Download or read book Chemical Contaminants Pathogen Exposure and General Health Status of Live and Beach Cast Washington Sea Otters Enhydra Lutris Kenyoni written by U.s. Department of Commerce and published by CreateSpace. This book was released on 2014-01-31 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Analyses of blood and liver samples from live captured sea otters and liver samples from beachcast sea otter carcasses off the remote Washington coast indicate relatively low exposure to contaminants, but suggest that even at the low levels measured, exposure may be indicated by biomarker response. Evidence of pathogen exposure is noteworthy - infectious disease presents a potential risk to Washington sea otters, particularly due to their small population size and limited distribution.
Download or read book Chemical contaminants pathogen exposure and general health status of live and beach cast Washington sea otters Enhydra lutris kenyoni written by Mary Sue Brancato and published by . This book was released on 2009 with total page 181 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book CRC Handbook of Marine Mammal Medicine written by Frances M.D. Gulland and published by CRC Press. This book was released on 2018-03-20 with total page 2192 pages. Available in PDF, EPUB and Kindle. Book excerpt: AAP Prose Award Finalist 2018/19 For three decades, this book has been acknowledged as the most respected scientific reference specifically devoted to marine mammal medicine and health. Written by approximately 100 contributors who are recognized globally as leaders in their respective fields, the CRC Handbook of Marine Mammal Medicine, Third Edition continues to serve as the essential guide for all practitioners involved with marine mammals including veterinarians, technicians, biological researchers, students, managers, keepers, curators, and trainers. The 45 chapters provide essential information for the practitioner on pathology, infectious diseases, medical treatment, anesthesia, surgery, husbandry, health assessment, species-specific medicine, medically pertinent anatomy and physiology, and global health concerns such as strandings, oil spills, and entanglements of marine mammals. Covers all aspects of marine mammal veterinary practice Written by internationally acknowledged experts Adds new chapters on Ophthalmology, Dentistry, Ethics, Oil Spill Response, Health Assessments, Whale Entanglement Response, Dive Response, and Biotoxins Richly illustrated in color throughout the new edition including updated anatomical drawings and extensive photographs of ocular lesions Provides guidance to websites that regularly present updated information and images pertinent to current marine mammal medicine such as imaging and stranding network contacts Discusses ethics and animal welfare. The book guides the reader through the veterinary care of cetaceans, pinnipeds, manatees, sea otters, and polar bears. In addition to summaries of current knowledge, chapters provide information on those digital resources and websites which present the latest information as it emerges in the field. The CRC Handbook of Marine Mammal Medicine, Third Edition gives a call to action for scientists to experiment with new endeavors to engage and inspire current and future generations to care for marine mammals and the marine environment, and work together to find solutions. As the most trusted reference for marine mammal conservation medicine and for marine mammal medical facilities around the world, this book needs to be in your library.
Download or read book Emerging Infectious Diseases written by and published by . This book was released on 2014 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sea Otter Conservation written by Shawn Larson and published by Academic Press. This book was released on 2014-12-23 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sea otters are good indicators of ocean health. In addition, they are a keystone species, offering a stabilizing effect on ecosystem, controlling sea urchin populations that would otherwise inflict damage to kelp forest ecosystems. The kelp forest ecosystem is crucial for marine organisms and contains coastal erosion. With the concerns about the imperiled status of sea otter populations in California, Aleutian Archipelago and coastal areas of Russia and Japan, the last several years have shown growth of interest culturally and politically in the status and preservation of sea otter populations. Sea Otter Conservation brings together the vast knowledge of well-respected leaders in the field, offering insight into the more than 100 years of conservation and research that have resulted in recovery from near extinction. This publication assesses the issues influencing prospects for continued conservation and recovery of the sea otter populations and provides insight into how to handle future global changes. - Covers scientific, cultural, economic and political components of sea otter conservation - Provides guidance on how to manage threats to the sea otter populations in the face of future global changes - Highlights the effects that interactions of coastal animals have with the marine ecosystem
Download or read book Ecological and Evolutionary Aspects of Complex Relations between Micro and Macroparasites and their Wild Animal Hosts written by Serge Morand and published by Frontiers Media SA. This book was released on 2020-02-25 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Diet Composition and Fate of Contaminants in Subsistence Harvested Northern Sea Otters Enhydra Lutris Kenyoni from Icy Strait Alaska written by Kristin Lynn Brown and published by . This book was released on 2020 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Northern sea otters (Enhydra lutris kenyoni) in Southeast Alaska have experienced a significant population increase since their successful reintroduction to the area after previous near extirpation owing to historic fur trading. The purpose of this study was to examine sea otter diet and metals contamination in an area of Southeast Alaska with the most robust increases in sea otter numbers, Glacier Bay/Icy Strait, with the intent of gathering baseline data for a healthy population of sea otters and as a reflection of the local coastal environmental health of the area. This research was a collaborative effort with Alaska Native subsistence hunters and the Alaska Department of Environmental Conservation. In Chapter 1, sea otter stomachs (n=25) were obtained in April 2015 and April 2016 from Alaska Native subsistence hunters in Icy Strait, Alaska. There were no differences in sea otter diet between years. Bivalves dominated the sea otter diet. Northern horsemussels (Modiolus modiolus) made up the greatest proportion of the diet (0.46 ± 0.48). Fat gaper clams (Tresus capax) and northern horsemussels were found in the highest proportion of stomachs (0.64 and 0.60, respectively). There was not an apparent trend between sea otter age and the minimum number of total prey items, stomach contents mass, or mean frequency of occurrence of the top four prey species. Sea otters from this study are likely to be dietary generalists throughout their lives. In Chapter 2, brain, gonad, kidney, and liver tissues, as well as stomach contents were analyzed for arsenic, cadmium, copper, lead, total mercury, and selenium for the 2015-harvested sea otters that were also referenced in Chapter 1 (n=14). In general, arsenic and lead had the highest concentrations in stomach contents, cadmium and selenium were highest in the kidneys, and copper and total mercury were highest in the livers. While brains and gonads had the lowest metals concentrations of any tissue, the metal with the greatest concentration within the brain was copper, and within the gonads was selenium. Concentrations of arsenic, cadmium, total mercury, and lead demonstrated a relationship with sea otter length. In general, all the mean metals concentrations for these sea otters were below published effects threshold values for marine mammals. Only total mercury demonstrated biomagnification from the stomach contents (i.e., the prey) to all higher-level tissues. Selenium health benefit values were positive in all sea otter tissue types analyzed in the present study, indicating that concentrations of selenium had an overall health benefit in protecting those tissues against mercury toxicity. Evaluating how contaminants concentrate and get distributed in tissues of top trophic levels provides an indication for potential exposure to humans and demonstrates how these keystone species act as indicators of local coastal ecosystem health. The results of studies on dietary exposure and metals contamination in top trophic level consumers such as sea otters can be used in monitoring the health of sea otter populations and the local environment that they inhabit.
