Assessing the physiological status of northern fur seal populations in North America using fecal hormones ...

The core breeding population of northern fur seals (Callorhinus ursinus) in North America has declined significantly since the 1980s on St. Paul Island (one of the Pribilof Islands) while the smaller nearby population at Bogoslof Island (eastern Bering Sea) has increased exponentially. Further south...

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Main Author: Atwood, Elizabeth Marie
Format: Text
Language:English
Published: University of British Columbia 2012
Subjects:
Online Access:https://dx.doi.org/10.14288/1.0105190
https://doi.library.ubc.ca/10.14288/1.0105190
id ftdatacite:10.14288/1.0105190
record_format openpolar
spelling ftdatacite:10.14288/1.0105190 2023-08-27T04:08:45+02:00 Assessing the physiological status of northern fur seal populations in North America using fecal hormones ... Atwood, Elizabeth Marie 2012 https://dx.doi.org/10.14288/1.0105190 https://doi.library.ubc.ca/10.14288/1.0105190 en eng University of British Columbia Text article-journal ScholarlyArticle 2012 ftdatacite https://doi.org/10.14288/1.0105190 2023-08-07T14:24:23Z The core breeding population of northern fur seals (Callorhinus ursinus) in North America has declined significantly since the 1980s on St. Paul Island (one of the Pribilof Islands) while the smaller nearby population at Bogoslof Island (eastern Bering Sea) has increased exponentially. Further south, the population of northern fur seals on San Miguel Island off the coast of Southern California has fluctuated between exponential growth and catastrophic declines associated with re-occurring El Nino events. The goal of my thesis was to assess the physiological status of these three breeding populations of northern fur seals in North America to determine whether nutritional differences could explain the different population trajectories. I collected fecal samples (scats) in July 2009 from these three islands and measured the fecal metabolites of two hormones — a glucocorticoid associated with the stress response, and triiodothyronine (T3), a thyroid hormone associated with metabolic rate. I also assessed feeding ... Text Bering Sea Callorhinus ursinus Northern fur seal DataCite Metadata Store (German National Library of Science and Technology) Bering Sea San Miguel ENVELOPE(-57.467,-57.467,-63.650,-63.650)
institution Open Polar
collection DataCite Metadata Store (German National Library of Science and Technology)
op_collection_id ftdatacite
language English
description The core breeding population of northern fur seals (Callorhinus ursinus) in North America has declined significantly since the 1980s on St. Paul Island (one of the Pribilof Islands) while the smaller nearby population at Bogoslof Island (eastern Bering Sea) has increased exponentially. Further south, the population of northern fur seals on San Miguel Island off the coast of Southern California has fluctuated between exponential growth and catastrophic declines associated with re-occurring El Nino events. The goal of my thesis was to assess the physiological status of these three breeding populations of northern fur seals in North America to determine whether nutritional differences could explain the different population trajectories. I collected fecal samples (scats) in July 2009 from these three islands and measured the fecal metabolites of two hormones — a glucocorticoid associated with the stress response, and triiodothyronine (T3), a thyroid hormone associated with metabolic rate. I also assessed feeding ...
format Text
author Atwood, Elizabeth Marie
spellingShingle Atwood, Elizabeth Marie
Assessing the physiological status of northern fur seal populations in North America using fecal hormones ...
author_facet Atwood, Elizabeth Marie
author_sort Atwood, Elizabeth Marie
title Assessing the physiological status of northern fur seal populations in North America using fecal hormones ...
title_short Assessing the physiological status of northern fur seal populations in North America using fecal hormones ...
title_full Assessing the physiological status of northern fur seal populations in North America using fecal hormones ...
title_fullStr Assessing the physiological status of northern fur seal populations in North America using fecal hormones ...
title_full_unstemmed Assessing the physiological status of northern fur seal populations in North America using fecal hormones ...
title_sort assessing the physiological status of northern fur seal populations in north america using fecal hormones ...
publisher University of British Columbia
publishDate 2012
url https://dx.doi.org/10.14288/1.0105190
https://doi.library.ubc.ca/10.14288/1.0105190
long_lat ENVELOPE(-57.467,-57.467,-63.650,-63.650)
geographic Bering Sea
San Miguel
geographic_facet Bering Sea
San Miguel
genre Bering Sea
Callorhinus ursinus
Northern fur seal
genre_facet Bering Sea
Callorhinus ursinus
Northern fur seal
op_doi https://doi.org/10.14288/1.0105190
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