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Articles 5371 - 5400 of 36484

Full-Text Articles in Animal Sciences

Population Genomics Of Invasive Rodents On Islands: Genetic Consequences Of Colonization And Prospects For Localized Synthetic Gene Drive, Kevin P. Oh, Aaron B. Shiels, Laura Shiels, Dimitri V. Blondel, Karl J. Campbell, J. Royden Saah, Alun L. Lloyd, Paul Q. Thomas, Fred Gould, Zaid Abdo, John R. Godwin, Antoinette J. Piaggio May 2021

Population Genomics Of Invasive Rodents On Islands: Genetic Consequences Of Colonization And Prospects For Localized Synthetic Gene Drive, Kevin P. Oh, Aaron B. Shiels, Laura Shiels, Dimitri V. Blondel, Karl J. Campbell, J. Royden Saah, Alun L. Lloyd, Paul Q. Thomas, Fred Gould, Zaid Abdo, John R. Godwin, Antoinette J. Piaggio

United States Department of Agriculture Wildlife Services: Staff Publications

Introduced rodent populations pose significant threats worldwide, with particularly severe impacts on islands. Advancements in genome editing have motivated interest in synthetic gene drives that could potentially provide efficient and localized suppression of invasive rodent populations. Application of such technologies will require rigorous population genomic surveys to evaluate population connectivity, taxonomic identification, and to inform design of gene drive localization mechanisms. One proposed approach leverages the predicted shifts in genetic variation that accompany island colonization, wherein founder effects, genetic drift, and island-specific selection are expected to result in locally fixed alleles (LFA) that are variable in neighboring nontarget populations. Engineering …


The Effects Of Trace Mineral Supplementation On Performance, Health, And Carcass Quality Of At-Risk Mineral Deficient Feedlot Cattle, Tevan J. Brady May 2021

The Effects Of Trace Mineral Supplementation On Performance, Health, And Carcass Quality Of At-Risk Mineral Deficient Feedlot Cattle, Tevan J. Brady

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Morbidity in feedlot cattle due to disease is a common economical loss for feedlot producers. Utah is not typically considered a ‘feedlot state’, but there are several producers in the southern part of the state that specialize in receiving at-risk cattle. These cattle are at-risk because they are coming from areas known to be mineral deficient. Areas such as the western US, are known to be deficient in several trace minerals important in immune response. Therefore, it is critical that producers have an adequate plan to decrease the negative effects that this has on economic viability of their beef operations, …


Effect Of Temperature On Questing Activity Of Ixodes Scapularis In A Laboratory Setting, Molly Meagher Apr 2021

Effect Of Temperature On Questing Activity Of Ixodes Scapularis In A Laboratory Setting, Molly Meagher

Thinking Matters Symposium

Understanding deer tick (Ixodes scapularis) behavior is increasingly important due to the species’ northerly range expansion, and consequently, increased human contact. Deer ticks are a major public health concern, as they are the primary vector of Lyme disease and other serious diseases. Differences in questing behavior are of considerable interest as fluctuating weather due to climate change effect the species’ range expansion and time spent questing. Although previous research has examined temperature preferences of tick behavior, there are conflicting reports about direct effects on questing activity. Therefore, I addressed the relationship between temperature and questing behavior of adult deer ticks. …


Effects Of Ibuprofen On Duration Of Fear Responses In Red Claw Crabs, Ryan Shaffer Apr 2021

Effects Of Ibuprofen On Duration Of Fear Responses In Red Claw Crabs, Ryan Shaffer

Thinking Matters Symposium

Pharmaceutical pollution is a growing environmental issue. Chemicals engineered to affect humans persist in the water system and may have unintended effects on animal behavior. Ibuprofen is an anti-inflammatory drug shown to reduce predator avoidance in fish. I chose to examine the effects of ibuprofen on the foraging behavior of red clawed crab (Perisesarma bidens) by measuring time spent in the open. Crabs typically spend most of their time hiding and only expose themselves to danger in order to forage for food. I predicted that crabs treated with the high dose of ibuprofen will spend less time hiding compared to …


