Factors involved in prey resource partitioning in the genus Artedidraco (Notothenioidei, Artedidraconidae) from the western Ross Sea
Antarctic plunderfishes are demersal species inhabiting the continental shelf of the Ross Sea, with sympatric distributions and similar morphology. Assuming these species are potential competitors for food, we aimed to quantify food overlap among them and to test the existence of factors involved in...
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Online Access: | http://hdl.handle.net/11568/772128 https://doi.org/10.1007/s10750-015-2206-4 |
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ftunivpisairis:oai:arpi.unipi.it:11568/772128 2023-11-12T04:03:38+01:00 Factors involved in prey resource partitioning in the genus Artedidraco (Notothenioidei, Artedidraconidae) from the western Ross Sea La Mesa, Mario Eastman, Joseph T. Riginella, Emilio CASTELLI, ALBERTO La Mesa, Mario Castelli, Alberto Eastman, Joseph T. Riginella, Emilio 2015 http://hdl.handle.net/11568/772128 https://doi.org/10.1007/s10750-015-2206-4 eng eng volume:761 issue:1 firstpage:249 lastpage:259 numberofpages:11 journal:HYDROBIOLOGIA http://hdl.handle.net/11568/772128 doi:10.1007/s10750-015-2206-4 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84944355279 www.wkap.nl/journalhome.htm/0018-8158 Antarctica Artedidraco Feeding habit Food partitioning Plunderfishe Aquatic Science info:eu-repo/semantics/article 2015 ftunivpisairis https://doi.org/10.1007/s10750-015-2206-4 2023-10-17T21:33:32Z Antarctic plunderfishes are demersal species inhabiting the continental shelf of the Ross Sea, with sympatric distributions and similar morphology. Assuming these species are potential competitors for food, we aimed to quantify food overlap among them and to test the existence of factors involved in prey resource partitioning. Dietary composition and feeding niche breadth were estimated through stomach contents analysis of some species of Artedidraco sampled in the western Ross Sea. The fish community consisted of a wide range of feeders, from specialists like A. glareobarbatus and A. shackletoni, which fed exclusively on epifaunal polychaetes, to generalists like A. loennbergi and A. skottsbergi, which fed on a variety of prey. Although all species relied exclusively on benthic prey, diet diversity and prey type largely differed from each other, both contributing to reduce prey overlap and food competition. In a few cases, relatively high food overlap was observed between species with different spatial distributions. Based on our data and on previous studies, prey resource partitioning in plunderfishes is therefore established through morphological and behavioural adaptations, either by differential development of sense organs and trophic structures or by different diet composition and spatial distribution within the shared benthic habitat. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea ARPI - Archivio della Ricerca dell'Università di Pisa Antarctic Ross Sea Hydrobiologia 761 1 249 259 |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
topic |
Antarctica Artedidraco Feeding habit Food partitioning Plunderfishe Aquatic Science |
spellingShingle |
Antarctica Artedidraco Feeding habit Food partitioning Plunderfishe Aquatic Science La Mesa, Mario Eastman, Joseph T. Riginella, Emilio CASTELLI, ALBERTO Factors involved in prey resource partitioning in the genus Artedidraco (Notothenioidei, Artedidraconidae) from the western Ross Sea |
topic_facet |
Antarctica Artedidraco Feeding habit Food partitioning Plunderfishe Aquatic Science |
description |
Antarctic plunderfishes are demersal species inhabiting the continental shelf of the Ross Sea, with sympatric distributions and similar morphology. Assuming these species are potential competitors for food, we aimed to quantify food overlap among them and to test the existence of factors involved in prey resource partitioning. Dietary composition and feeding niche breadth were estimated through stomach contents analysis of some species of Artedidraco sampled in the western Ross Sea. The fish community consisted of a wide range of feeders, from specialists like A. glareobarbatus and A. shackletoni, which fed exclusively on epifaunal polychaetes, to generalists like A. loennbergi and A. skottsbergi, which fed on a variety of prey. Although all species relied exclusively on benthic prey, diet diversity and prey type largely differed from each other, both contributing to reduce prey overlap and food competition. In a few cases, relatively high food overlap was observed between species with different spatial distributions. Based on our data and on previous studies, prey resource partitioning in plunderfishes is therefore established through morphological and behavioural adaptations, either by differential development of sense organs and trophic structures or by different diet composition and spatial distribution within the shared benthic habitat. |
author2 |
La Mesa, Mario Castelli, Alberto Eastman, Joseph T. Riginella, Emilio |
format |
Article in Journal/Newspaper |
author |
La Mesa, Mario Eastman, Joseph T. Riginella, Emilio CASTELLI, ALBERTO |
author_facet |
La Mesa, Mario Eastman, Joseph T. Riginella, Emilio CASTELLI, ALBERTO |
author_sort |
La Mesa, Mario |
title |
Factors involved in prey resource partitioning in the genus Artedidraco (Notothenioidei, Artedidraconidae) from the western Ross Sea |
title_short |
Factors involved in prey resource partitioning in the genus Artedidraco (Notothenioidei, Artedidraconidae) from the western Ross Sea |
title_full |
Factors involved in prey resource partitioning in the genus Artedidraco (Notothenioidei, Artedidraconidae) from the western Ross Sea |
title_fullStr |
Factors involved in prey resource partitioning in the genus Artedidraco (Notothenioidei, Artedidraconidae) from the western Ross Sea |
title_full_unstemmed |
Factors involved in prey resource partitioning in the genus Artedidraco (Notothenioidei, Artedidraconidae) from the western Ross Sea |
title_sort |
factors involved in prey resource partitioning in the genus artedidraco (notothenioidei, artedidraconidae) from the western ross sea |
publishDate |
2015 |
url |
http://hdl.handle.net/11568/772128 https://doi.org/10.1007/s10750-015-2206-4 |
geographic |
Antarctic Ross Sea |
geographic_facet |
Antarctic Ross Sea |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_relation |
volume:761 issue:1 firstpage:249 lastpage:259 numberofpages:11 journal:HYDROBIOLOGIA http://hdl.handle.net/11568/772128 doi:10.1007/s10750-015-2206-4 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84944355279 www.wkap.nl/journalhome.htm/0018-8158 |
op_doi |
https://doi.org/10.1007/s10750-015-2206-4 |
container_title |
Hydrobiologia |
container_volume |
761 |
container_issue |
1 |
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249 |
op_container_end_page |
259 |
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