ORGANOHALOGENATED PERSISTENT ORGANIC POLLUTANTS IN AMERICAN EEL (ANGUILLA ROSTRATA) CAPTURED IN EASTERN CANADA
Recruitment of American eels (Anguilla rostrata) to Lake Ontario has declined rapidly over the past few decades. The commercial yellow eel fishery in Lake Ontario was closed in 2004 due to a lack of eel abundance. Researchers have been attempting to ascertain the reasons for the decline, although th...
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ftcanadathes:oai:collectionscanada.gc.ca:OKQ.1974/8036 2023-05-15T16:08:42+02:00 ORGANOHALOGENATED PERSISTENT ORGANIC POLLUTANTS IN AMERICAN EEL (ANGUILLA ROSTRATA) CAPTURED IN EASTERN CANADA Byer, Jonathan D Queen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.)) 2013-05-23 09:27:59.593 http://hdl.handle.net/1974/8036 en eng Canadian theses http://hdl.handle.net/1974/8036 This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner. persistent organic pollutants mass spectrometry American eel gas chromatography Thesis 2013 ftcanadathes 2013-12-22T00:49:10Z Recruitment of American eels (Anguilla rostrata) to Lake Ontario has declined rapidly over the past few decades. The commercial yellow eel fishery in Lake Ontario was closed in 2004 due to a lack of eel abundance. Researchers have been attempting to ascertain the reasons for the decline, although thus far, without definitive answers. In this thesis, the question of chemical contamination is addressed as it relates to female eel spawner quality. Spatial concentration trends of halogenated persistent organic pollutants (POPs) are described in eels collected from across eastern Canada, as well as temporal concentration trends in eels collected from a historically important area of northeastern Lake Ontario, Canada. Chlorinated POPs in eels, namely, organochlorinated pesticides, polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins and dibenzofurans are all significantly less than historic values which peaked in the 1960-70s. Measured concentrations of chlorinated POPs in eels from Lake Ontario have decreased by up to 3-fold over the past three decades, and exceeded toxicity thresholds historically for surrogate species (European eel and lake trout). Thus, chlorinated POPs may have had an effect on spawner quality. Concentrations of legacy POPs in eels were dependent on their origin, with eels from highly urbanized and industrialized areas having significantly higher concentrations than eels captured in less developed regions. Similar trends were observed for polybrominated diphenyl ethers and chlorinated norbornene flame retardants. A number of emerging brominated compounds were also measured in these eels by non-target analysis including bromophenols, bromobenzenes, and bromoanisoles. This thesis demonstrates that eels are an ideal species to investigate local sources of pollution, and provide chemical data that may be used in the future, when more toxicity information is available for eels, to assess the health risks posed by accumulated chemical contaminants. Thesis (Ph.D, Chemistry) -- Queen's University, 2013-05-23 09:27:59.593 Thesis European eel Theses Canada/Thèses Canada (Library and Archives Canada) Canada |
institution |
Open Polar |
collection |
Theses Canada/Thèses Canada (Library and Archives Canada) |
op_collection_id |
ftcanadathes |
language |
English |
topic |
persistent organic pollutants mass spectrometry American eel gas chromatography |
spellingShingle |
persistent organic pollutants mass spectrometry American eel gas chromatography Byer, Jonathan D ORGANOHALOGENATED PERSISTENT ORGANIC POLLUTANTS IN AMERICAN EEL (ANGUILLA ROSTRATA) CAPTURED IN EASTERN CANADA |
topic_facet |
persistent organic pollutants mass spectrometry American eel gas chromatography |
description |
Recruitment of American eels (Anguilla rostrata) to Lake Ontario has declined rapidly over the past few decades. The commercial yellow eel fishery in Lake Ontario was closed in 2004 due to a lack of eel abundance. Researchers have been attempting to ascertain the reasons for the decline, although thus far, without definitive answers. In this thesis, the question of chemical contamination is addressed as it relates to female eel spawner quality. Spatial concentration trends of halogenated persistent organic pollutants (POPs) are described in eels collected from across eastern Canada, as well as temporal concentration trends in eels collected from a historically important area of northeastern Lake Ontario, Canada. Chlorinated POPs in eels, namely, organochlorinated pesticides, polychlorinated biphenyls, polychlorinated dibenzo-p-dioxins and dibenzofurans are all significantly less than historic values which peaked in the 1960-70s. Measured concentrations of chlorinated POPs in eels from Lake Ontario have decreased by up to 3-fold over the past three decades, and exceeded toxicity thresholds historically for surrogate species (European eel and lake trout). Thus, chlorinated POPs may have had an effect on spawner quality. Concentrations of legacy POPs in eels were dependent on their origin, with eels from highly urbanized and industrialized areas having significantly higher concentrations than eels captured in less developed regions. Similar trends were observed for polybrominated diphenyl ethers and chlorinated norbornene flame retardants. A number of emerging brominated compounds were also measured in these eels by non-target analysis including bromophenols, bromobenzenes, and bromoanisoles. This thesis demonstrates that eels are an ideal species to investigate local sources of pollution, and provide chemical data that may be used in the future, when more toxicity information is available for eels, to assess the health risks posed by accumulated chemical contaminants. Thesis (Ph.D, Chemistry) -- Queen's University, 2013-05-23 09:27:59.593 |
author2 |
Queen's University (Kingston, Ont.). Theses (Queen's University (Kingston, Ont.)) |
format |
Thesis |
author |
Byer, Jonathan D |
author_facet |
Byer, Jonathan D |
author_sort |
Byer, Jonathan D |
title |
ORGANOHALOGENATED PERSISTENT ORGANIC POLLUTANTS IN AMERICAN EEL (ANGUILLA ROSTRATA) CAPTURED IN EASTERN CANADA |
title_short |
ORGANOHALOGENATED PERSISTENT ORGANIC POLLUTANTS IN AMERICAN EEL (ANGUILLA ROSTRATA) CAPTURED IN EASTERN CANADA |
title_full |
ORGANOHALOGENATED PERSISTENT ORGANIC POLLUTANTS IN AMERICAN EEL (ANGUILLA ROSTRATA) CAPTURED IN EASTERN CANADA |
title_fullStr |
ORGANOHALOGENATED PERSISTENT ORGANIC POLLUTANTS IN AMERICAN EEL (ANGUILLA ROSTRATA) CAPTURED IN EASTERN CANADA |
title_full_unstemmed |
ORGANOHALOGENATED PERSISTENT ORGANIC POLLUTANTS IN AMERICAN EEL (ANGUILLA ROSTRATA) CAPTURED IN EASTERN CANADA |
title_sort |
organohalogenated persistent organic pollutants in american eel (anguilla rostrata) captured in eastern canada |
publishDate |
2013 |
url |
http://hdl.handle.net/1974/8036 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
European eel |
genre_facet |
European eel |
op_relation |
Canadian theses http://hdl.handle.net/1974/8036 |
op_rights |
This publication is made available by the authority of the copyright owner solely for the purpose of private study and research and may not be copied or reproduced except as permitted by the copyright laws without written authority from the copyright owner. |
_version_ |
1766404708464852992 |