The foraging ecology of an oceanic squid, Todarodes filippovae : The use of signature lipid profiling to monitor ecosystem change
Signature lipid/fatty acid and stomach content analyses were used in combination to examine the feeding ecology of Todarodes filippovae , an abundant oceanic squid with a broad circumpolar distribution in continental slope waters in the Southern Ocean. Both techniques show a diet that is closely lin...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Online Access: | https://doi.org/10.1016/j.dsr2.2012.07.025 http://ecite.utas.edu.au/85181 |
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ftunivtasecite:oai:ecite.utas.edu.au:85181 2023-05-15T18:25:07+02:00 The foraging ecology of an oceanic squid, Todarodes filippovae : The use of signature lipid profiling to monitor ecosystem change Pethybridge, HR Nichols, PD Virtue, P Jackson, GD 2013 https://doi.org/10.1016/j.dsr2.2012.07.025 http://ecite.utas.edu.au/85181 en eng Pergamon-Elsevier Science Ltd http://dx.doi.org/10.1016/j.dsr2.2012.07.025 Pethybridge, HR and Nichols, PD and Virtue, P and Jackson, GD, The foraging ecology of an oceanic squid, Todarodes filippovae : The use of signature lipid profiling to monitor ecosystem change, Deep-Sea Research Part II, 95 pp. 119-128. ISSN 0967-0645 (2013) [Refereed Article] http://ecite.utas.edu.au/85181 Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Refereed Article PeerReviewed 2013 ftunivtasecite https://doi.org/10.1016/j.dsr2.2012.07.025 2019-12-13T21:49:30Z Signature lipid/fatty acid and stomach content analyses were used in combination to examine the feeding ecology of Todarodes filippovae , an abundant oceanic squid with a broad circumpolar distribution in continental slope waters in the Southern Ocean. Both techniques show a diet that is closely linked to prey availability and abundance, with some specialisation occurring for Myctophid fishes which dominated the diet numerically and taxonomically. Mean monthly differences in total lipid content of the digestive gland correlated with satellite-derived sea surface chlorophyll, illustrating that the diet is closely linked to short-term (monthly) temporal changes of primary productivity. Multidimensional scaling analysis of prey and T. filippovae signature fatty acid profiles revealed apparent intra-specific predator to prey relationships. Significant season versus site interactions for various lipid classes and fatty acids were observed, further indicating that temporal dietary shifts are related to site-specific oceanography and ecosystem structure (prey composition and/or productivity). Comparing fatty acid profiles with other Southern Ocean squid species, interspecific similarities and differences in diet composition were evident. Results demonstrate that signature lipid profiling of squid can be used as a complimentary or even alternative and cost effective tool to examine key changes in prey-community structure and ecosystem productivity. Such knowledge is fundamental to better understanding the effects of environmental perturbations from fisheries, climate change and pollution. Article in Journal/Newspaper Southern Ocean eCite UTAS (University of Tasmania) Southern Ocean Deep Sea Research Part II: Topical Studies in Oceanography 95 119 128 |
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Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Pethybridge, HR Nichols, PD Virtue, P Jackson, GD The foraging ecology of an oceanic squid, Todarodes filippovae : The use of signature lipid profiling to monitor ecosystem change |
topic_facet |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
description |
Signature lipid/fatty acid and stomach content analyses were used in combination to examine the feeding ecology of Todarodes filippovae , an abundant oceanic squid with a broad circumpolar distribution in continental slope waters in the Southern Ocean. Both techniques show a diet that is closely linked to prey availability and abundance, with some specialisation occurring for Myctophid fishes which dominated the diet numerically and taxonomically. Mean monthly differences in total lipid content of the digestive gland correlated with satellite-derived sea surface chlorophyll, illustrating that the diet is closely linked to short-term (monthly) temporal changes of primary productivity. Multidimensional scaling analysis of prey and T. filippovae signature fatty acid profiles revealed apparent intra-specific predator to prey relationships. Significant season versus site interactions for various lipid classes and fatty acids were observed, further indicating that temporal dietary shifts are related to site-specific oceanography and ecosystem structure (prey composition and/or productivity). Comparing fatty acid profiles with other Southern Ocean squid species, interspecific similarities and differences in diet composition were evident. Results demonstrate that signature lipid profiling of squid can be used as a complimentary or even alternative and cost effective tool to examine key changes in prey-community structure and ecosystem productivity. Such knowledge is fundamental to better understanding the effects of environmental perturbations from fisheries, climate change and pollution. |
format |
Article in Journal/Newspaper |
author |
Pethybridge, HR Nichols, PD Virtue, P Jackson, GD |
author_facet |
Pethybridge, HR Nichols, PD Virtue, P Jackson, GD |
author_sort |
Pethybridge, HR |
title |
The foraging ecology of an oceanic squid, Todarodes filippovae : The use of signature lipid profiling to monitor ecosystem change |
title_short |
The foraging ecology of an oceanic squid, Todarodes filippovae : The use of signature lipid profiling to monitor ecosystem change |
title_full |
The foraging ecology of an oceanic squid, Todarodes filippovae : The use of signature lipid profiling to monitor ecosystem change |
title_fullStr |
The foraging ecology of an oceanic squid, Todarodes filippovae : The use of signature lipid profiling to monitor ecosystem change |
title_full_unstemmed |
The foraging ecology of an oceanic squid, Todarodes filippovae : The use of signature lipid profiling to monitor ecosystem change |
title_sort |
foraging ecology of an oceanic squid, todarodes filippovae : the use of signature lipid profiling to monitor ecosystem change |
publisher |
Pergamon-Elsevier Science Ltd |
publishDate |
2013 |
url |
https://doi.org/10.1016/j.dsr2.2012.07.025 http://ecite.utas.edu.au/85181 |
geographic |
Southern Ocean |
geographic_facet |
Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
http://dx.doi.org/10.1016/j.dsr2.2012.07.025 Pethybridge, HR and Nichols, PD and Virtue, P and Jackson, GD, The foraging ecology of an oceanic squid, Todarodes filippovae : The use of signature lipid profiling to monitor ecosystem change, Deep-Sea Research Part II, 95 pp. 119-128. ISSN 0967-0645 (2013) [Refereed Article] http://ecite.utas.edu.au/85181 |
op_doi |
https://doi.org/10.1016/j.dsr2.2012.07.025 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
95 |
container_start_page |
119 |
op_container_end_page |
128 |
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1766206334651334656 |