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Additional County Records Of Invertebrates From Arkansas, Chris T. Mcallister, Henry W. Robison, Renn Tumlison Jan 2018

Additional County Records Of Invertebrates From Arkansas, Chris T. Mcallister, Henry W. Robison, Renn Tumlison

Journal of the Arkansas Academy of Science

No abstract provided.

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The Spatial Context Of “Winning” In Mpa Network Design: Location Matters, Andrew S. Kough, Claire B. Paris, Mark J. Butler Iv Jan 2018

The Spatial Context Of “Winning” In Mpa Network Design: Location Matters, Andrew S. Kough, Claire B. Paris, Mark J. Butler Iv

Biological Sciences Faculty Publications

(First paragraph) Chollett et al. (2017) make the case that a local network of marine protected areas (MPAs) enhances fisheries for Caribbean spiny lobster (Panulirus argus) off the coast of Honduras. However, their simulation focused on one ecoregion where self-recruitment is predicted to be among the highest in the Caribbean (Cowen, Paris, & Srinivasan, 2006). The shallow banks and scattered cays of the Honduran-Nicaraguan Rise, separating the Cayman and Colombian basins, create an obstacle to the powerful southern Caribbean jet (Richardson, 2005), fostering an ideal location for topographically steered eddies and larval retention. Local management,whether based on traditional …

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Canine Emotions: Guidelines For Research, Miiamaaria V. Kujala Jan 2018

Canine Emotions: Guidelines For Research, Miiamaaria V. Kujala

Animal Sentience

In the target article, I called for a discussion on the nature and extent of dogs’ emotions. The commentators generally agreed on the existence of dog emotions, but the diversity and quality of dog emotions, as well as the influence of human social cognition on perceiving dog emotions, raised more debate. To respond to the stimulating commentaries, I touch briefly on the philosophy of (canine) mind and discuss further the benefits of comparing cognition across species, secondary emotions, and the shaping of canine emotions by evolution, breeding and experience. I conclude with suggestions for future research guidelines on studies of …

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Re-Evaluating Captive Chimpanzee “Dominance”: Dominance Hierarchy And Chimpanzee-Caregiver Relationships At Chimpanzee Sanctuary Northwest, Jake Funkhouser Jan 2018

Re-Evaluating Captive Chimpanzee “Dominance”: Dominance Hierarchy And Chimpanzee-Caregiver Relationships At Chimpanzee Sanctuary Northwest, Jake Funkhouser

All Master's Theses

This thesis is composed of two journal-ready articles and an accompanying appendix with additional data and interpretation. Overall, this thesis describes and statistically analyzes dominance relationships in two nonhuman primate groups with novel methods, possible correlations between dominance and testosterone, and uncovers the prominent connection of caregivers to captive chimpanzee social networks. Chapter I addresses current and past variability in behavioral measures and statistical methods to derive dominance rankings. I propose a novel approach to using existing statistical techniques to analyze dominance ranks, context-dependent dominant structures (agonistic competitions, lack of agonism, privileged role, priority access to resources), the reliability of …

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Response Of Three Species Of Monkeys To Caregiver Use Of Species-Typical Behavior, Lillian Anna Stolar Jan 2018

Response Of Three Species Of Monkeys To Caregiver Use Of Species-Typical Behavior, Lillian Anna Stolar

All Master's Theses

Caregivers are a primary part of captive monkey environments. When addressing psychological well-being of captive nonhuman primates, social environment should be considered. Chimpanzees, gorillas, New World monkeys, and Old World monkeys responded positively to interactions with caregivers. Some species showed increased affiliative behaviors and decreased abnormal or self-directed behaviors after interactions. These studies showed that caregivers can affect the behavior of nonhuman primates. Caregivers are underutilized as a source of social interaction for captive nonhuman primates. Utilizing species-typical behaviors during interactions, caregivers and nonhuman primates can communicate and interact in different ways that may be beneficial to both caregiver and …

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Life In The Dirt: Factors Influencing The Behavior And Distribution Of Spea Intermontana In Eastern Washington State, Corey Brumbaugh Jan 2018

