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Articles 11671 - 11700 of 36498

Full-Text Articles in Animal Sciences

Development Of A Wild Infant Woolly Monkey Social Interactions, Time Allocation And Behavior Of A Wild Lagothrix Lagotricha Poeppigii Infant And Her Mother, Saba Zewdie Apr 2017

Development Of A Wild Infant Woolly Monkey Social Interactions, Time Allocation And Behavior Of A Wild Lagothrix Lagotricha Poeppigii Infant And Her Mother, Saba Zewdie

Independent Study Project (ISP) Collection

The lowland woolly monkey (Lagothrix lagotricha poeppigii), like all species of woolly monkey, is extremely threatened due to anthropologic activities such as deforestation, petroleum drilling and commercial hunting across their habitat. Due to their low reproductive rate and low reproductive success in captivity, the captive population is decreasing every year as habitat loss increases. In late February of 2017 an infant female was born on the island of Sumak Allpa, a monkey rehabilitation organization and reserve in the western Ecuadorian Amazon. The woolly monkeys are completely independent on the reserve; and as such her birth marks the first …


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, …


Avian Species And Family Composition Along Elevational And Disturbance Gradients In Santa Fe National Park, Veraguas Province, Panamá, Benjamin Shipley Apr 2017

Avian Species And Family Composition Along Elevational And Disturbance Gradients In Santa Fe National Park, Veraguas Province, Panamá, Benjamin Shipley

Independent Study Project (ISP) Collection

Elevational gradients are some of the most well-known and researched biological trends. However, how species diversity varies with elevation differs by taxa and location. One hypothesis suggests that bird diversity decreases with increasing elevation in the tropics. In addition, bird diversity may decrease along the forest edge and in areas of increasing disturbance. Therefore, in this study I surveyed avian diversity along an elevational gradient in Santa Fe National Park, Veraguas, Panamá using point-count observations. Thirty-six point-count locations in 3 elevation zones were surveyed between 19 Apr and 29 Apr 2017. Shannon diversity, richness, and evenness were calculated for both …


Fish Community Assessment Of The Bonyic And Teribe Rivers Within The Naso-Teribe Territory Bocas Del Toro, Panama: Possible Implications Of Bonyic Dam., Shaylyn Austin Apr 2017

Fish Community Assessment Of The Bonyic And Teribe Rivers Within The Naso-Teribe Territory Bocas Del Toro, Panama: Possible Implications Of Bonyic Dam., Shaylyn Austin

Independent Study Project (ISP) Collection

In the Changuinola/Teribe watershed of Bocas Del Toro, Panama, changes to the fluvial system due to the recently constructed Bonyic Dam have implications connected to the biodiversity of a UNESCO Biosphere Reserve and the livelihoods of thousands of people of the Naso-Teribe indigenous group. This study investigated the composition of fish communities in 6 study sites in 3 different areas in relation to the Bonyic Dam. A total of 318 individual fish were captured, representing 5 families and 10 species, using the cast net sampling method. The biodiversity was analyzed using Simpson’s Diversity Index, Evenness Index, species richness, and species …


Changes In The Breeding Range Of The Broad-Winged Hawk (Buteo Platypterus) Due To Habitat Fragmentation In The Northern Appalachian Region, Rachael M. Pruitt Apr 2017

Changes In The Breeding Range Of The Broad-Winged Hawk (Buteo Platypterus) Due To Habitat Fragmentation In The Northern Appalachian Region, Rachael M. Pruitt

Student Publications

The Broad-winged Hawk (BWHA), Buteo platypterus, a small, secretive hawk with distinguishing broad black tail bands, breeds in northeastern North America. The hawks nest in deciduous or mixed forest, often near water, and close to clearings or forest edges. Land conversion and fragmentation alters the landscape and reduces the area of contiguous forest used by BWHA. This study seeks to determine the habitat metrics that may be influencing the apparent breeding range declines of the BWHA at the landscape scale. Landscape characteristics and BWHA presence data from 18,684 Breeding Bird Atlas blocks (each about 25km2) from Ohio, West Virginia, Maryland, …


Growing South Dakota (Spring 2017), College Of Agriculture &. Biological Sciences Apr 2017

Growing South Dakota (Spring 2017), College Of Agriculture &. Biological Sciences

Growing South Dakota (Publication of the College of Agriculture, Food and Environmental Sciences)

This issue contains the 2016 South Dakota Agricultural Experiment Station Annual Report.

