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Articles 8071 - 8100 of 21433
Full-Text Articles in Entire DC Network
Dairy Digest 2018: Home Is Where The Cows Are, South Dakota State University Dairy Club
Dairy Digest 2018: Home Is Where The Cows Are, South Dakota State University Dairy Club
Dairy Digest
This is the 2018 Dairy Digest published annually by the South Dakota State University Dairy Club. The Digest contains information and news about the activities and members of the SDSU Dairy Club for the academic year 2017 - 2018.
Ichthyology Field Notebooks Spreadsheet, Karisa Boyer
Ichthyology Field Notebooks Spreadsheet, Karisa Boyer
Ichthyology Collection
No abstract provided.
Blooming Mountains Of Biodiversity: An Investigation Of Angiosperms On Cerro Mayordomo, Tungurahua, Ecuador, Ella Matsuda
Blooming Mountains Of Biodiversity: An Investigation Of Angiosperms On Cerro Mayordomo, Tungurahua, Ecuador, Ella Matsuda
Independent Study Project (ISP) Collection
Ecuador is one of the most biodiverse places on the planet, and many of the species in the region are found nowhere else in the world. The cloud forest is particularly diverse because the mountainous terrain isolates populations and changes in elevation create a wide variety of habitats. Cerro Mayordomo is a relatively unexplored mountain in the cloud forest of Tungurahua, Ecuador. It is known to have very high levels of endemism and several new species have been discovered there, but the biodiversity of angiosperms on the mountain has never been quantified. In this study, 5x5 m quadrants were established …
Octopus Resource Of Western Australia Harvest Strategy 2018-2022. Version 1.0, Western Australia. Department Of Primary Industries And Regional Development
Octopus Resource Of Western Australia Harvest Strategy 2018-2022. Version 1.0, Western Australia. Department Of Primary Industries And Regional Development
Fisheries Management Papers
Harvest strategies for aquatic resources managed by the Western Australian (WA) Department of Primary Industries and Regional Development (DPIRD) are formal documents that are prepared based on a formal policy (Department of Fisheries 2015) to support the decision-making processes and ensure consistency with the principles of Ecologically Sustainable Development (ESD; Fletcher 2002) and Ecosystem Based Fisheries Management (EBFM; Fletcher et al. 2010). The objectives of ESD are reflected in the objects of the Fish Resources Management Act 1994 (FRMA), Section 3, and the Aquatic Resources Management Act (ARMA) 2016, Clause 9, which will replace the FRMA once enacted.
Octopus Resource Of Western Australia Harvest Strategy : 2018 – 2022 : Version 1.0, Department Of Fisheries
Octopus Resource Of Western Australia Harvest Strategy : 2018 – 2022 : Version 1.0, Department Of Fisheries
Fisheries Management Papers
No abstract provided.
Transcriptomic Response To Immune Challenge In Zebra Finch (Taeniopygia Guttata) Using Rna-Seq, Cassandra Scalf
Transcriptomic Response To Immune Challenge In Zebra Finch (Taeniopygia Guttata) Using Rna-Seq, Cassandra Scalf
Masters Theses & Specialist Projects
Despite the convergence of rapid technological advances in genomics and the maturing field of ecoimmunology, our understanding of the genes that regulate immunity in wild populations is still nascent. Previous work to assess immune function has relied upon relatively crude measures of immunocompetence. However, with next-generation RNA-sequencing, it is now possible to create a profile of gene expression in response to an immune challenge. In this study, captive zebra finch (Taeniopygia guttata; adult males) were challenged with bacterial lipopolysaccharide (2 mg/Kg BW; dissolved in 0.9% saline) or vehicle (0.9% saline) to stimulate the immune system. Two hours after injection, birds …
Wpa News 105 (2018), World Pheasant Association
Wpa News 105 (2018), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (Spring 2018), number 105
Published by the World Pheasant Association
Herpetofauna Of Sumak Allpa: A Baseline Assessment Of An Unstudied Island Herpetofaunal Community, Sara Freimuth
Herpetofauna Of Sumak Allpa: A Baseline Assessment Of An Unstudied Island Herpetofaunal Community, Sara Freimuth
Independent Study Project (ISP) Collection
Sumak Allpa is an island dedicated to the provision and protection of habitat for the conservation and rehabilitation of primates. As such, the island - a varzea ecosystem located in the Western Amazon of Ecuador, one of the most biodiverse and also most threatened regions in the world – consists of protected primary forest that is home not only to a variety of primates, but also to an even wider variety of other taxa, nearly all of which have gone unstudied on the island. The present investigation assessed two of those taxa, amphibians and reptiles, in order to establish a …
Assessing Trade-Offs In Large Marine Protected Areas, Tammy E. Davies, Graham Epstein, Stacy E. Aguilera, Cassandra M. Brooks, Michael Cox, Louisa S. Evans, Sara M. Maxwell, Mateja Nenadovic, Natalie C. Ban
Assessing Trade-Offs In Large Marine Protected Areas, Tammy E. Davies, Graham Epstein, Stacy E. Aguilera, Cassandra M. Brooks, Michael Cox, Louisa S. Evans, Sara M. Maxwell, Mateja Nenadovic, Natalie C. Ban