Life In The Dirt: Factors Influencing The Behavior And Distribution Of Spea Intermontana In Eastern Washington State, Corey Brumbaugh

All Master's Theses

I divided my thesis into two major studies focusing on the Great Basin Spadefoot Toad, Spea intermontana, at the Beverley Dunes (Beverley, WA). The first study explored the effects of temperature and water level on the rate of metamorphosis. We gathered data on rates of development, survival, body mass, snout-vent length, and hind leg length of metamorphs under 4 treatments: 20C x High Water, 30C x High Water, 20C x Water Loss, and 30C x Water Loss. These data show that temperature has a stronger effect on the overall rate of metamorphosis of Great Basin Spadefoot Toads. The second …

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Single And Pair Housed Chacma Baboons’ (Papio Ursinus) Response To Caregivers’ Use Of Species-Specific Behavior, Josefine Holm Jan 2018

Single And Pair Housed Chacma Baboons’ (Papio Ursinus) Response To Caregivers’ Use Of Species-Specific Behavior, Josefine Holm

All Master's Theses

Most captive primates suffer from stereotypical or abnormal behavior which can be reduced by implementing enrichment protocols. There is, however, often spatial or economic limitations to facilities’ enrichment programs, and implementing the most beneficial and cost-effective enrichment is therefore crucial to ensure the best welfare for captive primates. Social enrichment has been designated as the most effective type of enrichment, but often captive primates cannot be housed in social groups. Through this study, I wanted to determine if species-specific behavioral interactions between human caregivers and captive chacma baboons (Papio ursinus)would alter the baboons’ behaviors, and if these interactions could …

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Intertidal Habitat Utilization By Endangered Green Sturgeon (Acipenser Medirostris), Willapa Bay, Washington, Luke Stilwater Jan 2018

Intertidal Habitat Utilization By Endangered Green Sturgeon (Acipenser Medirostris), Willapa Bay, Washington, Luke Stilwater

All Master's Theses

This study looks at a portion of the designated critical habitat for the threatened southern distinct population segment of green sturgeon (Acipenser medirostris) in Willapa Bay, Washington. Willapa Bay is an intermediate size (258.7mi2) estuary on the southwest coast of Washington State, approximately 30 miles north from the mouth of the Columbia River. Recent studies completed by the National Marine Fisheries Service have shown that significant aggregations of green sturgeon in Willapa Bay occur during the late summer months, and foraging activity for burrowing ghost shrimp (Neotrypaea californiensis) is evidenced by small round feeding pits (30-60 cm diameter) in the …

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Fish Sentience Denial: Muddying The Waters, Lynne U. Sneddon, Javier Lopez-Luna, David C.C. Wolfenden, Matthew C. Leach, Ana M. Valentim, Peter J. Steenbergen, Nabila Bardine, Amanda D. Currie, Donald M. Broom, Culum Brown Jan 2018

Fish Sentience Denial: Muddying The Waters, Lynne U. Sneddon, Javier Lopez-Luna, David C.C. Wolfenden, Matthew C. Leach, Ana M. Valentim, Peter J. Steenbergen, Nabila Bardine, Amanda D. Currie, Donald M. Broom, Culum Brown

Animal Sentience

Recent empirical studies have reported evidence that many aquatic species, including fish, cephalopods and crustaceans, have the capacity for nociception and pain, and that their welfare should be taken into consideration. Some sceptics, rejecting the precautionary principle, have denied that any study demonstrates pain or other aspects of sentience in fish. This target article discusses some of the scientific shortcomings of these critiques through a detailed analysis of a study exploring nociception and analgesia in larval zebrafish.

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Defining Denial And Sentient Seafood, Jennifer Jacquet Jan 2018

Defining Denial And Sentient Seafood, Jennifer Jacquet

Animal Sentience

Sneddon et al. address the scientists who reject the empirical evidence on fish sentience, calling them “sceptics” and their work “denial”. This is the first article to frame the question of fish sentience in these terms, and it provides an obvious opening for social science and humanities research in the science of fish sentience. It is also worth asking what practical changes in the lives of fish might arise from the mounting evidence of their sentience. I suggest that the relationship between sentience and our sense of moral obligation is not as clear as we often assume.