[Page] 3 Opportunities With Oats SDSU Researchers Strive to Improve Varieties [Page] 6 Stopping Stem Canker Plant Pathologists Making Progress To Keep This Disease At Bay
[Page] 7 Disease Detectives Vet Scientists Researching Another Emerging Virus [Page] 8 Community Support Devastating West River Fire Brings Ag Industry Together
[Page] 10 Research In Progress Dakota Lakes Research Farm Investigates Three Big Ideas
[Page] 14 Water Quality Quest Understanding E. Coli Behavior Aims To Aid Water Quality In Rivers & Streams
[Page] 15 Verifying Ag Land Valuation Researchers Assist In …


Management Strategy Evaluation For The Atlantic Surfclam (Spisula Solidissima) Using A Spatially Explicit, Vessel-Based Fisheries Model, Kelsey M. Kuykendall, Eric N. Powell, John M. Klink, Paula T. Moreno, Robert T. Leaf Apr 2017

Management Strategy Evaluation For The Atlantic Surfclam (Spisula Solidissima) Using A Spatially Explicit, Vessel-Based Fisheries Model, Kelsey M. Kuykendall, Eric N. Powell, John M. Klink, Paula T. Moreno, Robert T. Leaf

CCPO Publications

The commercially valuable Atlantic surfclam (Spisula solidissima) is harvested along the northeastern continental shelf of the United States. Its range has contracted and shifted north, driven by warmer bottom water temperatures. Declining landings per unit of effort (LPUE) in the Mid-Atlantic Bight (MAB) is one result. Declining stock abundance and LPUE suggest that overfishing may be occurring off New Jersey. A management strategy evaluation (MSE) for the Atlantic surfclam is implemented to evaluate rotating closures to enhance Atlantic surfclam productivity and increase fishery viability in the MAB. Active agents of the MSE model are individual fishing vessels with …


Zebrafish As A Model For Post-Traumatic Stress Disorder (Ptsd), Bernadette Johnson Apr 2017

Zebrafish As A Model For Post-Traumatic Stress Disorder (Ptsd), Bernadette Johnson

Honors Theses

Post-traumatic stress disorder (PTSD) is a psychological disorder with limited treatment options. Molecular mechanisms that cause PTSD remain unclear due to a lack of viable animal models. Considering the behavioral similarities between zebrafish (Danio rerio) and humans, their social nature, and functional parallels between select brain regions, we hypothesized that zebrafish can demonstrate PTSD and that antioxidant treatment will prevent PTSD induction. To test this hypothesis, adult zebrafish were exposed to a traumatic event then were tested immediately and three weeks after the event. Traumatized fish exhibited non-social behavior, spending 7000 fold less time interacting with tank mates then their …


An Attempt To Update A Checklist And Some Other Aspects Of Murree Hills’ Avifauna, Abulhasan Faiz, Fakhar -I- Abbas, Adila Nazli, Fakhra Nazir Apr 2017

An Attempt To Update A Checklist And Some Other Aspects Of Murree Hills’ Avifauna, Abulhasan Faiz, Fakhar -I- Abbas, Adila Nazli, Fakhra Nazir

Journal of Bioresource Management

Birds are vital component of biodiversity as they are playing a significant role in an ecosystem. Increasing human interference might have affected previously reported diversity of birds. This study was designed to collect information about birds check list data of Murree hills. Area was surveyed at different times of day and different months of season. During visits, pictures of birds were taken and identification as well as preparation of list was carried out. Comparison of new checklist with previous literature was done in order to get revised checklist of existing species.