Download or read book Draft Revised Recovery Plan for the Southern Sea Otter Enhydra Lutris Nereis written by and published by . This book was released on 2000 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pesticide Contamination in Southern Sea Otters Enhydra Lutris Nereis written by Erin Michelle Dodd and published by . This book was released on 2008 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Ecotoxicological Comparison of Organic Contaminants in Sea Otters Enhydra Lutris Among Populations in California and Alaska written by Corinne Elizabeth Bacon and published by . This book was released on 1994 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Final Environmental Impact Statement for Translocation of Southern Sea Otters Technical support documents written by and published by . This book was released on 1987 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Baseline Health Juvenile Survival and a Rehabilitation Program for Southern Sea Otters Enhydra Lutris Nereis written by Krista Deanne Hanni and published by . This book was released on 2003 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Southern Sea Otter Recovery Plan written by and published by . This book was released on 1982 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization and Epidemiologic Investigation of Apicomplexan Parasites Associated with Meningoencephalitis in Southern Sea Otters Enhydra Lutris Nereis and Pacific Harbor Seals Phoca Vitulina Richardsi written by Melissa Ann Miller and published by . This book was released on 2002 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Evaluation of Herpesvirus Infection in Northern Sea Otters Enhydra Lutris Kenyoni written by Marion Tseng and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Northern Sea Otter Enhydra Lutris Kenyoni Along the Washington Coast written by Kristen Amy Walker and published by . This book was released on 2005 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrocarbons in Sea Otters Enhydra Lutris and Their Habitat in Coastal British Columbia Canada written by Katherine Anne Harris and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this work was to examine the source and fate of hydrocarbons, the primary constituents of oil, in sea otter (Enhydra lutris) habitat on the west coast of British Columbia (BC), Canada and their fate in the sea otter food web. Oil pollution is the primary threat to this recovering population, reflecting their extreme vulnerability as a result of several unique life history characteristics, including the absence of a blubber layer, reliance on their fur for insulation, and the fact that their entire lives can be spent at sea. While the vulnerability of sea otters to acute oil exposure has been demonstrated, chronic hydrocarbon exposure through dietary processes is not well understood. We measured hydrocarbon (alkane, hopane and sterane biomarker, and polycyclic aromatic) concentrations in sediments, prey items, and live-captured sea otters using high resolution gas chromatography/high resolution mass spectrometry (HRGC/HRMS). Background signatures were characterized for remote sediment sites, with polycyclic aromatic hydrocarbon (PAH) patterns revealing the predominance of petrogenic sources. However, PAH concentrations were up to three orders of magnitude higher at two small harbour sites, with patterns reflecting weathered petroleum and the combustion of fossil fuels and biomass. Concentrations at these sites exceeded both national and provincial sediment quality guidelines for the protection of aquatic life. Despite differences in habitat and feeding ecology, all sea otter prey species sampled exhibited PAH patterns dominated by petrogenic low molecular weight (LMW) compounds, highlighting the likely importance of water as an exposure route. While biota-sediment accumulation factors (BSAFs) generally decreased with increasing octanol-water partitioning coefficients (log Kow) for parent PAHs, BSAFs for alkyl PAHs increased, indicative of bioaccumulation by invertebrates. Biomagnification factors (BMFs) indicated that while parent PAHs biodiluted in sea otters, consistent with metabolic elimination, some higher alkylated 3- and 4-ring PAHs biomagnified, challenging the commonly held view that PAHs dilute in food webs. This retention was reflected in estimated?PAH body burdens, in which alkyl PAHs comprised 89? 7% and 84? 10% of totals in male and female otters, respectively. While vertebrates are efficient metabolizers of parent PAHs, this apparent retention of some alkyl PAHs in sea otters raises concerns about the potential toxicological effects of these poorly understood compounds. This research suggests that sea otters may be vulnerable to PAH-related health risks as a consequence of their large dietary requirements (~25% of body weight per day), even when prey PAH concentrations are low.
