A5055897507- Marine animal studies overview
- Aquaculture disease management and microbiota
- Immune Response and Inflammation
- Fish Ecology and Management Studies
- Physiological and biochemical adaptations
- Marine and fisheries research
- Environmental Toxicology and Ecotoxicology
- Animal Disease Management and Epidemiology
- Ruminant Nutrition and Digestive Physiology
- Environmental DNA in Biodiversity Studies
- Marine Bivalve and Aquaculture Studies
- Wildlife Ecology and Conservation
- Molecular Biology Techniques and Applications
- Identification and Quantification in Food
- Rangeland and Wildlife Management
- Arctic and Antarctic ice dynamics
- Turtle Biology and Conservation
- Microbial infections and disease research
- Toxic Organic Pollutants Impact
- Ecology and Vegetation Dynamics Studies
- Genetic and phenotypic traits in livestock
- Mycobacterium research and diagnosis
- Rabies epidemiology and control
- Veterinary Equine Medical Research
- Rangeland Management and Livestock Ecology
University of California, Davis
2010-2025
United States Geological Survey
2015-2025
Western Ecological Research Center
2011-2024
Eastern Ecological Science Center
2023
Emory and Henry College
2023
Clemson University
2016
United States Army Medical Research Institute of Infectious Diseases
2016
Alaka`ina Foundation
2016
West Texas A&M University
2013
West Virginia University
2013
Abstract M. ovipneumoniae is a respiratory pathogen that can cause mild to moderate pneumonia and reduced productivity in domestic lambs. However, studies on both natural experimental infection have reported highly variable clinical signs pathology. Here, we assessed the impact of administering upper tract (URT) or lower (LRT) two-month-old specific pathogen-free Lambs were inoculated with PBS (control) ceftiofur-treated nasal wash fluid obtained from sheep infection, monitored for eight...
Abstract Habitat disturbance from development, resource extraction, off‐road vehicle use, and energy development ranks highly among threats to desert systems worldwide. In the Mojave Desert, United States, these disturbances have promoted establishment of nonnative plants, so that native grasses forbs are now intermixed with, or been replaced by invasive, Mediterranean grasses. This shift in plant composition has altered food availability for Desert tortoises ( Gopherus agassizii ), a...
Abstract Gene transcription analysis for diagnosing or monitoring wildlife health requires the ability to distinguish pathophysiological change from natural variation. Herein, we describe methodology development of quantitative real‐time polymerase chain reaction (qPCR) assays measure differential transcript levels multiple immune function genes in sea otter ( Enhydra lutris ); otter‐specific qPCR primer sequences interest are defined. We establish a ‘reference’ range transcripts each gene...
First posted March 22, 2019 For additional information, contact: Director, Western Ecological Research CenterU.S. Geological Survey3020 State University DriveModoc Hall, Room 4004Sacramento, California 95819 The range of the southern sea otter (Enhydra lutris nereis) spans most central coast from Half Moon Bay to Gaviota. Some coastal areas within this are heavily developed and highly impacted by humans, while other wild largely pristine. Determining relative importance food resource...
Migrating adult Pacific salmon (Oncorhynchus spp.) are sensitive to warm water (>18 °C), with a range of consequences from decreased spawning success early mortality. We examined the proportion Yukon River Chinook (O. tshawytscha) exhibiting evidence heat stress assess potential that high temperatures contribute freshwater mortality in northern population. Water greater than 18 °C have occurred almost annually and correspond low population abundance since 1990s. Using gene transcription...
MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsTheme Sections 451:201-212 (2012) - DOI: https://doi.org/10.3354/meps09572 Variations of transcript profiles between sea otters Enhydra lutris from Prince William Sound, Alaska, and clinically normal reference A. K. Miles1,*, L. Bowen1,*, B. Ballachey2, J. Bodkin2, M. Murray3, Estes4, R. Keister1, Stott5 1US Geological...
First posted January 17, 2017 For additional information, contact: Director, Western Ecological Research CenterU.S. Geological Survey3020 State University Drive EastSacramento, California 95819http://www.werc.usgs.gov/ The re-colonization of the Santa Barbara channel by sea otters brings these ESA-listed marine mammals closer to active oil and gas production facilities, shipping lanes naturally occurring seeps. However, degree which may actually be affected human-caused spills or exposure...
ABSTRACT Chinook salmon (Oncorhynchus tshawytscha) declines are widespread and may be attributed, at least in part, to warming river temperatures. Water temperatures the Yukon River tributaries often exceed 18°C, a threshold commonly associated with heat stress elevated mortality Pacific salmon. Untangling complex web of direct indirect physiological effects on is difficult natural setting innumerable system challenges but necessary increase our understanding both lethal sublethal impacts...
Abstract Wildfires have been shown to impact terrestrial species over a range of temporal scales. Little is known, however, about the more subtle toxicological effects wildfires, particularly in downstream marine or downwind locations from wildfire perimeter. These down‐current may be just as substantial those within We used gene transcription technology, sensitive indicator immunological perturbation, study 2008 Basin Complex Fire on California coast sentinel species, sea otter ( Enhydra...
Abstract Sea otter ( Enhydra lutris ) populations in southwest Alaska declined substantially between about 1990 and the most recent set of surveys 2015. Here we report changes distribution abundance sea otters, covarying patterns reproduction, mortality, body size condition, diet foraging behavior, food availability, health profiles, exposure to environmental contaminants over this 25‐yr period. The population decline, which resulted densities on order 5% carrying capacity, ranged from Attu...
The pastoral industry of the Northern Territory faces a suite environmental and economic challenges associated with, inter alia, export markets, costs production, climate change, change in government policies, potential cattle diseases. A participatory planning process was adopted by industry’s principal representative body, Cattlemen’s Association to explore complexity extent possible impacts on industry, initiate conversations about anticipating futures. facilitated system dynamics model,...
Abstract Increasing risk of pathogen spillover coupled with overall declines in wildlife population abundance the Anthropocene make infectious disease a relevant concern for species conservation worldwide. While emerging molecular tools could improve our diagnostic capabilities and give insight into mechanisms underlying risk, they have rarely been applied practice. Here, employing previously reported gene transcription panel common immune markers to track physiological changes, we present...
Abstract Major histocompatibility complex (MHC) class II DRB genotypes were examined in two geographically isolated populations of California sea lions ( Zalophus californianus ) (Gulf and coastal Pacific Ocean). Genomic DNA from 227 was using eight sequence‐specific primer (SSP) pairs flanking the putative peptide‐binding site. A total 40 different Zaca‐DRB genotype configurations identified among individuals. Using SSP‐PCR, significant differences found between Gulf numbers sequences per...