Mercury concentrations of two toothfish and three of its prey species from the Pacific sector of the Antarctic
Abstract Muscle tissue samples were collected from Antarctic toothfish ( Dissostichus mawsoni Norman) and Patagonian toothfish ( D. eleginoides Smitt) in 1998 and from D. mawsoni and three of its prey species - Whitson's grenadier ( Macrourus whitsoni (Regan)), ice fish ( Chionobathyscus dewitt...
Published in: | Antarctic Science |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2011
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0954102011000654 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102011000654 |
id |
crcambridgeupr:10.1017/s0954102011000654 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0954102011000654 2024-03-03T08:38:10+00:00 Mercury concentrations of two toothfish and three of its prey species from the Pacific sector of the Antarctic Hanchet, Stuart M. Tracey, Dianne Dunn, Alistair Horn, Peter Smith, Neville 2011 http://dx.doi.org/10.1017/s0954102011000654 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102011000654 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 24, issue 1, page 34-42 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2011 crcambridgeupr https://doi.org/10.1017/s0954102011000654 2024-02-08T08:32:26Z Abstract Muscle tissue samples were collected from Antarctic toothfish ( Dissostichus mawsoni Norman) and Patagonian toothfish ( D. eleginoides Smitt) in 1998 and from D. mawsoni and three of its prey species - Whitson's grenadier ( Macrourus whitsoni (Regan)), ice fish ( Chionobathyscus dewitti Andriashev & Neyelov), and blue antimora ( Antimora rostrata (Günther)) - in 2006 to determine their mercury. Mercury levels were highly variable both within and between the five species studied but were positively correlated with fish length in four of the species. Once the factors length and year had been accounted for, the mercury levels in D. eleginoides were more than four times greater than in D. mawsoni . The low levels of mercury in D. mawsoni relative to its prey species and the four-fold difference in mercury concentrations between it and D. eleginoides were unexpected. Reasons for these different levels of bioaccumulation were explored including differences in diet, growth and longevity, and location. Differences in bioaccumulation between the two toothfish species could be explained partly through differences in their geographic distribution and differences in trophic position. However, the low levels of mercury in D. mawsoni relative to its prey species can only be explained by a lower rate of mercury assimilation and/or a higher rate of mercury elimination by D. mawsoni . Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctic Toothfish Patagonian Toothfish Cambridge University Press Antarctic The Antarctic Pacific Antarctic Science 24 1 34 42 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Hanchet, Stuart M. Tracey, Dianne Dunn, Alistair Horn, Peter Smith, Neville Mercury concentrations of two toothfish and three of its prey species from the Pacific sector of the Antarctic |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract Muscle tissue samples were collected from Antarctic toothfish ( Dissostichus mawsoni Norman) and Patagonian toothfish ( D. eleginoides Smitt) in 1998 and from D. mawsoni and three of its prey species - Whitson's grenadier ( Macrourus whitsoni (Regan)), ice fish ( Chionobathyscus dewitti Andriashev & Neyelov), and blue antimora ( Antimora rostrata (Günther)) - in 2006 to determine their mercury. Mercury levels were highly variable both within and between the five species studied but were positively correlated with fish length in four of the species. Once the factors length and year had been accounted for, the mercury levels in D. eleginoides were more than four times greater than in D. mawsoni . The low levels of mercury in D. mawsoni relative to its prey species and the four-fold difference in mercury concentrations between it and D. eleginoides were unexpected. Reasons for these different levels of bioaccumulation were explored including differences in diet, growth and longevity, and location. Differences in bioaccumulation between the two toothfish species could be explained partly through differences in their geographic distribution and differences in trophic position. However, the low levels of mercury in D. mawsoni relative to its prey species can only be explained by a lower rate of mercury assimilation and/or a higher rate of mercury elimination by D. mawsoni . |
format |
Article in Journal/Newspaper |
author |
Hanchet, Stuart M. Tracey, Dianne Dunn, Alistair Horn, Peter Smith, Neville |
author_facet |
Hanchet, Stuart M. Tracey, Dianne Dunn, Alistair Horn, Peter Smith, Neville |
author_sort |
Hanchet, Stuart M. |
title |
Mercury concentrations of two toothfish and three of its prey species from the Pacific sector of the Antarctic |
title_short |
Mercury concentrations of two toothfish and three of its prey species from the Pacific sector of the Antarctic |
title_full |
Mercury concentrations of two toothfish and three of its prey species from the Pacific sector of the Antarctic |
title_fullStr |
Mercury concentrations of two toothfish and three of its prey species from the Pacific sector of the Antarctic |
title_full_unstemmed |
Mercury concentrations of two toothfish and three of its prey species from the Pacific sector of the Antarctic |
title_sort |
mercury concentrations of two toothfish and three of its prey species from the pacific sector of the antarctic |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1017/s0954102011000654 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102011000654 |
geographic |
Antarctic The Antarctic Pacific |
geographic_facet |
Antarctic The Antarctic Pacific |
genre |
Antarc* Antarctic Antarctic Science Antarctic Toothfish Patagonian Toothfish |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctic Toothfish Patagonian Toothfish |
op_source |
Antarctic Science volume 24, issue 1, page 34-42 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102011000654 |
container_title |
Antarctic Science |
container_volume |
24 |
container_issue |
1 |
container_start_page |
34 |
op_container_end_page |
42 |
_version_ |
1792505078811197440 |