How Genetics Plays A Role In Avian Migration, Tyler Bauersfeld Apr 2021

How Genetics Plays A Role In Avian Migration, Tyler Bauersfeld

Thinking Matters Symposium

Avian migration is an adaptive response to seasonal environments, which means that birds move from one region to another on migratory routes due to environmental factors. Migratory behavior is ubiquitous within and among many bird species, and this poster will review two studies of how migratory behavior is affected on a genetic level as well as how avian migration has independently evolved in many different lineages. A study of the Eurasian blackcap from southern France demonstrates how environmental factors and parent lineages affect the genetic behavior of migration. This study also demonstrated how sedentary populations of birds have been shown …


Density Of Free-Roaming Cats Related To Feeding Stations On Hayden Island, Oregon, Olivia Helback, Joe Liebezeit Apr 2021

Density Of Free-Roaming Cats Related To Feeding Stations On Hayden Island, Oregon, Olivia Helback, Joe Liebezeit

University Honors Theses

Free-roaming cats have a devastating impact on wildlife populations with stray/feral cats being the most problematic. In some areas, community members provide these cats with food, water, and shelter often in conjunction with a trap, neuter, return (TNR) program. Hayden Island located north of Portland, Oregon is home to a managed colony of feral and stray cats. Some island residents provide feeding stations for the cats and actively participate in population management. To determine how feeding stations might affect cat spatial distribution, camera traps were placed at 19 different stations in urban and natural areas on Hayden island. Additional annual …


Sustainable Winter-Feeding Practices For Meat Goats Within The Southeastern United States, Nikisha Ryan, Nar Gurung, Jeremy Byrant, Frank Abrahamsen, Wendell Mcelhenney Apr 2021

Sustainable Winter-Feeding Practices For Meat Goats Within The Southeastern United States, Nikisha Ryan, Nar Gurung, Jeremy Byrant, Frank Abrahamsen, Wendell Mcelhenney

Professional Agricultural Workers Journal

Winter feeding systems were evaluated on male Kiko meat goats against the traditional practice of raising goats in the winter months. Forty-Five Kiko bucks were randomly assigned to one of three treatments; Treatment 1, Treatment 2, and Treatment 3 consisted, respectively, of Cosaque Oats, annual Ryegrass, Crimson Clover mix, and 1.0% of BW concentrate supplementation with free choice hay. Forage clippings were analyzed for dry matter, crude protein, and neutral detergent fiber. Body weights were monitored over the grazing period. Blood samples were collected during the experiment, and animals were slaughtered for the evaluation of carcass traits. Data were analyzed …


A Baseline Documentation Report For The Delta Wind Birds Sky Lake Nature Reserve, James Dubberly Apr 2021

A Baseline Documentation Report For The Delta Wind Birds Sky Lake Nature Reserve, James Dubberly

Honors Theses

The purpose of this baseline documentation is to conduct a report on our subject property and discuss the findings. A conservation easement is established by upholding a certain standard of a property’s current condition which makes a baseline documentation necessary for an easement to be enacted. Baseline documentation reports are used as a resource to monitor and enforce the legal agreements of the conservation easement. The subject property is currently owned by the Delta Wind Birds organization. In our scenario, this documentation report will serve to aid in the conversion of our subject property into a conservation easement in which …


Association Of Trim Gene Variation And Lpdv Infection Patterns In Wild Turkeys, Bennett Fry Apr 2021

Association Of Trim Gene Variation And Lpdv Infection Patterns In Wild Turkeys, Bennett Fry

Honors Theses

Emerging infectious diseases pose a serious threat to various species throughout the globe, including humans. The lymphoproliferative disease virus (LPDV) in wild turkeys is an example of disease virus whose impact on its host requires additional study. Although the first description of lymphoproliferative disease came from outbreaks in domestic turkey flocks in Europe, it is now known that LPDV is widespread in wild turkey populations in North America. In an effort to understand what may affect an individual turkey’s susceptibility to this virus, variation in part of the anti-viral TRIM62 gene was investigated. DNA was extracted from hunter-collected, turkey blood …


Influence Of Group Change On Scent Marking In A Wild Population Of Verreaux’S Sifaka (Propithecus Verreauxi), Julia C. Dickerson Apr 2021

Influence Of Group Change On Scent Marking In A Wild Population Of Verreaux’S Sifaka (Propithecus Verreauxi), Julia C. Dickerson

Theses and Dissertations

This study analyzed scent marking rates of wild Verreaux’s sifaka during dispersals to investigate the impact of group changes on olfactory communication. Our results indicate that scent marking is affected by changes in group structure, but other methods of communication likely play a larger role in mediating group membership changes.


