Feeding habits of the velvet belly lanternshark Etmopterus spinax (Chondrichthyes : Etmopteridae) off the Algarve, southern Portugal
Etmopterus spinax is one of the most abundant predators of the upper continental slope off the Algarve (southern Portugal), where it is captured in large quantities in deep-water fisheries. The feeding habits of E. spinax off the Algarve were investigated through the analysis of stomach contents of...
Published in: | Journal of the Marine Biological Association of the United Kingdom |
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Language: | English |
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Marine Biological Association of the United Kingdom
2006
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Online Access: | http://hdl.handle.net/10400.1/8796 https://doi.org/10.1017/S0025315406013762 |
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ftunivalgarve:oai:sapientia.ualg.pt:10400.1/8796 2023-05-15T17:10:42+02:00 Feeding habits of the velvet belly lanternshark Etmopterus spinax (Chondrichthyes : Etmopteridae) off the Algarve, southern Portugal Neiva, J. Coelho, R. Erzini, Karim 2006 http://hdl.handle.net/10400.1/8796 https://doi.org/10.1017/S0025315406013762 eng eng Marine Biological Association of the United Kingdom WOS:000239370300024 0025-3154 AUT: KER00534; http://hdl.handle.net/10400.1/8796 doi:10.1017/S0025315406013762 restrictedAccess article 2006 ftunivalgarve https://doi.org/10.1017/S0025315406013762 2022-05-30T08:47:20Z Etmopterus spinax is one of the most abundant predators of the upper continental slope off the Algarve (southern Portugal), where it is captured in large quantities in deep-water fisheries. The feeding habits of E. spinax off the Algarve were investigated through the analysis of stomach contents of 376 individuals. Prey composition was described and maturity, sex and size related variations in the diet analysed. The overall diet of E. spinax suggested a fairly generalized benthopelagic foraging behaviour primarily tuned to pelagic macroplankton/microneckton, teleost fish and cephalopods. Sex and maturity related differences in the diet were not significant. Two main ontogenic diet shifts were observed at about 17 and 28 cm total length. Small and medium sized immature sharks had a diet dominated by eurybathic crustaceans, chiefly Meganyctiphanes norvegica and Pasiphaea sivado. Larger individuals consumed more teleosts and cephalopods, in part associated with scavenging as a new feeding strategy. With increasing shark size the diet diversified both in terms of resources exploited and prey size. Article in Journal/Newspaper Meganyctiphanes norvegica Universidade do Algarve: Sapienta Journal of the Marine Biological Association of the United Kingdom 86 4 835 841 |
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Open Polar |
collection |
Universidade do Algarve: Sapienta |
op_collection_id |
ftunivalgarve |
language |
English |
description |
Etmopterus spinax is one of the most abundant predators of the upper continental slope off the Algarve (southern Portugal), where it is captured in large quantities in deep-water fisheries. The feeding habits of E. spinax off the Algarve were investigated through the analysis of stomach contents of 376 individuals. Prey composition was described and maturity, sex and size related variations in the diet analysed. The overall diet of E. spinax suggested a fairly generalized benthopelagic foraging behaviour primarily tuned to pelagic macroplankton/microneckton, teleost fish and cephalopods. Sex and maturity related differences in the diet were not significant. Two main ontogenic diet shifts were observed at about 17 and 28 cm total length. Small and medium sized immature sharks had a diet dominated by eurybathic crustaceans, chiefly Meganyctiphanes norvegica and Pasiphaea sivado. Larger individuals consumed more teleosts and cephalopods, in part associated with scavenging as a new feeding strategy. With increasing shark size the diet diversified both in terms of resources exploited and prey size. |
format |
Article in Journal/Newspaper |
author |
Neiva, J. Coelho, R. Erzini, Karim |
spellingShingle |
Neiva, J. Coelho, R. Erzini, Karim Feeding habits of the velvet belly lanternshark Etmopterus spinax (Chondrichthyes : Etmopteridae) off the Algarve, southern Portugal |
author_facet |
Neiva, J. Coelho, R. Erzini, Karim |
author_sort |
Neiva, J. |
title |
Feeding habits of the velvet belly lanternshark Etmopterus spinax (Chondrichthyes : Etmopteridae) off the Algarve, southern Portugal |
title_short |
Feeding habits of the velvet belly lanternshark Etmopterus spinax (Chondrichthyes : Etmopteridae) off the Algarve, southern Portugal |
title_full |
Feeding habits of the velvet belly lanternshark Etmopterus spinax (Chondrichthyes : Etmopteridae) off the Algarve, southern Portugal |
title_fullStr |
Feeding habits of the velvet belly lanternshark Etmopterus spinax (Chondrichthyes : Etmopteridae) off the Algarve, southern Portugal |
title_full_unstemmed |
Feeding habits of the velvet belly lanternshark Etmopterus spinax (Chondrichthyes : Etmopteridae) off the Algarve, southern Portugal |
title_sort |
feeding habits of the velvet belly lanternshark etmopterus spinax (chondrichthyes : etmopteridae) off the algarve, southern portugal |
publisher |
Marine Biological Association of the United Kingdom |
publishDate |
2006 |
url |
http://hdl.handle.net/10400.1/8796 https://doi.org/10.1017/S0025315406013762 |
genre |
Meganyctiphanes norvegica |
genre_facet |
Meganyctiphanes norvegica |
op_relation |
WOS:000239370300024 0025-3154 AUT: KER00534; http://hdl.handle.net/10400.1/8796 doi:10.1017/S0025315406013762 |
op_rights |
restrictedAccess |
op_doi |
https://doi.org/10.1017/S0025315406013762 |
container_title |
Journal of the Marine Biological Association of the United Kingdom |
container_volume |
86 |
container_issue |
4 |
container_start_page |
835 |
op_container_end_page |
841 |
_version_ |
1766067354624589824 |