A Revision And Pectoral Guide To The Checklist Of Birds Of Salt Range, Zahid Iqbal Khan, Adila Nazli, Fakhra Nazir, Madeeha Manzoor Apr 2017

A Revision And Pectoral Guide To The Checklist Of Birds Of Salt Range, Zahid Iqbal Khan, Adila Nazli, Fakhra Nazir, Madeeha Manzoor

Journal of Bioresource Management

Birds as major important component of biodiversity provide a vital aspect of nature’s beauty and completes important ecological role in ecosystem. Current study was designed to gather baseline information about birds of salt range which tends to be modifying with the passage of time. The area was surveyed, pictures of birds were taken and after identification a checklist was formulated and changes in biodiversity was notified.


A Check List Of The Avifauna Of Loi-Bher Wildlife Park Islamabad, Madeeha Manzoor, Sabiha Shamim, Fida Muhammad Khan Apr 2017

A Check List Of The Avifauna Of Loi-Bher Wildlife Park Islamabad, Madeeha Manzoor, Sabiha Shamim, Fida Muhammad Khan

Journal of Bioresource Management

Despite its relatively small area, Loi-Bher wild life park is quite diverse with respect to the avifauna. The common bird species found in the area are: bulbuls, pies, pigeons, parakeets, mynas, babblers, warblers, rollers, bee-eaters, doves, crows and pheasants. Over 40 species of Broad-leaved trees, shrubs and woody climbers have been identified in this zone e.g. Acacia modesta, Morus alba, Bauhinia variegata, Punica granatum, Aristida cynnantha, Acacia nilotica, Dalbergia sisso, etc. Human settlements in designated natural areas of the Loi-Bher wild life park constitute the most serious threat to the park resources.


A Study On The Birds Of Urban Islamabad In Moonsoon Season, Ehjaz Raza Abbas, Sabiha Shamim, Fida Muhammad Khan Apr 2017

A Study On The Birds Of Urban Islamabad In Moonsoon Season, Ehjaz Raza Abbas, Sabiha Shamim, Fida Muhammad Khan

Journal of Bioresource Management

Every species constituting the fauna of an environment plays an important role in various aspects of Ecology. Cataloging of available diversity provides base line for any advancement in conservation. This study was designed to gather information from the field and literature to formulate a checklist of birds. Compartments of study area were visited on appropriate timing and compared with available literature. A checklist was formulated. Comparisons with the existing lists were made and the new distribution of birds was reported.


Dollars From The Sea: Jacksonville And The Ocean Business, Committee Of 100 Jacksonville Area Chamber Of Commerce Mar 2017

Dollars From The Sea: Jacksonville And The Ocean Business, Committee Of 100 Jacksonville Area Chamber Of Commerce

City and Regional Planning -- Florida

Book details Jacksonville's oceanographic history 1967-1974


Estimation Of The Trichomonad Concentration In Beef Bull Preputial Samples And Resultant Population Effect Of Pooling On Detection Of Tritrichomonas Foetus Using Qpcr, David J. Wilson, Thomas J. Baldwin, Amanda Wilhelm, Chelsea H. Whitehouse, Jennifer L. Bunnell, Kerry A. Rood, Arnaud Van Wettere Mar 2017

Estimation Of The Trichomonad Concentration In Beef Bull Preputial Samples And Resultant Population Effect Of Pooling On Detection Of Tritrichomonas Foetus Using Qpcr, David J. Wilson, Thomas J. Baldwin, Amanda Wilhelm, Chelsea H. Whitehouse, Jennifer L. Bunnell, Kerry A. Rood, Arnaud Van Wettere

Animal, Dairy, and Veterinary Science Faculty Publications

The primary objective was assessment of effect of sample pooling on Tritrichomonas foetus detection using qPCR in beef bulls within 5 logs of trichomonad concentration in spiked preputial samples. The secondary objective was to use qPCR Ct values to estimate the percentage of beef bulls in the field population within each log of trichomonad concentration. Solutions containing none, 1,10,100,1000 and 10,000 trichomonads (T)/ml were made and tested by qPCR. Test sensitivities for single positive samples were: 1 T/ml, 20/40 (50%); 10 T/ml, 40/40 (100%); 100 T/ml, 40/40 (100%); 1000 T/ml, 40/40 (100%); 10,000 T/ml, 40/40 (100%). For 5-sample pools (1 …


