Proximate composition and energy value of demersal and pelagic prey species from Southwest Atlantic
This study describes the proximate composition (moisture, lipid, protein and ash content) and energetic value of 39 species (27 teleosts, 3 sharks, 7 rays and 2 squids) that are known as key prey or potential prey of top predators on the Patagonian continental shelf. Specimens were collected in the...
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ftconicet:oai:ri.conicet.gov.ar:11336/104321 2023-10-09T21:56:04+02:00 Proximate composition and energy value of demersal and pelagic prey species from Southwest Atlantic Eder, Elena Beatriz Lewis, Mirtha Noemi application/pdf http://hdl.handle.net/11336/104321 eng eng Inter-Research info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/abstracts/meps/v291/p43-52/ info:eu-repo/semantics/altIdentifier/doi/10.3354/meps291043 http://hdl.handle.net/11336/104321 Eder, Elena Beatriz; Lewis, Mirtha Noemi; Proximate composition and energy value of demersal and pelagic prey species from Southwest Atlantic; Inter-Research; Marine Ecology Progress Series; 291; 12-2005; 43-52 0171-8630 1616-1599 CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ NUTRITIONAL QUALITY ENERGETIC VALUE TELEOST ELASMOBRANCHES CEPHALOPODS SOUTHWEST ATLANTIC OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.3354/meps291043 2023-09-24T20:33:04Z This study describes the proximate composition (moisture, lipid, protein and ash content) and energetic value of 39 species (27 teleosts, 3 sharks, 7 rays and 2 squids) that are known as key prey or potential prey of top predators on the Patagonian continental shelf. Specimens were collected in the SW Atlantic Ocean in the area 39 to 51°S, 55 to 65°W. Fifty-two catches were performed at a depth range of 73 to 370 m: 27 catches in autumn and 25 in summer. A multivariate correspondence analysis showed an association between species identity and certain biochemical variables (main dimension = 83% of variance explained). Sharks and some demersal-pelagic teleosts were associated with lipids (9 to 18% wet mass). Teleosts constituted a higher source of protein (9–28% wet mass) than elasmobranches. Rays were nutritionally poor, with the lowest lipid contents (2 to 10%) and energy values (3 to 7 kJ g–1 wet mass), in agreement with the general biochemical characteristics of benthic fishes. Demersal-benthic and demersal-pelagic species did not change in their nutritional values with increasing size. However, demersal-benthic species increased seasonally in protein content from 11–16% in summer to 10–19% in autumn. The energetic value of teleosts from the SW Atlantic Ocean was not different from those of the Pacific or Indian Southern Ocean, but was higher than the energetic value of teleosts from the Northern Hemisphere. This study contributes to the understanding of the biochemical composition and energetic value of prey species over the seasons and their relevance as potential prey for top predators. Fil: Eder, Elena Beatriz. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina Fil: Lewis, Mirtha Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina Article in Journal/Newspaper Southern Ocean CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Southern Ocean Patagonia San Juan Pacific Indian Argentina Marine Ecology Progress Series 291 43 52 |
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Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
NUTRITIONAL QUALITY ENERGETIC VALUE TELEOST ELASMOBRANCHES CEPHALOPODS SOUTHWEST ATLANTIC OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
NUTRITIONAL QUALITY ENERGETIC VALUE TELEOST ELASMOBRANCHES CEPHALOPODS SOUTHWEST ATLANTIC OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Eder, Elena Beatriz Lewis, Mirtha Noemi Proximate composition and energy value of demersal and pelagic prey species from Southwest Atlantic |
topic_facet |
NUTRITIONAL QUALITY ENERGETIC VALUE TELEOST ELASMOBRANCHES CEPHALOPODS SOUTHWEST ATLANTIC OCEAN https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
This study describes the proximate composition (moisture, lipid, protein and ash content) and energetic value of 39 species (27 teleosts, 3 sharks, 7 rays and 2 squids) that are known as key prey or potential prey of top predators on the Patagonian continental shelf. Specimens were collected in the SW Atlantic Ocean in the area 39 to 51°S, 55 to 65°W. Fifty-two catches were performed at a depth range of 73 to 370 m: 27 catches in autumn and 25 in summer. A multivariate correspondence analysis showed an association between species identity and certain biochemical variables (main dimension = 83% of variance explained). Sharks and some demersal-pelagic teleosts were associated with lipids (9 to 18% wet mass). Teleosts constituted a higher source of protein (9–28% wet mass) than elasmobranches. Rays were nutritionally poor, with the lowest lipid contents (2 to 10%) and energy values (3 to 7 kJ g–1 wet mass), in agreement with the general biochemical characteristics of benthic fishes. Demersal-benthic and demersal-pelagic species did not change in their nutritional values with increasing size. However, demersal-benthic species increased seasonally in protein content from 11–16% in summer to 10–19% in autumn. The energetic value of teleosts from the SW Atlantic Ocean was not different from those of the Pacific or Indian Southern Ocean, but was higher than the energetic value of teleosts from the Northern Hemisphere. This study contributes to the understanding of the biochemical composition and energetic value of prey species over the seasons and their relevance as potential prey for top predators. Fil: Eder, Elena Beatriz. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina Fil: Lewis, Mirtha Noemi. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina |
format |
Article in Journal/Newspaper |
author |
Eder, Elena Beatriz Lewis, Mirtha Noemi |
author_facet |
Eder, Elena Beatriz Lewis, Mirtha Noemi |
author_sort |
Eder, Elena Beatriz |
title |
Proximate composition and energy value of demersal and pelagic prey species from Southwest Atlantic |
title_short |
Proximate composition and energy value of demersal and pelagic prey species from Southwest Atlantic |
title_full |
Proximate composition and energy value of demersal and pelagic prey species from Southwest Atlantic |
title_fullStr |
Proximate composition and energy value of demersal and pelagic prey species from Southwest Atlantic |
title_full_unstemmed |
Proximate composition and energy value of demersal and pelagic prey species from Southwest Atlantic |
title_sort |
proximate composition and energy value of demersal and pelagic prey species from southwest atlantic |
publisher |
Inter-Research |
url |
http://hdl.handle.net/11336/104321 |
geographic |
Southern Ocean Patagonia San Juan Pacific Indian Argentina |
geographic_facet |
Southern Ocean Patagonia San Juan Pacific Indian Argentina |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://www.int-res.com/abstracts/meps/v291/p43-52/ info:eu-repo/semantics/altIdentifier/doi/10.3354/meps291043 http://hdl.handle.net/11336/104321 Eder, Elena Beatriz; Lewis, Mirtha Noemi; Proximate composition and energy value of demersal and pelagic prey species from Southwest Atlantic; Inter-Research; Marine Ecology Progress Series; 291; 12-2005; 43-52 0171-8630 1616-1599 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.3354/meps291043 |
container_title |
Marine Ecology Progress Series |
container_volume |
291 |
container_start_page |
43 |
op_container_end_page |
52 |
_version_ |
1779320473077678080 |