Biological Sciences Faculty Publications
Large marine protected areas (LMPAs) are increasingly being established and have a high profile in marine conservation. LMPAs are expected to achieve multiple objectives, and because of their size are postulated to avoid trade-offs that are common in smaller MPAs. However, evaluations across multiple outcomes are lacking. We used a systematic approach to code several social and ecological outcomes of 12 LMPAs. We found evidence of three types of trade-offs: trade-offs between different ecological resources (supply trade-offs); trade-offs between ecological resource conditions and the well-being of resource users (supply-demand trade-offs); and trade-offs between the well-being outcomes of different resource users …
Compositional Changes In Two Small Mammal Communities During Succession In Southeastern Virginia, Robert K. Rose, Robyn M. Nadolny, Jay Kiser, Stephen E. Rice, Heather Green Salamone, Jana Eggleston, Holly D. Gaff
Compositional Changes In Two Small Mammal Communities During Succession In Southeastern Virginia, Robert K. Rose, Robyn M. Nadolny, Jay Kiser, Stephen E. Rice, Heather Green Salamone, Jana Eggleston, Holly D. Gaff
Virginia Journal of Science
Changes in the composition of two small mammal communities were studied during eight and nine years of ecological succession in southern Chesapeake, Virginia. Using monthly live-trapping on grids of similar size and history since their abandonment as agricultural fields, we learned that house mice were early colonists on one grid but not the other. Two species of herbivorous rodent and the granivorous eastern harvest mouse were numerically dominant on both grids across the study. Some species disappeared early on one grid but persisted to the end at the other. The two arboreal small mammals, golden and white-footed mice, were most …
In Vitro Assay Development As An Alternative To The Use Of Laboratory Animals For Measuring Clostridium Perfingens Type C Toxoid, Lauren M. Wilmes
In Vitro Assay Development As An Alternative To The Use Of Laboratory Animals For Measuring Clostridium Perfingens Type C Toxoid, Lauren M. Wilmes
School of Veterinary and Biomedical Sciences: Dissertations, Theses, and Student Research
Clostridium perfringens type C produces beta toxin, which is a primary virulence determinate that can cause necrotic enteritis in neonatal animals. Vaccines directed against C. perfringens toxins have shown to be efficacious in preventing disease. However, the production of a commercial vaccine requires not only an efficacious antigen, but also testing methods for quantifying antigens and potency on final product. This research was undertaken to fulfill a need for the reduction in small animal usage to produce and deliver vaccines. The current testing methods are performed in vivo according to the Code of Federal Regulations number 9 (9CFR) United …
Saving Species, One Individual At A Time: Zoo Veterinarians Between Welfare And Conservation, Irus Braverman
Saving Species, One Individual At A Time: Zoo Veterinarians Between Welfare And Conservation, Irus Braverman
Journal Articles
The role of zoo veterinarians has changed significantly in the last several decades, reflecting and revealing broader transformations in zoo culture, especially among North American accredited zoos. This article draws on several interviews with prominent zoo vets, as well as on regulations that pertain to their work, to highlight their current position at the nexus of animal health and welfare, on the one hand, and of species conservation, on the other hand. The transformation of zoos into conservation institutions in particular has resulted in the vets’ novel focus on the sustainability of populations and their intensified involvement in in situ …
Bird Population Changes Following The Establishment Of A Diverse Stand Of Woody Plants In A Former Crop Field In North Dakota, 1975– 2015, Lawrence D. Igl, Harold A. Kantrud, Wesley Newton
Bird Population Changes Following The Establishment Of A Diverse Stand Of Woody Plants In A Former Crop Field In North Dakota, 1975– 2015, Lawrence D. Igl, Harold A. Kantrud, Wesley Newton
United States Geological Survey, Northern Prairie Wildlife Research Center: Publications
Changes in the coverage of trees and shrubs on the North Dakota landscape since Euro- American settlement have likely had a pronounced impact on bird species that favor woody vegetation. Long- term data sets on breeding bird populations in wooded habitats in North Dakota or in the Great Plains are scarce. In 1975 a wildlife habitat plot was established in a 10.5 ha cropland field with a long history of small- grain production. Th e objective of this article is to evaluate the successional changes in bird populations as the habitat at this site became more biologically and structurally complex …
Efficacy Of Compound X (Bedoukian Research, Inc.) On Reducing Fecal Egg Count In Lambs, Mary M. France
Efficacy Of Compound X (Bedoukian Research, Inc.) On Reducing Fecal Egg Count In Lambs, Mary M. France
Honors Capstones
No abstract provided.
