Growth of young-of-the-year salmonids in the Chena River, Alaska
Thesis (M.S.) University of Alaska Fairbanks, 1983 Growth of young-of-the-year Arctic grayling (Thvmallus arcticus), chinook salmon (Oncorhynchus tshawytscha) and round whitefish (Prosopium cylindraceum). was examined in the Chena River during 1981 and 1982. Each species exhibited a gradient of grow...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/7437 2023-05-15T14:31:21+02:00 Growth of young-of-the-year salmonids in the Chena River, Alaska Walker, Robert J. 1983-12 http://hdl.handle.net/11122/7437 en_US eng http://hdl.handle.net/11122/7437 Thesis 1983 ftunivalaska 2023-02-23T21:36:50Z Thesis (M.S.) University of Alaska Fairbanks, 1983 Growth of young-of-the-year Arctic grayling (Thvmallus arcticus), chinook salmon (Oncorhynchus tshawytscha) and round whitefish (Prosopium cylindraceum). was examined in the Chena River during 1981 and 1982. Each species exhibited a gradient of growth within the main river; faster growing fish were found downstream. Highest growth rates occurred in Badger Slough, a clearwater tributary that parallels the lower river. Fish condition followed a similar pattern; faster growing fish were heavier at a given size. Between year differences in environmental conditions affected the first appearance, distribution and growth of these species. Growth pattern was reflected on the scales of Arctic grayling. Faster growing fish had a greater number of circuli that were more widely spaced. For fish from the lower river and Badger Slough, the number of circuli formed by the end of the growing year was not significantly different between years. This characteristic may be used to identify Chena River Arctic grayling stocks. Thesis Arctic grayling Arctic Alaska University of Alaska: ScholarWorks@UA Arctic Fairbanks |
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Open Polar |
collection |
University of Alaska: ScholarWorks@UA |
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ftunivalaska |
language |
English |
description |
Thesis (M.S.) University of Alaska Fairbanks, 1983 Growth of young-of-the-year Arctic grayling (Thvmallus arcticus), chinook salmon (Oncorhynchus tshawytscha) and round whitefish (Prosopium cylindraceum). was examined in the Chena River during 1981 and 1982. Each species exhibited a gradient of growth within the main river; faster growing fish were found downstream. Highest growth rates occurred in Badger Slough, a clearwater tributary that parallels the lower river. Fish condition followed a similar pattern; faster growing fish were heavier at a given size. Between year differences in environmental conditions affected the first appearance, distribution and growth of these species. Growth pattern was reflected on the scales of Arctic grayling. Faster growing fish had a greater number of circuli that were more widely spaced. For fish from the lower river and Badger Slough, the number of circuli formed by the end of the growing year was not significantly different between years. This characteristic may be used to identify Chena River Arctic grayling stocks. |
format |
Thesis |
author |
Walker, Robert J. |
spellingShingle |
Walker, Robert J. Growth of young-of-the-year salmonids in the Chena River, Alaska |
author_facet |
Walker, Robert J. |
author_sort |
Walker, Robert J. |
title |
Growth of young-of-the-year salmonids in the Chena River, Alaska |
title_short |
Growth of young-of-the-year salmonids in the Chena River, Alaska |
title_full |
Growth of young-of-the-year salmonids in the Chena River, Alaska |
title_fullStr |
Growth of young-of-the-year salmonids in the Chena River, Alaska |
title_full_unstemmed |
Growth of young-of-the-year salmonids in the Chena River, Alaska |
title_sort |
growth of young-of-the-year salmonids in the chena river, alaska |
publishDate |
1983 |
url |
http://hdl.handle.net/11122/7437 |
geographic |
Arctic Fairbanks |
geographic_facet |
Arctic Fairbanks |
genre |
Arctic grayling Arctic Alaska |
genre_facet |
Arctic grayling Arctic Alaska |
op_relation |
http://hdl.handle.net/11122/7437 |
_version_ |
1766304999465287680 |