Investigating Social Preferences In A High Fission-Fusion Society Of Black And White Ruffed Lemur (Varecia Variegata), Patricia A. Adamo Apr 2021

Investigating Social Preferences In A High Fission-Fusion Society Of Black And White Ruffed Lemur (Varecia Variegata), Patricia A. Adamo

Theses and Dissertations

Wild lemur primates were tested for social preferences across behaviors. Study found highly conservative social preferences that were very consistent across all behavioral states, despite high fission fusion traits common of lemur groups. This finding lays the foundation for using nearest-neighbor as a proxy of social preference for future endeavors.


Feeding Cannabidiol (Cbd)-Containing Treats Did Not Affect Canine Daily Voluntary Activity, Elizabeth M. Morris, Susanna E. Kitts-Morgan, Dawn M. Spangler, Jessica Gebert, Eric S. Vanzant, Kyle R. Mcleod, David L. Harmon Apr 2021

Feeding Cannabidiol (Cbd)-Containing Treats Did Not Affect Canine Daily Voluntary Activity, Elizabeth M. Morris, Susanna E. Kitts-Morgan, Dawn M. Spangler, Jessica Gebert, Eric S. Vanzant, Kyle R. Mcleod, David L. Harmon

Animal and Food Sciences Faculty Publications

Growing public interest in the use of cannabidiol (CBD) for companion animals has amplified the need to elucidate potential impacts. The purpose of this investigation was to determine the influence of CBD on the daily activity of adult dogs. Twenty-four dogs (18.0 ± 3.4 kg, 9 months−4 years old) of various mixed breeds were utilized in a randomized complete block design with treatments targeted at 0 and 2.5 mg (LOW) and at 5.0 mg (HIGH) CBD/kg body weight (BW) per day split between two treats administered after twice-daily exercise (0700–0900 and 1,700–1,900 h). Four hours each day [1,000–1,200 h (a.m.) …


305— Effects Of Anthropogenic Noise On Frog Breeding Populations In Geneseo, Jack Barbosa, Robert Colbath, Lydia Gleason Apr 2021

305— Effects Of Anthropogenic Noise On Frog Breeding Populations In Geneseo, Jack Barbosa, Robert Colbath, Lydia Gleason

GREAT Day Posters

With both amphibians and their wetland habitats in decline, it is critical to understand what ponds in the local landscape are used as breeding sites. Male frogs advertise for mates in the spring and summer by producing species-specific vocalizations at potential breeding sites. We are using acoustic recordings to examine three local sites for their use for breeding by frogs. Acoustic recordings collected during May 2020 will be analyzed to determine species abundance based on the temporal patterns of activity. By analyzing how the soundscapes and holistic metric of the habitats differ between sites can we understand the frogs' habits. …


Decline In Amphibian Health In Local Stream, Elyse Vetter, Elise Dearment, Colton Russell, Audrey Fontes, Lee Kats Apr 2021

Decline In Amphibian Health In Local Stream, Elyse Vetter, Elise Dearment, Colton Russell, Audrey Fontes, Lee Kats

Seaver College Research And Scholarly Achievement Symposium

Many local streams of the Santa Monica Mountains are populated by the native California Newt, Taricha torosa, a species of special concern. Arroyo Sequit is one of these streams, the upper and lower portions of which are split by a culvert and the Mulholland Highway. This stream and the surrounding areas burned during the Woolsey fire of 2018. Since the fire, construction has been ongoing in and around the stream. Two years post-fire (during the summer of 2020) significantly more newts were found in the stream than years prior. A large proportion of these newts were unhealthy in appearance, …