Construction Of A Pen-Scale Methane Collection System And Dietary Strategies For Methane Mitigation From Growing And Finishing Cattle, Thomas M. Winders
Construction Of A Pen-Scale Methane Collection System And Dietary Strategies For Methane Mitigation From Growing And Finishing Cattle, Thomas M. Winders
Department of Animal Science: Dissertations, Theses, and Student Research
Methane production from ruminants has been researched for many years because it has a global warming potential 25x that of carbon dioxide, meaning that mitigating smaller amounts of methane can have a large environmental impact. Research has focused on individual animal methane measurements, but the literature lack in industry-scale measurements. For that reason, the methane barn was built to evaluate dietary strategies on pens of cattle rather than on individual animals. In order to test the methane barn capabilities, an experiment designed to produce differences in methane production was conducted. Cattle received the same growing diet, at either ad-libitum access …
Prediction Factors For Release Of Wildlife At A Midwestern Rehabilitation Facility, Abigail E. Smith
Prediction Factors For Release Of Wildlife At A Midwestern Rehabilitation Facility, Abigail E. Smith
Undergraduate Honors Thesis Projects
Wildlife rehabilitation is a large and internationally known field with thousands of rehabilitators around the world. Resources, such as time and money, are extremely limited in rehabilitation facilities and not all animals are candidates for release due to injuries or illnesses that make them unlikely to survive in the wild. Understanding what factors predict release would be useful in focusing limited resources, but there has been little investigation previously. The purpose of this study is to determine what factors affect the survival of mammals and birds at an American Midwest wildlife rehabilitation center. It was found that animals admitted with …
Fishery Interaction Modeling Of Cetacean Bycatch In The California Drift Gillnet Fishery To Inform A Dynamic Ocean Management Tool, Nicholas B. Sisson
Fishery Interaction Modeling Of Cetacean Bycatch In The California Drift Gillnet Fishery To Inform A Dynamic Ocean Management Tool, Nicholas B. Sisson
Biological Sciences Theses & Dissertations
Understanding the drivers that lead to interaction between target species in a fishery and marine mammals is a critical aspect in efforts to reduce bycatch. In the California drift gillnet fishery static management approaches and gear changes have reduced bycatch but neither measure ascertains the underlying dynamics causing bycatch events. To avoid further potentially drastic measures such as hard caps, dynamic management approaches that consider the scales relevant to physical dynamics, animal movement and human use could be implemented. A key component to this approach is determining the factors that lead to fisheries interactions. Using 25 years (1990-2014) of National …
Using Unmanned Aerial Vehicle Technology To Enhance Conservation Biology Research, Ann Briggs
Using Unmanned Aerial Vehicle Technology To Enhance Conservation Biology Research, Ann Briggs
Honors Program: Senior Projects (Public)
This study examined the most effective ways to utilize unmanned aerial vehicles (UAV) for wildlife conservation. More specifically, a UAV platform was created that can perform multiple data collection tasks by utilizing interchangeable modules. The prototype produced in this study has the capability to perform many tasks through the use of interchangeable modules. These tasks include, but are not limited to aerial surveys and collection of biological samples. This innovative technology will provide invaluable assistance to conservation efforts by reducing research and subject injury or death while maximizing efficiency. The modular design of the prototype was developed for retail to …
Checklist Of The Avian Species Observed At The Gordon Natural Area (West Chester University, Pa) 2004-2018. Version Vii. Latest Observations From Ebird: 3/23/2018, Nur Ritter, Josh R. Auld
Checklist Of The Avian Species Observed At The Gordon Natural Area (West Chester University, Pa) 2004-2018. Version Vii. Latest Observations From Ebird: 3/23/2018, Nur Ritter, Josh R. Auld
Gordon Natural Area Bird Survey Documents
No abstract provided.
