Cephalopod beak sections used to trace mercury levels throughout the life of cephalopods: The giant warty squid Moroteuthopsis longimana as a case study
Cephalopods represent an important pathway for mercury transfer through food-webs. Due to the general difficulties in capturing oceanic squid, beaks found in the diet of top predators can be used to study their life-cycles and ecological role. Using upper beaks of the giant warty squid Moroteuthopsi...
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Elsevier
2020
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Online Access: | http://nora.nerc.ac.uk/id/eprint/528024/ https://www.sciencedirect.com/science/article/pii/S0141113620302798 |
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ftnerc:oai:nora.nerc.ac.uk:528024 2023-05-15T18:25:23+02:00 Cephalopod beak sections used to trace mercury levels throughout the life of cephalopods: The giant warty squid Moroteuthopsis longimana as a case study Queirós, José P. Bustamante, Paco Cherel, Yves Coelho, João P. Seco, José Roberts, Jim Pereira, Eduarda Xavier, José C. 2020-10 http://nora.nerc.ac.uk/id/eprint/528024/ https://www.sciencedirect.com/science/article/pii/S0141113620302798 unknown Elsevier Queirós, José P.; Bustamante, Paco; Cherel, Yves; Coelho, João P.; Seco, José; Roberts, Jim; Pereira, Eduarda; Xavier, José C. orcid:0000-0002-9621-6660 . 2020 Cephalopod beak sections used to trace mercury levels throughout the life of cephalopods: The giant warty squid Moroteuthopsis longimana as a case study. Marine Environmental Research, 161, 105049. 7, pp. https://doi.org/10.1016/j.marenvres.2020.105049 <https://doi.org/10.1016/j.marenvres.2020.105049> Publication - Article PeerReviewed 2020 ftnerc https://doi.org/10.1016/j.marenvres.2020.105049 2023-02-04T19:50:51Z Cephalopods represent an important pathway for mercury transfer through food-webs. Due to the general difficulties in capturing oceanic squid, beaks found in the diet of top predators can be used to study their life-cycles and ecological role. Using upper beaks of the giant warty squid Moroteuthopsis longimana (major prey in the Southern Ocean), we describe a method to assess mercury concentrations along the life of cephalopods through the segmentary analysis of beak sections (i.e. rostrum's tip and subsections along the hood). Distinct total mercury concentrations in the different subsections support that beaks can be used to study mercury levels in different periods of cephalopods' life-cycle. Mercury values in the anterior (1.3–7.9 μg kg−1 dw) and posterior (7.8–12.5 μg kg−1 dw) subsections reflect juvenile and adult stages, respectively. Furthermore, these results confirm that mercury bioaccumulates continuously throughout the individuals' life, with adults doubling their mercury concentrations to juveniles. Article in Journal/Newspaper Southern Ocean Natural Environment Research Council: NERC Open Research Archive Southern Ocean Marine Environmental Research 161 105049 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
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ftnerc |
language |
unknown |
description |
Cephalopods represent an important pathway for mercury transfer through food-webs. Due to the general difficulties in capturing oceanic squid, beaks found in the diet of top predators can be used to study their life-cycles and ecological role. Using upper beaks of the giant warty squid Moroteuthopsis longimana (major prey in the Southern Ocean), we describe a method to assess mercury concentrations along the life of cephalopods through the segmentary analysis of beak sections (i.e. rostrum's tip and subsections along the hood). Distinct total mercury concentrations in the different subsections support that beaks can be used to study mercury levels in different periods of cephalopods' life-cycle. Mercury values in the anterior (1.3–7.9 μg kg−1 dw) and posterior (7.8–12.5 μg kg−1 dw) subsections reflect juvenile and adult stages, respectively. Furthermore, these results confirm that mercury bioaccumulates continuously throughout the individuals' life, with adults doubling their mercury concentrations to juveniles. |
format |
Article in Journal/Newspaper |
author |
Queirós, José P. Bustamante, Paco Cherel, Yves Coelho, João P. Seco, José Roberts, Jim Pereira, Eduarda Xavier, José C. |
spellingShingle |
Queirós, José P. Bustamante, Paco Cherel, Yves Coelho, João P. Seco, José Roberts, Jim Pereira, Eduarda Xavier, José C. Cephalopod beak sections used to trace mercury levels throughout the life of cephalopods: The giant warty squid Moroteuthopsis longimana as a case study |
author_facet |
Queirós, José P. Bustamante, Paco Cherel, Yves Coelho, João P. Seco, José Roberts, Jim Pereira, Eduarda Xavier, José C. |
author_sort |
Queirós, José P. |
title |
Cephalopod beak sections used to trace mercury levels throughout the life of cephalopods: The giant warty squid Moroteuthopsis longimana as a case study |
title_short |
Cephalopod beak sections used to trace mercury levels throughout the life of cephalopods: The giant warty squid Moroteuthopsis longimana as a case study |
title_full |
Cephalopod beak sections used to trace mercury levels throughout the life of cephalopods: The giant warty squid Moroteuthopsis longimana as a case study |
title_fullStr |
Cephalopod beak sections used to trace mercury levels throughout the life of cephalopods: The giant warty squid Moroteuthopsis longimana as a case study |
title_full_unstemmed |
Cephalopod beak sections used to trace mercury levels throughout the life of cephalopods: The giant warty squid Moroteuthopsis longimana as a case study |
title_sort |
cephalopod beak sections used to trace mercury levels throughout the life of cephalopods: the giant warty squid moroteuthopsis longimana as a case study |
publisher |
Elsevier |
publishDate |
2020 |
url |
http://nora.nerc.ac.uk/id/eprint/528024/ https://www.sciencedirect.com/science/article/pii/S0141113620302798 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
Queirós, José P.; Bustamante, Paco; Cherel, Yves; Coelho, João P.; Seco, José; Roberts, Jim; Pereira, Eduarda; Xavier, José C. orcid:0000-0002-9621-6660 . 2020 Cephalopod beak sections used to trace mercury levels throughout the life of cephalopods: The giant warty squid Moroteuthopsis longimana as a case study. Marine Environmental Research, 161, 105049. 7, pp. https://doi.org/10.1016/j.marenvres.2020.105049 <https://doi.org/10.1016/j.marenvres.2020.105049> |
op_doi |
https://doi.org/10.1016/j.marenvres.2020.105049 |
container_title |
Marine Environmental Research |
container_volume |
161 |
container_start_page |
105049 |
_version_ |
1766206817981956096 |