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Jealousy In Dogs? Evidence From Brain Imaging, Peter Cook, Ashley Prichard, Mark Spivak, Gregory S. Berns Jan 2018

Jealousy In Dogs? Evidence From Brain Imaging, Peter Cook, Ashley Prichard, Mark Spivak, Gregory S. Berns

Animal Sentience

Domestic dogs are highly social and have been shown to be sensitive not only to the actions of humans and other dogs but to the interactions between them. We used the C-BARQ scale to estimate dogs’ aggressiveness, and we used noninvasive brain imaging (fMRI) to measure activity in their amygdala (an area involved in aggression). More aggressive dogs had more amygdala activation data while watching their caregiver give food to a realistic fake dog than when they put the food in a bucket. This may have some similarity to human jealousy, adding to a growing body of evidence that differences …

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Finding The Green-Eyed Monster In The Brain Of A Dog, Peter Singer Jan 2018

Finding The Green-Eyed Monster In The Brain Of A Dog, Peter Singer

Animal Sentience

That dogs show behavior suggestive of jealousy has long been known and has been demonstrated under controlled conditions. Cook et al. have now shown arousal in the amygdala when dogs see a caregiver feeding another dog. This finding has ethical significance in two respects. First, the consideration shown by the investigators for the welfare of their experimental subjects sets an example for other researchers using animals. Second, the greater understanding of the emotional lives of animals should lead to more concern for their needs.

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On Jealousy, Envy, Sex Differences And Temperament In Humans And Dogs, Eddie Harmon-Jones, Sylvia K. Harmon-Jones Jan 2018

On Jealousy, Envy, Sex Differences And Temperament In Humans And Dogs, Eddie Harmon-Jones, Sylvia K. Harmon-Jones

Animal Sentience

Cook, Prichard, Spivak, and Berns (2018) find that dogs’ levels of trait aggression are positively correlated with their amygdala activation when observing their caregivers giving a food to a fake dog. The authors conclude that this may provide neural evidence in dogs for the experience of jealousy, an emotion that some psychologists consider to be unique to humans. Here we explain the difference between the emotions of jealousy and envy, suggesting some ideas for future experiments that may help disentangle the experience of jealousy from that of envy in dogs. We also propose ideas for future research that may yield …

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Fake Or Not: Two Prerequisites For Jealousy, Juliane Bräuer, Federica Amici Jan 2018

Fake Or Not: Two Prerequisites For Jealousy, Juliane Bräuer, Federica Amici

Animal Sentience

Cook and colleagues (2018) use a novel approach to test jealousy in dogs. Although such a non-invasive approach is more than welcome in comparative research, several methodological shortcomings limit the impact of this study. We briefly outline two main problems. (1) There is no evidence that the fake dogs in the study were perceived as real, and thus as social rivals, which would be a prerequisite for jealousy. (2) It is questionable whether dogs generally show the cognitive prerequisites for jealousy, such as attentiveness toward a social rival, the ability to understand intentions, and a sense of fairness. We suggest …

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Fill-In-The-Blank-Emotion In Dogs? Evidence From Brain Imaging, Alexandra Horowitz, Becca Franks, Jeff Sebo Jan 2018

Fill-In-The-Blank-Emotion In Dogs? Evidence From Brain Imaging, Alexandra Horowitz, Becca Franks, Jeff Sebo

Animal Sentience

What is needed to make meaningful claims about an animal’s capacity for subjective experience? Cook et al. (2018) attempt to study jealousy in dogs by placing them in a particular context and then seeing whether they display a particular brain state. We argue that this approach to studying jealousy falls short for two related reasons. First, the relationship between jealousy and the selected context is unclear. Second, the relationship between jealousy and the selected brain state (indeed, any single brain state) is unclear. These and other issues seriously limit what this study can show. It is important not to see …

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Evaluating Elasmobranch Bycatch And Shark Depredation In The Georgia Shrimp Fishery, Matthew M. Scanlon Jan 2018

