Metal concentrations (AS, CD, CR, PB, HG and SE) in Dolly Varden (Salvelinus malma) from the Aleutian Islands, Alaska:
Concerns about contaminants in fish have increased in recent years, especially in species consumed heavily in subsistence diets. Most studies of contaminants in Alaskan subsistence foods have focused on mainland Alaska not the Aleutian Islands. Several islands along the Aleutian Archipelago of Alask...
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ftrutgersuniv:oai:example.org:rutgers-lib:26294 2023-05-15T14:18:00+02:00 Metal concentrations (AS, CD, CR, PB, HG and SE) in Dolly Varden (Salvelinus malma) from the Aleutian Islands, Alaska: Jeitner, Christian, 1976- Jeitner, Christian, 1976- (author) Burger, Joanna (chair) Gochfeld, Michael (internal member) Cooper, Keith (internal member) Rutgers University Graduate School - New Brunswick 2009 viii, 95 p. : ill. electronic resource application/pdf http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051838 eng eng Rutgers University Electronic Theses and Dissertations Graduate School - New Brunswick Electronic Theses and Dissertations rucore19991600001 http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051838 Ecology and Evolution Dolly Varden (Fish)--Effect of metals on Dolly Varden (Fish)--Effect of pollution on Marine pollution--Alaska--Aleutian Islands Text theses 2009 ftrutgersuniv 2022-05-30T13:37:57Z Concerns about contaminants in fish have increased in recent years, especially in species consumed heavily in subsistence diets. Most studies of contaminants in Alaskan subsistence foods have focused on mainland Alaska not the Aleutian Islands. Several islands along the Aleutian Archipelago of Alaska have supported military bases which may be a source of pollution, and the proximity of the Aleutian chain to Eastern Asia may increase its susceptibility to atmospheric deposition of heavy metals. This study compares levels of arsenic, cadmium, chromium, lead, mercury and selenium in the egg, kidney, liver and muscle of Dolly Varden (Salvelinus malma) from Umnak, Adak, and Amchitka Islands in the Aleutian Chain of Alaska. I examined levels as a function of tissue, gender, collection site, and size. There were significant differences in the levels of metals as a function of tissue, with kidney having the highest levels of arsenic and cadmium, and kidney and liver having significantly higher levels of chromium and mercury than the other tissues examined. Selenium and arsenic in muscle and liver were highly correlated with both length and weight of fish. Arsenic and mercury in muscle were highly correlated with levels in liver, kidney and egg. There were few significant gender differences in metal concentrations, with females having higher levels of chromium in muscle and cadmium in kidney than males. However selenium in liver was higher in males than females. On Amchitka mean mercury levels were higher in both muscle (149 ppb; ng/g, wet weight) and liver (321 ppb) compared to fish from Adak and Umnak (muscle = 24 ppb and liver = 44 ppb). Dolly Varden collected from Cannikin Lake and Fox Lake on Amchitka were probably not sea run. This may explain the elevated mercury levels found in Dolly Varden from Amchitka Island. Landlocked Dolly Varden feed more heavily on smaller fish and fish eggs which places them at a higher trophic level than anadromous fish which primarily feed on amphipods. Selenium levels were highest in ... Thesis Archipelago Alaska Aleutian Islands RUcore - Rutgers University Community Repository Adak ENVELOPE(59.561,59.561,66.502,66.502) Amchitka ENVELOPE(178.878,178.878,51.567,51.567) Amchitka Island ENVELOPE(178.983,178.983,51.542,51.542) Fox Lake ENVELOPE(-94.803,-94.803,56.000,56.000) Varden ENVELOPE(7.656,7.656,62.534,62.534) |
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Open Polar |
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RUcore - Rutgers University Community Repository |
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ftrutgersuniv |
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English |
topic |
Ecology and Evolution Dolly Varden (Fish)--Effect of metals on Dolly Varden (Fish)--Effect of pollution on Marine pollution--Alaska--Aleutian Islands |
spellingShingle |