Exogenous Lactobacilli Mitigate Microbial Changes Associated With Grain Fermentation (Corn, Oats, And Wheat) By Equine Fecal Microflora Ex Vivo, Brittany E. Harlow, Laurie M. Lawrence, Patricia A. Harris, Glen E. Aiken, Michael D. Flythe Mar 2017

Exogenous Lactobacilli Mitigate Microbial Changes Associated With Grain Fermentation (Corn, Oats, And Wheat) By Equine Fecal Microflora Ex Vivo, Brittany E. Harlow, Laurie M. Lawrence, Patricia A. Harris, Glen E. Aiken, Michael D. Flythe

Animal and Food Sciences Faculty Publications

Cereal grains are often included in equine diets. When starch intake exceeds foregut digestion starch will reach the hindgut, impacting microbial ecology. Probiotics (e.g., lactobacilli) are reported to mitigate GI dysbioses in other species. This study was conducted to determine the effect of exogenous lactobacilli on pH and the growth of amylolytic and lactate-utilizing bacteria. Feces were collected from 3 mature geldings fed grass hay with access to pasture. Fecal microbes were harvested by differential centrifugation, washed, and re-suspended in anaerobic media containing ground corn, wheat, or oats at 1.6% (w/v) starch and one of five …


A Reexamination The Freshwater Mussels (Family Unionidae) In Lower Big Walnut Creek, Kierra M. Lathrop Mar 2017

A Reexamination The Freshwater Mussels (Family Unionidae) In Lower Big Walnut Creek, Kierra M. Lathrop

Undergraduate Distinction Papers

Freshwater mussels (family Unionidae) have become increasingly rare as the threats to water quality, habitat quality, and other aquatic animals, which the mussels depend on, have increased. The absence of mussels can provide evidence that one of these factors is insufficient. Lower Big Walnut Creek (BWC) is known to support a diverse community of mussels but they are unevenly distributed throughout the creek with abundance, density, and richness being high in the upper section, very low in the midsection, and intermediate in the lower section. It has been suggested water quality nor symbiotic fish host communities are responsible for this …


Type Specimens Of Hawaiian Land Snails In The Smithsonian Institution, Natural Museum Of Natural History, With Lectotype Designations., Kenneth Hayes Mar 2017

Type Specimens Of Hawaiian Land Snails In The Smithsonian Institution, Natural Museum Of Natural History, With Lectotype Designations., Kenneth Hayes

Department of Biology Faculty Publications

Yeung, Norine W., Robert H. Cowie, Kenneth A. Hayes, and Ellen E. Strong. Type Specimens of HawaiianLand Snails in the Smithsonian Institution, National Museum of Natural History, with Lectotype Designations.Smithsonian Contributions to Zoology, number 647, vi + 34 pages, 11 figures, 2017. — Pacific islandland snail faunas are among the most threatened faunas in the world, having suffered a higher rate of extinctionthan any other major animal group. The Hawaiian land snails are among the most species-rich and mostseverely affected of these faunas, yet the current status of most of the Hawaiian species is unknown. Most ofthe major taxonomic studies …


The Phenology Of Sand Crabs, Lepidopa Benedicti (Decapoda: Albuneidae), Zen Faulkes Mar 2017

The Phenology Of Sand Crabs, Lepidopa Benedicti (Decapoda: Albuneidae), Zen Faulkes

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Albuneid sand crabs are widespread on sandy beaches around the world, but because they conceal themselves by digging in sand and are often found at low densities, little is known about their basic biology. Lepidopa species were collected from the beaches of South Padre Island, Texas, on the western coast of Gulf of Mexico, a location that had previously been suggested to act as a population sink. The site contained Lepidopa benedicti and L. websteri, although the latter was extremely rare (collected three times in 5 years). There was significant variation in abundance across the year, with higher densities …