Evaluating Elasmobranch Bycatch And Shark Depredation In The Georgia Shrimp Fishery, Matthew M. Scanlon

College of Graduate Studies: Theses & Dissertations

The Georgia shrimp fishery has seen a dramatic decrease in profit and productivity since the 1980’s due to a number of economic factors. Additional, yet undocumented, pressures on this fishery include interactions between foraging sharks with trawl gear. Fishermen report that sharks frequently bite nets in an attempt to prey on netted fish, resulting in large holes in the gear. Further elasmobranch interactions with trawl gear occur as bycatch; shrimp trawls represent nearly 100% of elasmobranch commercial bycatch in Georgia state waters, the species composition of which is largely unstudied. Shark interactions with nets were detailed through fishery-dependent observations on …

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Role Of Nest Site Microclimate And Food Availability In Chick Development And Reproductive Success In Black-Legged Kittiwakes (Rissa Tridactyla), Lindsay Mae Lacey Jan 2018

Role Of Nest Site Microclimate And Food Availability In Chick Development And Reproductive Success In Black-Legged Kittiwakes (Rissa Tridactyla), Lindsay Mae Lacey

Honors Theses

Seabirds are marine top predators, and as such are often studied as bioindicators of climate shifts (Oswald and Arnold 2012). Though many studies have analyzed the effect of macroclimatic variation on marine prey species availability and thus seabirds, few have analyzed effects of microclimate - fine spatial patterns of climate (Mantua and Hare 2002; Hatch 2013; Kim and Monaghan 2005a). I tested the hypothesis that localized temperature and humidity at nest sites interact with food availability to alter black-legged kittiwake (Rissa tridactyla) nest site quality, chick body condition during growth and development, and reproductive parameters including Julian lay …

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Endocrine And Hematobiochemical Profile Of Lambs Raised In A Semiaridregion With Different Growth Potentials During The Postweaning Period, Shiva Pratap Singh, Gopal Dass, Ramachandran Natesan, Yogender Kushwah, Nandini Sharma, Ashok Kumar Jan 2018

Endocrine And Hematobiochemical Profile Of Lambs Raised In A Semiaridregion With Different Growth Potentials During The Postweaning Period, Shiva Pratap Singh, Gopal Dass, Ramachandran Natesan, Yogender Kushwah, Nandini Sharma, Ashok Kumar

Turkish Journal of Veterinary & Animal Sciences

This study was conducted for establishment of the relationship of blood variables with growth rate of postweaned lambs. Eight lambs each of fast growth (FG; 11.6 ± 0.5 kg live wt. at weaning) and slow growth (SG; 7.7 ± 0.5 kg live wt. at weaning) were monitored fortnightly for endocrine and hematobiochemical variables along with parasitic load and growth performance. Recording of body weight (BW) and average daily gain (ADG) was performed monthly from birth to 180 days. Triiodothyronine (T3) and thyroxine (T4) were significantly (P < 0.05) higher while thyroid-stimulating hormone (TSH) and insulin-like growth factor-1 (IGF-1) were significantly (P < 0.05) lower in FG lambs compared to SG lambs. Blood cell counts, hematocrit, hemoglobin, mean corpuscular volume, and mean corpuscular hemoglobin were significantly (P < 0.05) higher in FG lambs compared to SG lambs. Except for the birth wt., the BW and ADG of FG lambs were significantly (P < 0.05) higher at all time points. Liver enzymes (alkaline phosphatase and alanine aminotransferase) and triglyceride were significantly (P < 0.05) higher in SG lambs compared to FG lambs. These findings indicate a significant influence of growth rate on peripheral concentrations of endocrine and some hematobiochemical variables in lambs. These selected variables can be used for early identification and culling of slow-growing lambs for better economic return to lamb producers.