Conspecific Aggression Of Invasive Crayfish, P. Clarkii, In Response To Chemical Cues, Elyse Vetter, Elise Dearment, Audrey Fontes, Gary Bucciarelli, Lee Kats Apr 2021

Conspecific Aggression Of Invasive Crayfish, P. Clarkii, In Response To Chemical Cues, Elyse Vetter, Elise Dearment, Audrey Fontes, Gary Bucciarelli, Lee Kats

Seaver College Research And Scholarly Achievement Symposium

Red Swamp Crayfish, Procambarus clarkii, have caused vast damage to the stream ecosystem of the Santa Monica Mountains, following their invasive introduction. Through their extensive eating habits, high levels of aggression, and responsiveness to environmental stimuli, P. clarkii have a tremendous impact on the success of native species in the Santa Monica Mountains. With exposure to chemical cues, crayfish are able to perceive threats and react accordingly. To determine the extent of such chemoreception, pairs of P. clarkii were tested in the laboratory for conspecific aggression in the presence of native newt, native frog, and conspecific alarm cues. The …


The Effects Of Symbiote Ostracods On Invasive Crayfish Behavior, Audrey Fontes, Elyse Vetter, Gary Bucciarelli, Lee Kats Apr 2021

The Effects Of Symbiote Ostracods On Invasive Crayfish Behavior, Audrey Fontes, Elyse Vetter, Gary Bucciarelli, Lee Kats

Seaver College Research And Scholarly Achievement Symposium

Invasive crayfish, Procambarus clarkii, are known to negatively impact the biodiversity of Santa Monica Mountain streams. Small symbiotes, ostracods, live on Procambarus clarkii in some local streams. However, their effect on the behaviour of invasive crayfish is unknown. We used an aqueous chlorobutanol solution to remove ostracods from crayfish. We paired control crayfish with those that had ostracods removed and scored aggressive interactions. Crayfish without ostracods were found to be significantly more aggressive towards crayfish with ostracods. When we compared feeding behavior, we found that crayfish without ostracods consumed food more quickly than control crayfish. We again subjected crayfish …


Phytochemical Screening, Antimicrobial Activity Of Gemmotherapeutically White Mulberry (Morus Alba) Leaves, Abu Ul Hassan Faiz, Lariab Zahara Faiz Apr 2021

Phytochemical Screening, Antimicrobial Activity Of Gemmotherapeutically White Mulberry (Morus Alba) Leaves, Abu Ul Hassan Faiz, Lariab Zahara Faiz

Journal of Bioresource Management

The present study was designed to find out phytochemical analysis and antimicrobial activity of leaves of Mulberry plant. The phytochemical analysis was performed on quantitative and qualitative basis. The qualitative basis indicated the presence of alkaloids, glycosides, flavonoids, steroids, tannins, saponins and Anthraquinone. The quantitative analysis showed alkaloids (40%), glycosides (20.05%), flavonoids (14%), steroids (3.5%), tannins (11.9%) and saponins (11.5%) and anthraquinone (0.5%) presence. Antimicrobial activity against bacteria has been observed in the leaves of Mulberry (Morus alba) and showed zone of inhibition, Escherichia coli (7±3.3) mm, Staphylococcus aurous (8±3.1), Bacillus subtilis (9±2.5), Pasturella multocida (8±3.1) mm.


Seasonal Plumage Condition Variation And The Thermal Value Of The Feather Coats Of House Sparrows (Passer Domesticus), Jordana Mf Graveley, Margaret Rubega, Kevin R. Burgio Apr 2021

Seasonal Plumage Condition Variation And The Thermal Value Of The Feather Coats Of House Sparrows (Passer Domesticus), Jordana Mf Graveley, Margaret Rubega, Kevin R. Burgio

Honors Scholar Theses

Feathers are critical to how birds thermoregulate, and thus their total energy balance. The feather coat insulates birds by trapping air next to the skin and acting as a physical barrier to heat loss. Despite previous work studying thermal balance in birds, relatively few studies have focused on the thermal contribution of the feather coat alone; most studies have focused on physiological and behavioral responses. Moreover, to our knowledge, no studies have directly measured the effect of feather wear through the annual cycle on the thermal performance of the feather coat. To address this, we used a thermal camera to …


