Patterns of habitat partitioning for the portunid crab Ovalipes trimaculatus in costal Patagonian waters

Animals frequently face trade-offs between their requirements for maximizing growth and minimizing mortality risk. The partition of habitat use in foraging arenas and refuges as an answer to this trade-off has been evaluated in intertidal crabs but is poorly known in subtidal crabs. The subtidal cra...

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Autores principales: de la Barra, P., Botto, F., Iribarne, O., Narvarte, M.
Formato: JOUR
Materias:
Diet
Foraging arena
San Matías Gulf
Stable isotope analysis
Stomach content analysis
aquatic community
carnivore
coastal water
crab
diet
foraging behavior
habitat use
isotopic analysis
mortality risk
outcrop
partitioning
prey availability
trade-off
Atlantic Ocean
Patagonia
San Matias Gulf
Animalia
Crustacea
Decapoda (Crustacea)
Echinodermata
Mollusca
Ovalipes trimaculatus
Portunidae
Teleostei
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_02727714_v213_n_p92_delaBarra
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_02727714_v213_n_p92_delaBarra
record_format dspace
spelling todo:paper_02727714_v213_n_p92_delaBarra2023-10-03T15:15:20Z Patterns of habitat partitioning for the portunid crab Ovalipes trimaculatus in costal Patagonian waters de la Barra, P. Botto, F. Iribarne, O. Narvarte, M. Diet Foraging arena San Matías Gulf Stable isotope analysis Stomach content analysis aquatic community carnivore coastal water crab diet foraging behavior habitat use isotopic analysis mortality risk outcrop partitioning prey availability trade-off Atlantic Ocean Patagonia San Matias Gulf Animalia Crustacea Decapoda (Crustacea) Echinodermata Mollusca Ovalipes trimaculatus Portunidae Teleostei Animals frequently face trade-offs between their requirements for maximizing growth and minimizing mortality risk. The partition of habitat use in foraging arenas and refuges as an answer to this trade-off has been evaluated in intertidal crabs but is poorly known in subtidal crabs. The subtidal crab Ovalipes trimaculatus lives and is captured by artisanal fishermen on sandy bottoms of the San Matías Gulf (Lat 41 °S; Argentina). Whereas these bottoms are poor in potential prey, the nearby rocky outcrops are much richer with relatively high abundance of potential prey for the species. Hence, we investigated if crabs in this area are using rocky bottoms as a foraging arena. Stomach content and stable isotopes analysis show that none of the evaluated prey (small teleosts, echinoderms, mollusks and crustaceans) contributed to more than 10% of O. trimaculatus diet, however prey from hard bottoms jointly contributed to 50–80% of the diet. Thus, O. trimaculatus is a generalist carnivore that, despite inhabiting mainly open sandy bottoms, uses rocky outcrops habitats as a foraging arena, probably due to their higher prey availability. © 2018 Elsevier Ltd JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02727714_v213_n_p92_delaBarra
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Diet
Foraging arena
San Matías Gulf
Stable isotope analysis
Stomach content analysis
aquatic community
carnivore
coastal water
crab
diet
foraging behavior
habitat use
isotopic analysis
mortality risk
outcrop
partitioning
prey availability
trade-off
Atlantic Ocean
Patagonia
San Matias Gulf
Animalia
Crustacea
Decapoda (Crustacea)
Echinodermata
Mollusca
Ovalipes trimaculatus
Portunidae
Teleostei
spellingShingle Diet
Foraging arena
San Matías Gulf
Stable isotope analysis
Stomach content analysis
aquatic community
carnivore
coastal water
crab
diet
foraging behavior
habitat use
isotopic analysis
mortality risk
outcrop
partitioning
prey availability
trade-off
Atlantic Ocean
Patagonia
San Matias Gulf
Animalia
Crustacea
Decapoda (Crustacea)
Echinodermata
Mollusca
Ovalipes trimaculatus
Portunidae
Teleostei
de la Barra, P.
Botto, F.
Iribarne, O.
Narvarte, M.
Patterns of habitat partitioning for the portunid crab Ovalipes trimaculatus in costal Patagonian waters
topic_facet Diet
Foraging arena
San Matías Gulf
Stable isotope analysis
Stomach content analysis
aquatic community
carnivore
coastal water
crab
diet
foraging behavior
habitat use
isotopic analysis
mortality risk
outcrop
partitioning
prey availability
trade-off
Atlantic Ocean
Patagonia
San Matias Gulf
Animalia
Crustacea
Decapoda (Crustacea)
Echinodermata
Mollusca
Ovalipes trimaculatus
Portunidae
Teleostei
description Animals frequently face trade-offs between their requirements for maximizing growth and minimizing mortality risk. The partition of habitat use in foraging arenas and refuges as an answer to this trade-off has been evaluated in intertidal crabs but is poorly known in subtidal crabs. The subtidal crab Ovalipes trimaculatus lives and is captured by artisanal fishermen on sandy bottoms of the San Matías Gulf (Lat 41 °S; Argentina). Whereas these bottoms are poor in potential prey, the nearby rocky outcrops are much richer with relatively high abundance of potential prey for the species. Hence, we investigated if crabs in this area are using rocky bottoms as a foraging arena. Stomach content and stable isotopes analysis show that none of the evaluated prey (small teleosts, echinoderms, mollusks and crustaceans) contributed to more than 10% of O. trimaculatus diet, however prey from hard bottoms jointly contributed to 50–80% of the diet. Thus, O. trimaculatus is a generalist carnivore that, despite inhabiting mainly open sandy bottoms, uses rocky outcrops habitats as a foraging arena, probably due to their higher prey availability. © 2018 Elsevier Ltd
format JOUR
author de la Barra, P.
Botto, F.
Iribarne, O.
Narvarte, M.
author_facet de la Barra, P.
Botto, F.
Iribarne, O.
Narvarte, M.
author_sort de la Barra, P.
title Patterns of habitat partitioning for the portunid crab Ovalipes trimaculatus in costal Patagonian waters
title_short Patterns of habitat partitioning for the portunid crab Ovalipes trimaculatus in costal Patagonian waters
title_full Patterns of habitat partitioning for the portunid crab Ovalipes trimaculatus in costal Patagonian waters
title_fullStr Patterns of habitat partitioning for the portunid crab Ovalipes trimaculatus in costal Patagonian waters
title_full_unstemmed Patterns of habitat partitioning for the portunid crab Ovalipes trimaculatus in costal Patagonian waters
title_sort patterns of habitat partitioning for the portunid crab ovalipes trimaculatus in costal patagonian waters
url http://hdl.handle.net/20.500.12110/paper_02727714_v213_n_p92_delaBarra
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AT bottof patternsofhabitatpartitioningfortheportunidcrabovalipestrimaculatusincostalpatagonianwaters
AT iribarneo patternsofhabitatpartitioningfortheportunidcrabovalipestrimaculatusincostalpatagonianwaters
AT narvartem patternsofhabitatpartitioningfortheportunidcrabovalipestrimaculatusincostalpatagonianwaters
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