The Effect Of Hypoxia On The Nervous System Of Aplysia Californica, Victor Escalona, Lynne Annette Fieber, Joseph Serafy
The Effect Of Hypoxia On The Nervous System Of Aplysia Californica, Victor Escalona, Lynne Annette Fieber, Joseph Serafy
2018 Entries
The intertidal zone of California’s Pacific coast is home to the marine snail known as Aplysia californica, an organism that has found use as a model in experiments focused on understanding the basis of learning and memory. Its simple nervous system consisting of easily identifiable neurons, its life span of a year, and a readily-accessed aquacultured source from the National Resource for Aplysia make it an excellent model for ontogenetic, neural, and behavioral studies. Here, however, the focus was on strategies this species uses to survive in an environment rife with risks of hypoxia and desiccation during the tidal …
Uvb Avoidance In Dendrobates Azereus Tadpoles, Matthew Sturtevant, Lee Kats, Agustin Vargas, Arthur Garnica
Uvb Avoidance In Dendrobates Azereus Tadpoles, Matthew Sturtevant, Lee Kats, Agustin Vargas, Arthur Garnica
Seaver College Research And Scholarly Achievement Symposium
Most frogs are nocturnal, but dart frogs (Dendrobatidae) are diurnal and lack scales or hair that would protect them from UVB rays. Previous studies have demonstrated that adult dart frogs avoid UVB light. The purpose of this experiment was to test whether dart frog larvae would avoid UVB light when compared to local nocturnal treefrog larvae. For the experiment we used tadpoles of Dendrobates azureus and Pseudacris regilla. The tadpoles were put in tubs with a submerged shelter and exposed to 3 lighting conditions: UVB, no light and visible light. The tadpoles were exposed to only one lighting condition …
Whence And Whither: Acoustic Variability And Biogeography Of Tarsiers In North Sulawesi, Olivia Clare Kulander
Whence And Whither: Acoustic Variability And Biogeography Of Tarsiers In North Sulawesi, Olivia Clare Kulander
Dissertations and Theses
The morning duet calls of eastern tarsiers (Tarsius spp.) in North Sulawesi were recorded and analyzed to examine the effects of geography and geologic history on their call structure. Tarsius species exhibit interspecifically variable duet calls shown to correlate with species differentiation and distribution. They are distributed across Sulawesi, a biogeographically complex island in the Indonesian archipelago, where tectonic activity and multiple glaciations during the Pleistocene generated and modified barriers to their dispersal and gene flow.
Recordings were made at ten locations from November of 2012 through June of 2014. Two locations were categorized as mainland, while eight island …
Using Computer Algorithms To Elucidate Zebra Finch Reproductive Behaviour, Tanya T. Shoot, Sophie C. Edwards, Robert J. Martin, Susan D. Healy, David F. Sherry, Mark J. Daley
Using Computer Algorithms To Elucidate Zebra Finch Reproductive Behaviour, Tanya T. Shoot, Sophie C. Edwards, Robert J. Martin, Susan D. Healy, David F. Sherry, Mark J. Daley
Western Research Forum
Birds that experience variation in climatic conditions must maintain a stable nest temperature during incubation for successful hatching of offspring. Varying nest structure and incubation behaviour may be the methods birds use to regulate nest temperature. We used a modeling approach to investigate how birds adjust incubation behaviour to ambient temperature.