Winter Skate (Leucoraja Ocellata) Neurocranium, Daulton J. Scharf, David W. Kerstetter Apr 2021

Winter Skate (Leucoraja Ocellata) Neurocranium, Daulton J. Scharf, David W. Kerstetter

All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series

Prepared Winter Skate Jaw


Breeding Ecology And Nest- Site Selection Of Turtle Doves (Streptopelia Turtur) In Three New Orchard Habitats, Thilelli Aitouakli, Ettayib Bensaci Apr 2021

Breeding Ecology And Nest- Site Selection Of Turtle Doves (Streptopelia Turtur) In Three New Orchard Habitats, Thilelli Aitouakli, Ettayib Bensaci

Journal of Bioresource Management

The main aim of our work was to investigate the breeding parameters in three orchard types in Algeria (apple, cherry and nectarine) for better conservation of existing species. A total of 149 active Turtle dove nests were monitored in these man–made agro-systems. Egg laying occurred from early May and continued until mid-August. Egg laying started later in cherry trees and stopped earlier in nectarines. Nest density was higher in apple orchards. Nests were located higher in nectarine. Clutch size was similar among orchard types. Northeast was the dominant orientation in all orchards. Breeding success was higher than that recorded in …


Winter Skate (Leucoraja Ocellata) Jaw, Krystal Renta, David Kerstetter Apr 2021

Winter Skate (Leucoraja Ocellata) Jaw, Krystal Renta, David Kerstetter

All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series

Jaw prep from Winter Skate (Leucoraja ocellata)


Barndoor Skate (Dipturus Laevis) Jaw Prep, Nathan P. Andrews, David Kerstetter Apr 2021

Barndoor Skate (Dipturus Laevis) Jaw Prep, Nathan P. Andrews, David Kerstetter

All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series

Jaw Prep from Barndoor Skate (Dipturis laevis)


Effects Of Farrowing Stall Layout And Number Of Heat Lamps On Sow And Piglet Behavior, Suzanne M. Leonard, Hongwei Xin, Tami M. Brown-Brandl, Brett C. Ramirez, Anna K. Johnson, Somak Dutta, Gary A. Rohrer Apr 2021

Effects Of Farrowing Stall Layout And Number Of Heat Lamps On Sow And Piglet Behavior, Suzanne M. Leonard, Hongwei Xin, Tami M. Brown-Brandl, Brett C. Ramirez, Anna K. Johnson, Somak Dutta, Gary A. Rohrer

Department of Animal Science: Faculty Publications

Farrowing stalls are used in the United States swine industry to reduce pre-weaning piglet mortality, enable efficient individual animal management, and decrease facility construction and operating costs. The quantity and quality of space provided for sows and piglets in farrowing stalls are important economic and welfare considerations. To further explore the impacts of farrowing stall space allocation, a large-scale field study was conducted to compare sow and piglet behavior when housed in three farrowing stall layouts (TSL – traditional stall layout, ECSL – expanded creep area stall layout, ESCSL – expanded sow and creep area stall layout) with either one …


A Guide To Helminth Parasites Reported From Shorebirds (Charadriidae) From The Americas, Albert G. Canaris, Sofia Capasso, Gay J. Canaris Apr 2021

A Guide To Helminth Parasites Reported From Shorebirds (Charadriidae) From The Americas, Albert G. Canaris, Sofia Capasso, Gay J. Canaris

MANTER: Journal of Parasite Biodiversity

The shorebird family Charadriidae in the Americas consists of 21 native and 7 vagrant species. Members of the family occupy a diversity of open habitats, ranging from Arctic tundra during nesting, coastal sands, and mudflats to inland prairies, savannas, and wetlands. Some native plovers migrate from nesting grounds in North America to wintering grounds in South America (Hayman et al., 1986; Paulson, 2005; Winkler et al., 2020). Our search of the literature revealed the following: 17 of 28 host species infected with helminth parasites, 153 helminth species, and 199 infections involving 13 geographic areas. The purpose of this guide is …