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A Case Report Of Apatemon Gracilis (Szidat, 1928) Infectionin Domestic Geese In Mainland China, Dandan Liu, Zhennan Zhuo, Jianping Tao, Jinjun Xu Jan 2018

A Case Report Of Apatemon Gracilis (Szidat, 1928) Infectionin Domestic Geese In Mainland China, Dandan Liu, Zhennan Zhuo, Jianping Tao, Jinjun Xu

Turkish Journal of Veterinary & Animal Sciences

This is the first report of the diagnosis and treatment of Apatemon gracilis infection in domestic geese in mainland China confirmed at the molecular level. The mortality of geese reached 10% (150/1500). Necropsy examinations confirmed hemorrhagic inflammation of the small intestine and blood and catarrhal mucus in the enteric cavity. A large number of flukes were found in the first third of the small intestine, with one end buried in the intestinal mucosa, forming lesions at the absorption sites. The ITS-1 sequence of the parasites was amplified by polymerase chain reaction and sequence analysis confirmed that the isolated worms were …

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The Effects Of Three Different Prokinetic Drugs On The Motility Hormones Level In Lambs With Postoperative Ileus, Semi̇h Altan, Kaan Dönmez, Feray Altan, Fahretti̇n Alkan Jan 2018

The Effects Of Three Different Prokinetic Drugs On The Motility Hormones Level In Lambs With Postoperative Ileus, Semi̇h Altan, Kaan Dönmez, Feray Altan, Fahretti̇n Alkan

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to evaluate the effects of the three different prokinetic agents, namely erythromycin, lidocaine, and metoclopramide in lambs with postoperative ileus (POI) using motilin and ghrelin, which are known as motility markers. Twenty lambs were allocated to 4 groups of 5 lambs each. An enterotomy was performed on the ileum of each lamb. Erythromycin (8.8 mg/kg), metoclopramide (0.2 mg/kg), and saline (2 mL) were administered as single dose IM before surgery in the ERT, MET, and CNTR groups, respectively. Lidocaine was administered to the LID group, both as a bolus before (1.3 mg/kg IV) and …

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Comparative Study Of Growth Patterns In Seven Strains Of Japanese Quail Using Nonlinear Regression Modeling, Hadi Farajiarough, Mohammad Rokouei, Ali Maghsoudi, Mahmoud Ghazaghi Jan 2018

Comparative Study Of Growth Patterns In Seven Strains Of Japanese Quail Using Nonlinear Regression Modeling, Hadi Farajiarough, Mohammad Rokouei, Ali Maghsoudi, Mahmoud Ghazaghi

Turkish Journal of Veterinary & Animal Sciences

The aim of this study was to compare the growth pattern of seven strains of Japanese quail including Wild, Italian Speckled, Tuxedo, Scarlett, English white, White button, and A&M Texas by nonlinear growth functions including Gompertz, Richards, logistic, Lopez, and Weibull functions. The body weights of the unselected randomly bred populations of these strains were measured weekly from 1 to 42 days of age and then used to fit functions. The fitness of each function was assessed by statistics including the mean square error, Akaike information criterion, Bayesian information criterion, and adjusted coefficient of determination. The results showed that Gompertz …

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Molecular Detection Of Virulent Mannheimia Haemolytica And Pasteurella Multocida In Lung Tissues Of Pneumonic Sheep From Semiarid Tropics, Rajasthan, India, Fateh Singh, Ganesh Gangaram Sonawane, Rajendra Kumar Meena Jan 2018

Molecular Detection Of Virulent Mannheimia Haemolytica And Pasteurella Multocida In Lung Tissues Of Pneumonic Sheep From Semiarid Tropics, Rajasthan, India, Fateh Singh, Ganesh Gangaram Sonawane, Rajendra Kumar Meena

Turkish Journal of Veterinary & Animal Sciences

The present study was planned to detect the genetic elements of Mannheimia haemolytica and Pasteurella multocida in pneumonic sheep lungs. Pneumonia was diagnosed on the basis of gross pathological lesions. Lung tissues were collected at necropsy of sheep (n = 96) and subjected to isolation of total DNA. The M. haemolytica-specific PHSSA and Rpt2 genes, and the P. multocidaspecific KMT1 and the Omp87 genes were amplified using polymerase chain reaction (PCR). A housekeeping gene targeting the sheep cellular mitochondrial 12S ribosomal DNA was used as an internal control. PCR reactions were optimized using the positive and negative controls. Gene-specific PCR …