Ecology and Evolution Dolly Varden (Fish)--Effect of metals on Dolly Varden (Fish)--Effect of pollution on Marine pollution--Alaska--Aleutian Islands Jeitner, Christian, 1976- Metal concentrations (AS, CD, CR, PB, HG and SE) in Dolly Varden (Salvelinus malma) from the Aleutian Islands, Alaska: |
topic_facet |
Ecology and Evolution Dolly Varden (Fish)--Effect of metals on Dolly Varden (Fish)--Effect of pollution on Marine pollution--Alaska--Aleutian Islands |
description |
Concerns about contaminants in fish have increased in recent years, especially in species consumed heavily in subsistence diets. Most studies of contaminants in Alaskan subsistence foods have focused on mainland Alaska not the Aleutian Islands. Several islands along the Aleutian Archipelago of Alaska have supported military bases which may be a source of pollution, and the proximity of the Aleutian chain to Eastern Asia may increase its susceptibility to atmospheric deposition of heavy metals. This study compares levels of arsenic, cadmium, chromium, lead, mercury and selenium in the egg, kidney, liver and muscle of Dolly Varden (Salvelinus malma) from Umnak, Adak, and Amchitka Islands in the Aleutian Chain of Alaska. I examined levels as a function of tissue, gender, collection site, and size. There were significant differences in the levels of metals as a function of tissue, with kidney having the highest levels of arsenic and cadmium, and kidney and liver having significantly higher levels of chromium and mercury than the other tissues examined. Selenium and arsenic in muscle and liver were highly correlated with both length and weight of fish. Arsenic and mercury in muscle were highly correlated with levels in liver, kidney and egg. There were few significant gender differences in metal concentrations, with females having higher levels of chromium in muscle and cadmium in kidney than males. However selenium in liver was higher in males than females. On Amchitka mean mercury levels were higher in both muscle (149 ppb; ng/g, wet weight) and liver (321 ppb) compared to fish from Adak and Umnak (muscle = 24 ppb and liver = 44 ppb). Dolly Varden collected from Cannikin Lake and Fox Lake on Amchitka were probably not sea run. This may explain the elevated mercury levels found in Dolly Varden from Amchitka Island. Landlocked Dolly Varden feed more heavily on smaller fish and fish eggs which places them at a higher trophic level than anadromous fish which primarily feed on amphipods. Selenium levels were highest in ... |
author2 |
Jeitner, Christian, 1976- (author) Burger, Joanna (chair) Gochfeld, Michael (internal member) Cooper, Keith (internal member) Rutgers University Graduate School - New Brunswick |
format |
Thesis |
author |
Jeitner, Christian, 1976- |
author_facet |
Jeitner, Christian, 1976- |
author_sort |
Jeitner, Christian, 1976- |
title |
Metal concentrations (AS, CD, CR, PB, HG and SE) in Dolly Varden (Salvelinus malma) from the Aleutian Islands, Alaska: |
title_short |
Metal concentrations (AS, CD, CR, PB, HG and SE) in Dolly Varden (Salvelinus malma) from the Aleutian Islands, Alaska: |
title_full |
Metal concentrations (AS, CD, CR, PB, HG and SE) in Dolly Varden (Salvelinus malma) from the Aleutian Islands, Alaska: |
title_fullStr |
Metal concentrations (AS, CD, CR, PB, HG and SE) in Dolly Varden (Salvelinus malma) from the Aleutian Islands, Alaska: |
title_full_unstemmed |
Metal concentrations (AS, CD, CR, PB, HG and SE) in Dolly Varden (Salvelinus malma) from the Aleutian Islands, Alaska: |
title_sort |
metal concentrations (as, cd, cr, pb, hg and se) in dolly varden (salvelinus malma) from the aleutian islands, alaska: |
publishDate |
2009 |
url |
http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051838 |
long_lat |
ENVELOPE(59.561,59.561,66.502,66.502) ENVELOPE(178.878,178.878,51.567,51.567) ENVELOPE(178.983,178.983,51.542,51.542) ENVELOPE(-94.803,-94.803,56.000,56.000) ENVELOPE(7.656,7.656,62.534,62.534) |
geographic |
Adak Amchitka Amchitka Island Fox Lake Varden |
geographic_facet |
Adak Amchitka Amchitka Island Fox Lake Varden |
genre |
Archipelago Alaska Aleutian Islands |
genre_facet |
Archipelago Alaska Aleutian Islands |
op_relation |
Rutgers University Electronic Theses and Dissertations Graduate School - New Brunswick Electronic Theses and Dissertations rucore19991600001 http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051838 |
_version_ |
1766289781029863424 |