Blue Jay Call Profile In Disparate Environments, Daniel A. Gesualdi Apr 2021

Blue Jay Call Profile In Disparate Environments, Daniel A. Gesualdi

Pell Scholars and Senior Theses

Many species of birds have been observed to develop higher-pitched calls in urban environments; however local Blue Jays are unstudied (Mockford and Marshall, 2009). The urban environment's high noise pollution imposes a significant fitness challenge; then, the urban Jay calls will be different (higher) than rural Jay(Parris and Schneider, 2009). A series of recordings were taken in rural and urban environments; it was clear that there is a significant increase in maximum and minimum kHz in urban jays than rural jays. These results suggest that blue jays alter their calls to accommodate the environmental factors in urban settings similar to …


A High-Androgen Microenvironment Inhibits Granulosa Cell Proliferation And Alters Cell Identity, Renee Mcfee Fee, Sarah Romereim, Alexandria P. Snider, Adam F. Summers, William E. Pohlmeier, Scott G. Kurz, Robert A. Cushman, John S. Davis, Jennifer R. Wood, Andrea S. Cupp Apr 2021

A High-Androgen Microenvironment Inhibits Granulosa Cell Proliferation And Alters Cell Identity, Renee Mcfee Fee, Sarah Romereim, Alexandria P. Snider, Adam F. Summers, William E. Pohlmeier, Scott G. Kurz, Robert A. Cushman, John S. Davis, Jennifer R. Wood, Andrea S. Cupp

Department of Animal Science: Faculty Publications

A naturally occurring bovine model with excess follicular fluid androstenedione (High A4), reduced fertility, and polycystic ovary syndrome (PCOS)-like characteristics has been identified. We hypothesized High A4 granulosa cells (GCs) would exhibit altered cell proliferation and/or steroidogenesis. Microarrays of Control and High A4 GCs combined with Ingenuity Pathway Analysis indicated that High A4 GCs had cell cycle inhibition and increased expression of microRNAs that inhibit cell cycle genes. Granulosa cell culture confirmed that A4 treatment decreased GC proliferation, increased anti-Müllerian hormone, and increased mRNA for CTNNBIP1. Increased CTNNBIP1 prevents CTNNB1 from interacting with members of the WNT signaling pathway thereby …


[Squalus Acanthus (Spiny Dogfish Shark)]Jaw, Ally E. Sheehan Apr 2021

[Squalus Acanthus (Spiny Dogfish Shark)]Jaw, Ally E. Sheehan

All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series

Jaw from Female, [length] 6cm, [width] 5.5 cm [Squalus acanthias (Sping Dogfish shark)]


Spiny Dogfish (Squalus Acanthias) Jaw Prep, Olivia Williams, David Kerstetter Apr 2021

Spiny Dogfish (Squalus Acanthias) Jaw Prep, Olivia Williams, David Kerstetter

All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series

Jaw from female spiny dogfish (Squalus acanthias)


Spiny Dogfish (Squalus Acanthias) Jaw, Jordan Warren, David Kerstetter Apr 2021

Spiny Dogfish (Squalus Acanthias) Jaw, Jordan Warren, David Kerstetter

All Scans: Kerstetter Fisheries and Avian Ecology 3D Scan Series

Jaw from approximately 1 m total length Spiny Dogfish (Squalus acanthias).


Connecting Environment And Phenotype: Deciphering Mechanisms Of Diapause Entry And Exit In The Annual Killifish Austrofundulus Limnaeus, Erin Monica Davis Apr 2021

Connecting Environment And Phenotype: Deciphering Mechanisms Of Diapause Entry And Exit In The Annual Killifish Austrofundulus Limnaeus, Erin Monica Davis

Dissertations and Theses

Embryonic development is complex, dynamic, and dependent on environmental factors. Mechanisms of sensing and integrating environmental stimuli are diverse, and understanding these mechanisms in extant species can elucidate how complex phenotypes emerge from genomic information expressed in an environmental context. In Austrofundulus limnaeus, an annual killifish with alternative developmental trajectories, light and temperature are vital factors that determine if an embryo will enter a state of diapause. We hypothesize that embryos of A. limnaeus use the vitamin D3 signaling pathway as a vehicle to incorporate these ecological signals into their developmental programing. Here we provide evidence of …