian Cloud Forest, Mindee Goodrum Apr 2017

Monitoring Anuran Populations In Bosque Protector Candelaria: A Multi-Year Comparison Of Frog Populations In An Ecuadorian Cloud Forest, Mindee Goodrum

Independent Study Project (ISP) Collection

For many years, amphibian populations around the world have been declining due to climate change, habitat loss or change, and diseases such as Ranavirus or the Chytrid fungus. However, there is still a great lack of information regarding the diversity of frogs, especially in the cloud forests of Ecuador where this study was conducted. This study was conducted in April and May of 2017 in the Ecominga Reserve of Cerro Candelaria in El Placer, Ecuador. The objective was to conduct visual-encounter surveys of several sites in the reserve and compare the results to studies that have been conducted in the …


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 …