A Critical Analysis Of The Direct Effects Of Dredging On Fish, Amelia S. Wenger, Euan S. Harvey, Shaun K. Wilson, Christopher A. Rawson, Stephen J. Newman, Douglas Clarke, Benjamin J. Saunders, Nicola Browne, Michael J. Travers, Jennifer L. Mcilwain, Paul L A Erftemeijer, Jean-Paul A. Hobbs, Dianne L. Mclean, Martial Depczynski, Richard D. Evans Mar 2017

A Critical Analysis Of The Direct Effects Of Dredging On Fish, Amelia S. Wenger, Euan S. Harvey, Shaun K. Wilson, Christopher A. Rawson, Stephen J. Newman, Douglas Clarke, Benjamin J. Saunders, Nicola Browne, Michael J. Travers, Jennifer L. Mcilwain, Paul L A Erftemeijer, Jean-Paul A. Hobbs, Dianne L. Mclean, Martial Depczynski, Richard D. Evans

Fisheries Research Articles

Dredging can have significant impacts on aquatic environments, but the direct effects on fish have not been critically evaluated. Here, a meta-analysis following a conservative approach is used to understand how dredging-related stressors, including suspended sediment, contaminated sediment, hydraulic entrainment and underwater noise, directly influence the effect size and the response elicited in fish across all aquatic ecosystems and all life-history stages. This is followed by an in-depth review summarizing the effects of each dredging-related stressor on fish. Across all dredging-related stressors, studies that reported fish mortality had significantly higher effect sizes than those that describe physiological responses, although indicators …


The Effect Of Water Levels On Crayfish Aggression, Emory B. Johnson, Sarah E. Blase Mar 2017

The Effect Of Water Levels On Crayfish Aggression, Emory B. Johnson, Sarah E. Blase

Seaver College Research And Scholarly Achievement Symposium

Crayfish are a very prevalent invasive species that affect many different environments all over the world. Crayfish, specifically Procambarus clarkii, are an invasive species that have currently taken a foothold in the Santa Monica mountains and are threatening native stream species. There is currently a severe drought occurring in the Santa Monica mountains. The drought has been reshaping many aquatic environments by limiting space and resources such as food and shelter. Crayfish are a very aggressive species and adversely affect the habitat they inhabit by rapidly colonizing, burrowing, and their voracious diets. Due to the adverse effects crayfish can have …


The North American Whistling-Ducks, Pochards, And Stifftails, Paul A. Johnsgard Mar 2017

The North American Whistling-Ducks, Pochards, And Stifftails, Paul A. Johnsgard

Zea E-Books Collection

Although the 12 species representing three waterfowl tribes described in this volume are not closely related, they fortuitously provide an instructive example of adaptive evolutionary radiation within the much larger waterfowl lineage (the family Anatidae), especially as to their divergent morphologies, life histories, and social behaviors.

The whistling-ducks (Dendrocygna), with three known North American species, are notable for their permanent pair-bonds, extended biparental family care, and strong social cohesion. In contrast, males of the five typical pochards of North American diving ducks (Aythya) establish monogamous pair-bonds that are maintained only long enough to assure that the female’s eggs are fertilized. …


Quantifying The Impacts Of A Novel Predator: The Distinctive Case Of The Oregon Spotted Frog (Rana Pretiosa) And The Invasive American Bullfrog (Rana (Aquarana) Catesbeiana), Kyle Scott Tidwell Mar 2017

Quantifying The Impacts Of A Novel Predator: The Distinctive Case Of The Oregon Spotted Frog (Rana Pretiosa) And The Invasive American Bullfrog (Rana (Aquarana) Catesbeiana), Kyle Scott Tidwell

Dissertations and Theses

The decline of the Oregon Spotted Frog (Rana pretiosa), a Pacific Northwest endemic now federally listed as threatened, has been attributed to several aspects of ecosystem alteration, primarily habitat degradation and loss. The introduced American Bullfrog (Rana (Aquarana) catesbeiana) has been widely implicated in those declines, but the basis of that contention has been difficult to characterize. The bullfrog occurring at every site of recent Oregon Spotted Frog extirpation has focused concern about its impact.

