Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic
This study provides the first description of the feeding ecology of the smooth lanternshark Etmopterus pusillus based on stomach contents of specimens caught as bycatch in the Algarve (southern Portugal) with bottom trawling and bottom longline. The diet of E. pusillus consists mainly of fish (dry w...
Published in: | Scientia Marina |
---|---|
Main Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2012
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/18857/ http://www.icm.csic.es/scimar/index.php/secId/6/IdArt/4076/ |
id |
ftnerc:oai:nora.nerc.ac.uk:18857 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:18857 2023-05-15T17:41:26+02:00 Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic Xavier, José C. Vieira, Cátia Assis, Carlos Cherel, Yves Hill, Simeon Costa, Esmeralda Borges, Teresa C. Coelho, Rui 2012 http://nora.nerc.ac.uk/id/eprint/18857/ http://www.icm.csic.es/scimar/index.php/secId/6/IdArt/4076/ unknown Xavier, José C.; Vieira, Cátia; Assis, Carlos; Cherel, Yves; Hill, Simeon orcid:0000-0003-1441-8769 Costa, Esmeralda; Borges, Teresa C.; Coelho, Rui. 2012 Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic. Scientia Marina, 76 (2). 301-310. https://doi.org/10.3989/scimar.03540.07B <https://doi.org/10.3989/scimar.03540.07B> Publication - Article PeerReviewed 2012 ftnerc https://doi.org/10.3989/scimar.03540.07B 2023-02-04T19:31:59Z This study provides the first description of the feeding ecology of the smooth lanternshark Etmopterus pusillus based on stomach contents of specimens caught as bycatch in the Algarve (southern Portugal) with bottom trawling and bottom longline. The diet of E. pusillus consists mainly of fish (dry weight (% W)=87.1%; frequency of occurrence (%FO)=28.6%; number (%N)=30.3%), crustaceans (%W=7.7%; %FO=36.7%; %N=3.4%) and cephalopods (%W=4.7%; %FO=11.3%; %N=11.1%). The diet did not vary between sexes. Ontogenic changes were detected: crustaceans decreased in importance as the sharks increased in size and fish became dominant in the diet of adults. Combining two fishing methods provided broad information on the diet of E. pusillus, as bottom trawling caught smaller specimens and longlines caught larger individuals. E. pusillus feeds mainly on non-commercial species, and therefore does not compete directly with commercial fisheries. Finally, E. pusillus feeds in various parts of the water column and thus it can access a wide range of prey; however, this also means that it can be caught by both gears, making it more vulnerable in terms of conservation. Article in Journal/Newspaper Northeast Atlantic Natural Environment Research Council: NERC Open Research Archive Scientia Marina 76 2 301 310 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
description |
This study provides the first description of the feeding ecology of the smooth lanternshark Etmopterus pusillus based on stomach contents of specimens caught as bycatch in the Algarve (southern Portugal) with bottom trawling and bottom longline. The diet of E. pusillus consists mainly of fish (dry weight (% W)=87.1%; frequency of occurrence (%FO)=28.6%; number (%N)=30.3%), crustaceans (%W=7.7%; %FO=36.7%; %N=3.4%) and cephalopods (%W=4.7%; %FO=11.3%; %N=11.1%). The diet did not vary between sexes. Ontogenic changes were detected: crustaceans decreased in importance as the sharks increased in size and fish became dominant in the diet of adults. Combining two fishing methods provided broad information on the diet of E. pusillus, as bottom trawling caught smaller specimens and longlines caught larger individuals. E. pusillus feeds mainly on non-commercial species, and therefore does not compete directly with commercial fisheries. Finally, E. pusillus feeds in various parts of the water column and thus it can access a wide range of prey; however, this also means that it can be caught by both gears, making it more vulnerable in terms of conservation. |
format |
Article in Journal/Newspaper |
author |
Xavier, José C. Vieira, Cátia Assis, Carlos Cherel, Yves Hill, Simeon Costa, Esmeralda Borges, Teresa C. Coelho, Rui |
spellingShingle |
Xavier, José C. Vieira, Cátia Assis, Carlos Cherel, Yves Hill, Simeon Costa, Esmeralda Borges, Teresa C. Coelho, Rui Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
author_facet |
Xavier, José C. Vieira, Cátia Assis, Carlos Cherel, Yves Hill, Simeon Costa, Esmeralda Borges, Teresa C. Coelho, Rui |
author_sort |
Xavier, José C. |
title |
Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
title_short |
Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
title_full |
Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
title_fullStr |
Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
title_full_unstemmed |
Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic |
title_sort |
feeding ecology of the deep-sea lanternshark etmopterus pusillus (elasmobranchii: etmopteridae) in the northeast atlantic |
publishDate |
2012 |
url |
http://nora.nerc.ac.uk/id/eprint/18857/ http://www.icm.csic.es/scimar/index.php/secId/6/IdArt/4076/ |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_relation |
Xavier, José C.; Vieira, Cátia; Assis, Carlos; Cherel, Yves; Hill, Simeon orcid:0000-0003-1441-8769 Costa, Esmeralda; Borges, Teresa C.; Coelho, Rui. 2012 Feeding ecology of the deep-sea lanternshark Etmopterus pusillus (Elasmobranchii: Etmopteridae) in the northeast Atlantic. Scientia Marina, 76 (2). 301-310. https://doi.org/10.3989/scimar.03540.07B <https://doi.org/10.3989/scimar.03540.07B> |
op_doi |
https://doi.org/10.3989/scimar.03540.07B |
container_title |
Scientia Marina |
container_volume |
76 |
container_issue |
2 |
container_start_page |
301 |
op_container_end_page |
310 |
_version_ |
1766142979906469888 |