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dc.contributor.author
Roman, Jorge Martin

dc.contributor.author
Lopez Cazorla, Andrea Cecilia

dc.contributor.author
Barbini, Santiago Aldo

dc.date.available
2025-02-13T14:52:51Z
dc.date.issued
2024-12-10
dc.identifier.citation
Roman, Jorge Martin; Lopez Cazorla, Andrea Cecilia; Barbini, Santiago Aldo; Feeding habits of a small demersal fish: Longfinned dwarf sea bass, Dules auriga (Teleostei: Serranidae), from the Southwest Atlantic; Elsevier; Regional Studies in Marine Science; 77; 103717; 10-12-2024; 1-11
dc.identifier.issn
2352-4855
dc.identifier.uri
http://hdl.handle.net/11336/254307
dc.description.abstract
Dules auriga is a small, endemic and demersal species that occurs in the Southwest Atlantic Ocean (SWA). Knowledge of the trophic ecology of this species will be essential to understanding its role as predator in this marine region. The aim of this study was to determine the diet composition, feeding strategy, and trophic level of D. auriga in the coastal waters off Uruguay and northern Argentina (34° – 41°S). A total of 309 individuals ranging from 81 to 174 mm total length (TL) were analyzed. Dules auriga fed mainly on polychaetes (50.04 % prey-specific index of relative importance, %PSIRI), followed by amphipods (16.32 % PSIRI), brachyuran crabs (10.76 % PSIRI), and echinoderms (10.36 % PSIRI). Relationships between the number of prey and maturity stage, TL, region, and season were evaluated using a multiple hypothesis modeling approach. Echinoderms consumption was higher in the south region, whereas amphipods and polychaetes were higher in the north region. Brachyuran crabs were more consumed in the cold season. The consumption of echinoderms increased with increasing body size of D. auriga. On the other hand, the consumption of amphipods decreased with body size. Polychaetes were more preyed by mature individuals than immature individuals. The size of the brachyuran crabs consumed not increased with increasing body size of D. auriga, but it was registered a continued inclusion of narrow range size of this prey in the diet. The analysis of the feeding strategy indicates a specialization on polychaetes. The specific trophic level was 3.24, indicating that D. auriga is a secondary consumer. This comprehensive investigation enhances understanding of trophic dynamics of D. auriga, providing a foundation for future ecological investigations in the SWA.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier

dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DIETARY CHANGES
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FEEDING STRATEGY
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TROPHIC LEEL
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SERRANIDAE
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ARGENTINE SEA
dc.subject.classification
Ecología

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Ciencias Biológicas

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CIENCIAS NATURALES Y EXACTAS

dc.title
Feeding habits of a small demersal fish: Longfinned dwarf sea bass, Dules auriga (Teleostei: Serranidae), from the Southwest Atlantic
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-12-26T13:38:43Z
dc.journal.volume
77
dc.journal.number
103717
dc.journal.pagination
1-11
dc.journal.pais
Países Bajos

dc.description.fil
Fil: Roman, Jorge Martin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
dc.description.fil
Fil: Lopez Cazorla, Andrea Cecilia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Argentino de Oceanografía. Universidad Nacional del Sur. Instituto Argentino de Oceanografía; Argentina
dc.description.fil
Fil: Barbini, Santiago Aldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina
dc.journal.title
Regional Studies in Marine Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://linkinghub.elsevier.com/retrieve/pii/S2352485524003505
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.rsma.2024.103717
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