Here, I present a suite of interconnected studies that examine the behavioral ecology of both species to better understand the potential …


Complex Interactive Effects Of Water Mold, Herbicide, And The Fungus Batrachochytrium Dendrobatidis On Pacific Treefrog Hyliola Regilla Hosts, John M. Romansic, James E. Johnson, R. Steven Wagner, Rebecca H. Hill, Christopher A. Gaulke, Vance T. Vredenburg, Andrew R. Blaustein Mar 2017

Complex Interactive Effects Of Water Mold, Herbicide, And The Fungus Batrachochytrium Dendrobatidis On Pacific Treefrog Hyliola Regilla Hosts, John M. Romansic, James E. Johnson, R. Steven Wagner, Rebecca H. Hill, Christopher A. Gaulke, Vance T. Vredenburg, Andrew R. Blaustein

Biology Faculty Scholarship

Infectious diseases pose a serious threat to global biodiversity. However, their ecological impacts are not independent of environmental conditions. For example, the pathogenic fungus Batrachochytrium dendrobatidis (Bd), which has contributed to population declines and extinctions in many amphibian species, interacts with several environmental factors to influence its hosts, but potential interactions with other pathogens and environmental contaminants are understudied. We examined the combined effects of Bd, a water mold (Achlya sp.), and the herbicide Roundup® Regular (hereafter, Roundup®) on larval Pacific treefrog Hyliola regilla hosts. We employed a 2 wk, fully factorial laboratory experiment with 3 …


Some Taxonomic Corrections To The Genus Tityus C. L. Koch, 1836 (Scorpiones: Buthidae) In Hispaniola, Greater Antilles, Rolando Teruel Mar 2017

Some Taxonomic Corrections To The Genus Tityus C. L. Koch, 1836 (Scorpiones: Buthidae) In Hispaniola, Greater Antilles, Rolando Teruel

Euscorpius

In the present paper, the taxonomic status of several Hispaniolan members of the genus Tityus C. L. Koch, 1966 is revised after examination of almost all primary types and abundant supplementary material. This resulted in six new synonymies, which involve both extant and fossil species. The extant taxa herein synonymized are Tityus anasilviae Armas et Abud, 2004 under Tityus ottenwalderi Armas, 1999, Tityus bahoruco Teruel et Armas, 2006 under Tityus crassimanus (Thorell, 1876), Tityus ebanoverde Armas, 1999 under Tityus elii Armas et Marcano, 1992, and Tityus septentrionalis Armas et Abud, 2004 under Tityus portoplatensis Armas et Marcano, 1992. The fossil …


Early Emergence And Seasonality Of The Red-Bellied Snake (Storeria Occipitomaculata) Along The Platte River In South-Central Nebraska, Usa, Simon P. Tye, Keith Geluso, Mary J. Harner Mar 2017

Early Emergence And Seasonality Of The Red-Bellied Snake (Storeria Occipitomaculata) Along The Platte River In South-Central Nebraska, Usa, Simon P. Tye, Keith Geluso, Mary J. Harner

Transactions of the Nebraska Academy of Sciences and Affiliated Societies

The Red-bellied Snake (Storeria occipitomaculata) primarily inhabits moist woodlands of eastern North America, with two disjunct populations occurring in the Great Plains, one of which is in south-central Nebraska. This species is listed as at-risk in Nebraska, in part, due to being uncommon with limited information available about the ecology and natural history of this isolated population. We amassed 48 observations of Red-bellied Snakes in Nebraska from museum specimens and published accounts, including our observations and others reported to us published herein. The previous earliest documented date of spring emergence was 6 April from a specimen collected in …


Inhibition Of Listeria Monocytogenes On Ready-To-Eat Meats Using Bacteriocin Mixtures Based On Mode-Of-Action, Paul Priyesh Vijayakumar, Peter M. Muriana Mar 2017