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Investigation Of The Efficiency And Safety Of Tilmicosin Phosphate In Treating Experimentalmycoplasmal Infections In Pigs, Xiaohui Zhang, Jinzhe Pan, Ning Wu, Shu Tang, Xiangdong Lei, Yangyang Sun, Joerg Hartung, Endong Bao Jan 2018

Investigation Of The Efficiency And Safety Of Tilmicosin Phosphate In Treating Experimentalmycoplasmal Infections In Pigs, Xiaohui Zhang, Jinzhe Pan, Ning Wu, Shu Tang, Xiangdong Lei, Yangyang Sun, Joerg Hartung, Endong Bao

Turkish Journal of Veterinary & Animal Sciences

In order to evaluate the in vivo therapeutic effect of oral administration of tilmicosin phosphate on mycoplasmal pneumonia in swine and its safety for the infected swine, the model of mycoplasmal pneumonia disease in swine was established by artificial infection, and indices such as efficiency, cure rate, death rate, the score of lung lesion, and the routine blood tests, blood biochemistry, and routine urine tests of tested swine were determined. The results showed that all of the dosage groups of 100 mg/L, 80 mg/L, 60 mg/L of 10% tilmicosin phosphate soluble powder demonstrated distinct therapeutic effects on mycoplasmal pneumonia in …

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Effects Of The Supplementation Of Lamb Rations With Oregano Essential Oil On Theantimicrobial And Antioxidant Metabolism In Meat, Hali̇t İmi̇k, Sevda Urçar, Meryem Aydemi̇r Atasever, Recep Gümüş, Hayrunni̇sa Özlü Jan 2018

Effects Of The Supplementation Of Lamb Rations With Oregano Essential Oil On Theantimicrobial And Antioxidant Metabolism In Meat, Hali̇t İmi̇k, Sevda Urçar, Meryem Aydemi̇r Atasever, Recep Gümüş, Hayrunni̇sa Özlü

Turkish Journal of Veterinary & Animal Sciences

Although oregano essential oil has common use in the cosmetics, pharmaceutical, and food sectors, information on its effects on meat quality and shelf life, when incorporated into lamb feed rations, is scarce. In this study, the effects of oregano essential oil (OEO) in feed on the water activity, pH, lipid peroxidation, color parameters, and microbial counts of the Musculus longissimus dorsi (MLD) were investigated. The control group was fed a basal ration and the OEO1 and OEO2 groups were fed a basal ration supplemented with 200 mg/kg and 400 mg/kg OEO, respectively. Akkaraman lambs were fed experimental rations for a …

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A Stereological Study On Calculation Of Volume Values Of The Cervical Spinalsegments In Ducks, Gamze Çakmak, Hüseyi̇n Karadağ, Zafer Soygüder, Murat Çeti̇n Rağbetli̇, Serkan Yildirim, Haci Keleş Jan 2018

A Stereological Study On Calculation Of Volume Values Of The Cervical Spinalsegments In Ducks, Gamze Çakmak, Hüseyi̇n Karadağ, Zafer Soygüder, Murat Çeti̇n Rağbetli̇, Serkan Yildirim, Haci Keleş

Turkish Journal of Veterinary & Animal Sciences

In the present study, volume values of the cervical segments in the spinal cords of adult ducks weighing 3-4 kg were investigated. Volume values of the grey matter and white matter in the cervical segment of the spinal cord of the ducks were examined stereologically. Ten ducks (genus Anas) without regarding the sex of the animals. All animals were perfused using 10% formaldehyde. The animals were kept in 10% formaldehyde for 1 week to ensure fixation. The ducks were then dissected. The cervical segments were uncovered by removing the cervical vertebrae. Tissue samples were obtained from each of the cervical …

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River Report. State Of The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2018, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University, Gerry Pinto, Gretchen Bielmyer-Fraser, Nisse Goldberg, Anthony Ouellette, An-Phong Le, Radha Pyati, Charles Closmann, Brian P. Zoellner Jan 2018

River Report. State Of The Lower St. Johns River Basin, Florida: Water Quality, Fisheries, Aquatic Life, Contaminants, 2018, Environmental Protection Board, City Of Jacksonville, University Of North Florida, Jacksonville University, Gerry Pinto, Gretchen Bielmyer-Fraser, Nisse Goldberg, Anthony Ouellette, An-Phong Le, Radha Pyati, Charles Closmann, Brian P. Zoellner

State of the River Report

No abstract provided.