Hidden Markov Models (HMM) have been used previously to predict the spatial distribution of animals based on the models’ ability to classify movement behaviour. We used a HMM to predict zebra finch (Taeniopygia guttata) incubation behaviour and nest structure from a nest temperature data set. The full …
Killi-Data News (Winter), Tyrone Genade
Killi-Data News (Winter), Tyrone Genade
Killifish Research Review
Valued readers, it is with a heavy heart that I inform you that this is the last issue of Killi-Data News. The good news is that we will be back as Killifish Research Review. The dissolution of Killi-Data International created a prob- lem: how can the newsletter of a defunct organization live on without that organization? But other additional problems were building in the background. The first issue numbered 15 pages. The previous issue was 28 pages. The number of killifish related papers is increasing while time on our end (the editorial team) is running out. It takes a lot …
Killi-Data News (Fall), Tyrone Genade
Killi-Data News (Fall), Tyrone Genade
Killifish Research Review
Many interesting papers have been published over the last three months. The large volume of papers coupled with the start of the new college semester (and the workload it brings) delayed this issue of Killi-Data News. But better late than never—or so I hope! In this issue Richard van der Laan provides an insightful review of the recent Aphanius papers as to their taxonomic implications and questions. The systematic issues he raises show the importance of the Molecular project: we need to get more samples of the various cyprinodontiforme families to resolve unsettled systematic and taxonomic issues. In the Next …
Killi-Data News (Summer), Tyrone Genade
Killi-Data News (Summer), Tyrone Genade
Killifish Research Review
Over the last three months several interesting and exciting pa- pers have been published. By now most of you have heard the Nothobranchius fish poo news emanating from the Valenzano lab. That paper is reviewed and certainly has repercussions for the health of our captive fish. Polaçik et al have published interesting data with ramifications as to how we breed and incubate annual killifish. The big news in this issue is the paper from the Reznick lab which Jean Huber reviews. The contents of that paper goes to the heart of the question of just what a killifish is. The …
Killi-Data News (Spring), Tyrone Genade
Killi-Data News (Spring), Tyrone Genade
Killifish Research Review
This is the start of Killi-Data News’ second year. In this first issue of the year we have the usual review of research pub- lications as well as input from Martin Reichard on his lab’s Nothobranchius research. Martin is responding to my reviews of his lab’s work in the previous edition. I am serious about making sure the content in this newsletter is reliable but I erred in the previous edition and Martin has written extensively to correct my mistake in the section “Erratum”. This reply is welcomed and owed to readers. I must confess that I don’t know everything …
Killi-Data News (Winter), Tyrone Genade
Killi-Data News (Winter), Tyrone Genade
Killifish Research Review
This is the fourth edition, and concluding issue of the first volume, of Killi-Data News and I am happy that it has been well received by readers. At 25 pages this issue is a bit thin- ner than the last but this is because we agreed to make the cut-off for submissions the 1 st of December so we could get this edition out by the New Year. This is an exciting edition full of new species descrip- tions and analyses that will keep taxonomists busy for years to come. Costa has given us two molecular phylogenies on Melanorivulus as …
Killi-Data News (Spring), Tyrone Genade
Killi-Data News (Spring), Tyrone Genade
Killifish Research Review
This is the start of Killi-Data News’ second year. In this first issue of the year we have the usual review of research pub- lications as well as input from Martin Reichard on his lab’s Nothobranchius research. Martin is responding to my reviews of his lab’s work in the previous edition. I am serious about making sure the content in this newsletter is reliable but I erred in the previous edition and Martin has written extensively to correct my mistake in the section “Erratum”. This reply is welcomed and owed to readers. I must confess that I don’t know everything …
An Analysis Of The Characteristics And Practices Of Selected Florida Small Livestock Producers: A Focus On Production And Processing, Jannette R. Bartlett, David Nii O. Tackie, Dana Reid, Akua Adu-Gyamfi, Angela Mckenzie-Jakes
An Analysis Of The Characteristics And Practices Of Selected Florida Small Livestock Producers: A Focus On Production And Processing, Jannette R. Bartlett, David Nii O. Tackie, Dana Reid, Akua Adu-Gyamfi, Angela Mckenzie-Jakes
Professional Agricultural Workers Journal
The study assessed the characteristics and practices of small livestock producers, emphasizing production and processing. Data were obtained from a convenience sample of seventy small producers from selected counties in Florida, and analyzed using descriptive statistics, including chi-square tests. The socioeconomic characteristics showed that part-time producers, White producers, middle-aged producers, fairly educated producers, and moderate-income producers dominated the group. A majority of the producers practiced rotational grazing, fed a combination of forage and concentrate, and less than half conducted soil tests regularly. Moreover, over half had parasite problems and treated them primarily with anthelmintics. Nearly all producers sold animals live, …