Trophic ecology of hairy conger Bassanago albescens in the Southwest Atlantic and its implications for the ecosystem-based fishery management
This study aimed to determine the diet composition and feeding strategies of thehairy conger eel Bassanago albescensin the Southwest Atlantic (35° S-45° S), from stomach con-tents analysis of 222 specimens. The diet consisted mainly of cephalopods, followed by isopods,amphipods, ophiuroids, brachyur...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Language: | English |
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Instituto Nacional de Investigación y Desarrollo Pesquero
2021
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| Online Access: | http://hdl.handle.net/20.500.11937/96611 |
| _version_ | 1848766178663596032 |
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| author | Blasina, Gabriela Izzo, Luciano De Wysiecki, Agustin Figueroa, Daniel |
| author_facet | Blasina, Gabriela Izzo, Luciano De Wysiecki, Agustin Figueroa, Daniel |
| author_sort | Blasina, Gabriela |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This study aimed to determine the diet composition and feeding strategies of thehairy conger eel Bassanago albescensin the Southwest Atlantic (35° S-45° S), from stomach con-tents analysis of 222 specimens. The diet consisted mainly of cephalopods, followed by isopods,amphipods, ophiuroids, brachyurous and polychaetes. Results showed significant differences in thecomposition of the diet between sexes, regions and size classes that were reflected in the changesin the foraging strategy. The consumption of squid Illex argentinusprogressively increased with agrowing predator size, where the largest individuals showed specialization in the consumption ofthis particular prey. We propose these dietary changes would be related to morphological limita-tions and abilities associated with the body size of B. albescens, with larger individuals havingaccess to larger prey. Our results help to understand the biology of a species that has a sympatricdistribution with two key species in the Argentine fisheries: hake Merluccius hubbsi and I. argenti-nus, with evidence of a strong trophic interaction between them. This new information on theresources involved would allow an optimization of the fisheries management under an ecosystem-based criterion. |
| first_indexed | 2025-11-14T11:47:01Z |
| format | Journal Article |
| id | curtin-20.500.11937-96611 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:47:01Z |
| publishDate | 2021 |
| publisher | Instituto Nacional de Investigación y Desarrollo Pesquero |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-966112025-01-24T05:06:42Z Trophic ecology of hairy conger Bassanago albescens in the Southwest Atlantic and its implications for the ecosystem-based fishery management Blasina, Gabriela Izzo, Luciano De Wysiecki, Agustin Figueroa, Daniel This study aimed to determine the diet composition and feeding strategies of thehairy conger eel Bassanago albescensin the Southwest Atlantic (35° S-45° S), from stomach con-tents analysis of 222 specimens. The diet consisted mainly of cephalopods, followed by isopods,amphipods, ophiuroids, brachyurous and polychaetes. Results showed significant differences in thecomposition of the diet between sexes, regions and size classes that were reflected in the changesin the foraging strategy. The consumption of squid Illex argentinusprogressively increased with agrowing predator size, where the largest individuals showed specialization in the consumption ofthis particular prey. We propose these dietary changes would be related to morphological limita-tions and abilities associated with the body size of B. albescens, with larger individuals havingaccess to larger prey. Our results help to understand the biology of a species that has a sympatricdistribution with two key species in the Argentine fisheries: hake Merluccius hubbsi and I. argenti-nus, with evidence of a strong trophic interaction between them. This new information on theresources involved would allow an optimization of the fisheries management under an ecosystem-based criterion. 2021 Journal Article http://hdl.handle.net/20.500.11937/96611 10.47193/mafis.3422021010605 English http://creativecommons.org/licenses/by-nc-sa/4.0/ Instituto Nacional de Investigación y Desarrollo Pesquero fulltext |
| spellingShingle | Blasina, Gabriela Izzo, Luciano De Wysiecki, Agustin Figueroa, Daniel Trophic ecology of hairy conger Bassanago albescens in the Southwest Atlantic and its implications for the ecosystem-based fishery management |
| title | Trophic ecology of hairy conger Bassanago albescens in the Southwest Atlantic and its implications for the ecosystem-based fishery management |
| title_full | Trophic ecology of hairy conger Bassanago albescens in the Southwest Atlantic and its implications for the ecosystem-based fishery management |
| title_fullStr | Trophic ecology of hairy conger Bassanago albescens in the Southwest Atlantic and its implications for the ecosystem-based fishery management |
| title_full_unstemmed | Trophic ecology of hairy conger Bassanago albescens in the Southwest Atlantic and its implications for the ecosystem-based fishery management |
| title_short | Trophic ecology of hairy conger Bassanago albescens in the Southwest Atlantic and its implications for the ecosystem-based fishery management |
| title_sort | trophic ecology of hairy conger bassanago albescens in the southwest atlantic and its implications for the ecosystem-based fishery management |
| url | http://hdl.handle.net/20.500.11937/96611 |