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Hunter Harvest Effect On The Breeding Bird Population Of Northern Pintail Anas Acuta In North America, Matthew Wang Jan 2018

Hunter Harvest Effect On The Breeding Bird Population Of Northern Pintail Anas Acuta In North America, Matthew Wang

Journal of Earth and Life Science

Hunter harvest and the effects that it can have on population dynamics is a relationship used by wildlife professionals when making management decisions. Hunter harvest can be compensatory or additive on wildlife populations and instances where hunter harvest has been a key role in a population decline, and sometimes demise, is an occurrence studied in wildlife management. Waterfowl numbers in North America have increased 17% since 1960, but during that same time frame the Northern Pintail population has decreased 40%. Hunter harvest data has been recorded by the U.S. Fish and Wildlife Service since 1961, while they have simultaneously been …

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Wintering American Black Duck Ecology Of Central Appalachia, Sara E. Yannuzzi Jan 2018

Wintering American Black Duck Ecology Of Central Appalachia, Sara E. Yannuzzi

Graduate Theses, Dissertations, and Problem Reports (ETD)

The American black duck (Anas rubripes) is a species of dabbling duck found only in the northeastern part of North America, and widely hunted until its decline. Since the 1950s, the total population has decreased by 53%. Habitat degradation and decline of wintering and breeding wetlands, historic overharvest, and interactions with the mallard (A. platyrhynchos) are attributed as some of the main causes of the black duck population’s decrease. Many policies and taxa- and habitat-specific joint ventures have since been created to aid in studying and improving North American wetlands and black duck populations throughout both their breeding and wintering …

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Spatial Patterns Of Winter Roadside Gray Wolf Sightability In Yellowstone National Park, Jeremy Sunderraj Jan 2018

Spatial Patterns Of Winter Roadside Gray Wolf Sightability In Yellowstone National Park, Jeremy Sunderraj

Undergraduate Theses, Professional Papers, and Capstone Artifacts

Imperfect detection is ubiquitous among wildlife research and can affect research conclusions and management. Detection probability is often included in observation-based models. We leveraged research of gray wolves (Canis lupus) in northern Yellowstone National Park (YNP) to evaluate how the probability of sighting radio collared wolf packs from ground-based observation locations was affected by the characteristics of each spatial location (i.e., distance from the road, visibility (from a viewshed analysis), habitat openness, carcass presence, and wolf group size). We used two complementary approaches focusing on sightings during early (mid-November to mid-December) and late (March) winter periods between 1995 and 2017. …

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Comparative Diet Of Hedgehogs (Atelerix Algirus) In Two Localities In Kabylia, Algeria, Dalila Djennoune, Faiza Marniche, Mansour Amroun, Raphaël Boulay Jan 2018

Comparative Diet Of Hedgehogs (Atelerix Algirus) In Two Localities In Kabylia, Algeria, Dalila Djennoune, Faiza Marniche, Mansour Amroun, Raphaël Boulay

Turkish Journal of Zoology

The present study is the first qualitative and quantitative analysis of the diet of Algerian hedgehogs (Atelerix algirus) in Kabylia, Algeria. The study was carried out between May and October 2014 and covered two different sites, Yakouren (a forested site) and Tizi-Rached (an agricultural site). In Yakouren, the analysis of droppings allowed us to identify 12,050 items grouped into 16 categories of eaten preys, while in Tizi-Rached, 13,543 items grouped into 13 categories of preys were identified. In both locations, the Hymenoptera category is the most eaten type of prey at a rate of 93% in Yakouren and 98% in …

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