Determining the immune status of Steller sea lions (Eumetopias jubatus): an environmental agents of disease perspective
Dissertation (Ph.D.) University of Alaska Fairbanks, 2019 The integrity of the immune system is paramount for preserving overall health for many organisms. Investigating environmental and physiological factors that may be associated with alterations of the immune status in non-traditional sentinel s...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/10510 2023-05-15T18:49:04+02:00 Determining the immune status of Steller sea lions (Eumetopias jubatus): an environmental agents of disease perspective Kennedy, Stephanie Nichole O'Hara, Todd Ferrante, Andrea Kuhn, Thomas Trainor, Thomas Rea, Lorrie 2019-05 http://hdl.handle.net/11122/10510 en_US eng http://hdl.handle.net/11122/10510 Steller's sea lion immunology environment Dissertation phd 2019 ftunivalaska 2023-02-23T21:37:29Z Dissertation (Ph.D.) University of Alaska Fairbanks, 2019 The integrity of the immune system is paramount for preserving overall health for many organisms. Investigating environmental and physiological factors that may be associated with alterations of the immune status in non-traditional sentinel species, like the Steller sea lion (SSL), is a prominent undertaking in eco-immunology research. Changes to immune homeostasis likely impacts the health and survival of SSLs. Recent studies have reported that mercury concentrations in hair in 24 to 36% of newborn SSLs of the Western Aleutian Islands (WAI) exceed thresholds (>30 ppm) for potential adverse effects. Many of these individuals were from WAI rookeries that have historically experienced significant population declines with some slow to recover. Retrospective, and ongoing, analyses of mercury in lanugo coats (natal hair) from young pups of the WAI demonstrate in utero exposure to relatively high levels of mercury during late gestation. Therefore, this dissertation focuses on the notion that dietary acquired mercury could potentially alter immune response in SSLs, especially young pups, and may contribute to the lack of recovery from population declines. In order to gain an understanding of the potential for mercury to adversely affect the immune response of SSLs, selected aspects of immunity were measured (blood cell counts, haptoglobin, immunoglobulins, and cytokines) and investigated within the context of body condition, age, mercury exposure and regional population dynamics. In Chapter Two, the acute phase response protein, haptoglobin, was found to vary significantly with age and region. Individual SSL pups with greater concentrations of mercury had lower predicted concentrations of haptoglobin. In Chapter Three, a colorimetric protein A enzyme-linked immunosorbent assay was modified for enhancing accurate measurement of immunoglobulin concentrations in SSL serum. This improved methodology was then used in Chapter Four for comparing immunoglobulins in ... Doctoral or Postdoctoral Thesis Alaska Aleutian Islands University of Alaska: ScholarWorks@UA Fairbanks |
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University of Alaska: ScholarWorks@UA |
op_collection_id |
ftunivalaska |
language |
English |
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Steller's sea lion immunology environment |
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Steller's sea lion immunology environment Kennedy, Stephanie Nichole Determining the immune status of Steller sea lions (Eumetopias jubatus): an environmental agents of disease perspective |
topic_facet |
Steller's sea lion immunology environment |
description |
Dissertation (Ph.D.) University of Alaska Fairbanks, 2019 The integrity of the immune system is paramount for preserving overall health for many organisms. Investigating environmental and physiological factors that may be associated with alterations of the immune status in non-traditional sentinel species, like the Steller sea lion (SSL), is a prominent undertaking in eco-immunology research. Changes to immune homeostasis likely impacts the health and survival of SSLs. Recent studies have reported that mercury concentrations in hair in 24 to 36% of newborn SSLs of the Western Aleutian Islands (WAI) exceed thresholds (>30 ppm) for potential adverse effects. Many of these individuals were from WAI rookeries that have historically experienced significant population declines with some slow to recover. Retrospective, and ongoing, analyses of mercury in lanugo coats (natal hair) from young pups of the WAI demonstrate in utero exposure to relatively high levels of mercury during late gestation. Therefore, this dissertation focuses on the notion that dietary acquired mercury could potentially alter immune response in SSLs, especially young pups, and may contribute to the lack of recovery from population declines. In order to gain an understanding of the potential for mercury to adversely affect the immune response of SSLs, selected aspects of immunity were measured (blood cell counts, haptoglobin, immunoglobulins, and cytokines) and investigated within the context of body condition, age, mercury exposure and regional population dynamics. In Chapter Two, the acute phase response protein, haptoglobin, was found to vary significantly with age and region. Individual SSL pups with greater concentrations of mercury had lower predicted concentrations of haptoglobin. In Chapter Three, a colorimetric protein A enzyme-linked immunosorbent assay was modified for enhancing accurate measurement of immunoglobulin concentrations in SSL serum. This improved methodology was then used in Chapter Four for comparing immunoglobulins in ... |
author2 |
O'Hara, Todd Ferrante, Andrea Kuhn, Thomas Trainor, Thomas Rea, Lorrie |
format |
Doctoral or Postdoctoral Thesis |
author |
Kennedy, Stephanie Nichole |
author_facet |
Kennedy, Stephanie Nichole |
author_sort |
Kennedy, Stephanie Nichole |
title |
Determining the immune status of Steller sea lions (Eumetopias jubatus): an environmental agents of disease perspective |
title_short |
Determining the immune status of Steller sea lions (Eumetopias jubatus): an environmental agents of disease perspective |
title_full |
Determining the immune status of Steller sea lions (Eumetopias jubatus): an environmental agents of disease perspective |
title_fullStr |
Determining the immune status of Steller sea lions (Eumetopias jubatus): an environmental agents of disease perspective |
title_full_unstemmed |
Determining the immune status of Steller sea lions (Eumetopias jubatus): an environmental agents of disease perspective |
title_sort |
determining the immune status of steller sea lions (eumetopias jubatus): an environmental agents of disease perspective |
publishDate |
2019 |
url |
http://hdl.handle.net/11122/10510 |
geographic |
Fairbanks |
geographic_facet |
Fairbanks |
genre |
Alaska Aleutian Islands |
genre_facet |
Alaska Aleutian Islands |
op_relation |
http://hdl.handle.net/11122/10510 |
_version_ |
1766242504918695936 |