Inhibition Of Listeria Monocytogenes On Ready-To-Eat Meats Using Bacteriocin Mixtures Based On Mode-Of-Action, Paul Priyesh Vijayakumar, Peter M. Muriana

Animal and Food Sciences Faculty Publications

Bacteriocin-producing (Bac+) lactic acid bacteria (LAB) comprising selected strains of Lactobacillus curvatus, Lactococcus lactis, Pediococcus acidilactici, and Enterococcus faecium and thailandicus were examined for inhibition of Listeria monocytogenes during hotdog challenge studies. The Bac+ strains, or their cell-free supernatants (CFS), were grouped according to mode-of-action (MOA) as determined from prior studies. Making a mixture of as many MOAs as possible is a practical way to obtain a potent natural antimicrobial mixture to address L. monocytogenes contamination of RTE meat products (i.e., hotdogs). The heat resistance of the bacteriocins allowed the use of pasteurization to …


Transcriptome Approach For Identifying Potential Biomarkers For Endocrine Disruption Due To Crude Oil Exposure Using Killifish (Fundulus Heteroclitus)., Frank J. Zadlock Iv Mar 2017

Transcriptome Approach For Identifying Potential Biomarkers For Endocrine Disruption Due To Crude Oil Exposure Using Killifish (Fundulus Heteroclitus)., Frank J. Zadlock Iv

Seton Hall University Dissertations and Theses (ETDs)

The killifish, Fundulus heteroclitus, is a common fish model in aquatic toxicology. However, little is known in this organism about how endocrine disrupting compounds, (EDCs) including polycyclic aromatic hydrocarbons (PAHs), impact the reproductive status from a molecular standpoint. The objective of this project is to apply high throughput sequencing to F. heteroclitus testes to examine the molecular mechanisms that impair reproduction when exposed to crude oil. First, a crude oil exposure experiment was conducted. Following exposure, semi-quantitative PCR was performed to detect changes in gene expression of the following genes known to respond to EDCs: gonadal aromatase (CYP19a), vitellogenin …


P24. The Birds And The Beats: Perception Of A Beat In An Avian Model, Brendon Samuels Mar 2017

P24. The Birds And The Beats: Perception Of A Beat In An Avian Model, Brendon Samuels

Western Research Forum

Background: Beat perception is a complex cognitive skill that enables humans to “feel” the beat in music, and is an essential component of synchronization of behavior and dance. The mechanisms in the human brain that facilitate beat perception are not entirely understood, and have only been studied thus far using non-invasive techniques. Some animals, such as songbirds, also seem to be able to detect a beat in rhythms, though this has never been formally tested independent of motor synchronization.

Methods: An operant experiment is used to assess if European starlings, a type of songbird, are capable of categorizing …


The Impact Of Various Predator Perceptions On Stress Response And Spatial Memory In Birds, Chlöe S. N. Carter Mar 2017

The Impact Of Various Predator Perceptions On Stress Response And Spatial Memory In Birds, Chlöe S. N. Carter

Western Research Forum

The Impact of Various Predator Perceptions on Stress Response and Spatial Memory in Birds

Background

This project will explore the impact of environmental stressors on the cognitive abilities of birds. Predator perception has been demonstrated to elicit a stress response by elevating stress hormones which can alter the behaviour of birds. The aim of this study is to observe if chronic stress from differently perceived threats of predation in an individual’s environment will lead to differences in the spatial memory abilities in two species of birds. I predict that chronic stress resulting from predator stimuli will impair the bird’s performance …


Edgar Lehr, March 10, 2017, Charlie Schlenker Mar 2017

Edgar Lehr, March 10, 2017, Charlie Schlenker

Interviews for WGLT

Charlie Schlenker from WGLT interviews IWU Professor of Biology Edgar Lehr. Lehr and his research partner Rudolf von May discovered a new species of frog, formally described as Pristimantis attenboroughi, during an expedition in the Peruvian Andes.

Photographs of Pristimantis attenboroughi can be found at the links below.