Trophic plasticity in the sea urchin Paracentrotus lividus, as a function of resource availability and habitat features

Factors controlling herbivory pressure are of central importance in shaping the sea-scape. In the Mediterranean, the sea urchin Paracentrotus lividus is considered as a keystone her-bivore in seagrass meadows and macroalgal communities. Here we explored the trophic behaviorof this sea urchin in a sh...

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Autores: Camps Castellà, Judith, Romero, Javier (Romero Martinengo), Prado Villegas, Patricia
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Recursos:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:dnet:recercat____::468526b0bd52e84fcd61d453e4dcc278
Acesso em linha:https://hdl.handle.net/2445/229500
Access Level:acceso abierto
Palavra-chave:Invertebrats marins
Ecologia marina
Algues marines
Eriçons de mar
Marine invertebrates
Marine ecology
Marine algae
Sea urchins
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spelling Trophic plasticity in the sea urchin Paracentrotus lividus, as a function of resource availability and habitat featuresCamps Castellà, JudithRomero, Javier (Romero Martinengo)Prado Villegas, PatriciaInvertebrats marinsEcologia marinaAlgues marinesEriçons de marMarine invertebratesMarine ecologyMarine algaeSea urchinsFactors controlling herbivory pressure are of central importance in shaping the sea-scape. In the Mediterranean, the sea urchin Paracentrotus lividus is considered as a keystone her-bivore in seagrass meadows and macroalgal communities. Here we explored the trophic behaviorof this sea urchin in a shallow seagrass habitat of Cymodocea nodosa mixed with Caulerpa prolifera> and interspersed with sandy areas in Alfacs Bay, Ebro Delta (NW Mediterranean). The seasonal pseudo-indigenous bryozoan Amathia verticillata is locally very abundant, and there is alsoan important population of pen shells Pinna nobilis, providing hard substrate and cover, thus being a unique environment for assessing sea urchin trophic behavior. To this end, we conductedan ensemble of food preference and foraging experiments and stomach content and stable isotopeanalyses. Our results showed that sea urchins strongly prefer A. verticillata over other localresources, and there was also an important presence of the bryozoan in stomach contents (ca.44%), coupled with green and decayed seagrass leaves. Stable isotope analyses revealed thatover the long term, ca. 65% of the diet of P. lividus was based on decayed seagrass leaves, followed by the bryozoan and green seagrass leaves (21.7 and 13.3%, respectively). The localavailability of P. nobilis provides a preferred substrate for sea urchins, which showed limitedforaging movements into the surrounding seagrass beds, particularly when A. verticillata wasattached to the pen shells. The apparently high contribution of animal and detrital food to P. lividus diet is unprecedented, and suggests an opportunistic feeding behavior in sea urchins in those habitats.Inter-Research2026202620202026info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersion15 p.application/pdfhttps://hdl.handle.net/2445/229500Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésReproducció del document publicat a: https://doi.org/10.3354/meps13235Marine Ecology Progress Series, 2020, vol. 637, p. 71-85https://doi.org/10.3354/meps13235(c) Inter-Research, 2020info:eu-repo/semantics/openAccessoai:dnet:recercat____::468526b0bd52e84fcd61d453e4dcc2782026-05-29T05:05:01Z
dc.title.none.fl_str_mv Trophic plasticity in the sea urchin Paracentrotus lividus, as a function of resource availability and habitat features
title Trophic plasticity in the sea urchin Paracentrotus lividus, as a function of resource availability and habitat features
spellingShingle Trophic plasticity in the sea urchin Paracentrotus lividus, as a function of resource availability and habitat features
Camps Castellà, Judith
Invertebrats marins
Ecologia marina
Algues marines
Eriçons de mar
Marine invertebrates
Marine ecology
Marine algae
Sea urchins
title_short Trophic plasticity in the sea urchin Paracentrotus lividus, as a function of resource availability and habitat features
title_full Trophic plasticity in the sea urchin Paracentrotus lividus, as a function of resource availability and habitat features
title_fullStr Trophic plasticity in the sea urchin Paracentrotus lividus, as a function of resource availability and habitat features
title_full_unstemmed Trophic plasticity in the sea urchin Paracentrotus lividus, as a function of resource availability and habitat features
title_sort Trophic plasticity in the sea urchin Paracentrotus lividus, as a function of resource availability and habitat features
dc.creator.none.fl_str_mv Camps Castellà, Judith
Romero, Javier (Romero Martinengo)
Prado Villegas, Patricia
author Camps Castellà, Judith
author_facet Camps Castellà, Judith
Romero, Javier (Romero Martinengo)
Prado Villegas, Patricia
author_role author
author2 Romero, Javier (Romero Martinengo)
Prado Villegas, Patricia
author2_role author
author
dc.subject.none.fl_str_mv Invertebrats marins
Ecologia marina
Algues marines
Eriçons de mar
Marine invertebrates
Marine ecology
Marine algae
Sea urchins
topic Invertebrats marins
Ecologia marina
Algues marines
Eriçons de mar
Marine invertebrates
Marine ecology
Marine algae
Sea urchins
description Factors controlling herbivory pressure are of central importance in shaping the sea-scape. In the Mediterranean, the sea urchin Paracentrotus lividus is considered as a keystone her-bivore in seagrass meadows and macroalgal communities. Here we explored the trophic behaviorof this sea urchin in a shallow seagrass habitat of Cymodocea nodosa mixed with Caulerpa prolifera> and interspersed with sandy areas in Alfacs Bay, Ebro Delta (NW Mediterranean). The seasonal pseudo-indigenous bryozoan Amathia verticillata is locally very abundant, and there is alsoan important population of pen shells Pinna nobilis, providing hard substrate and cover, thus being a unique environment for assessing sea urchin trophic behavior. To this end, we conductedan ensemble of food preference and foraging experiments and stomach content and stable isotopeanalyses. Our results showed that sea urchins strongly prefer A. verticillata over other localresources, and there was also an important presence of the bryozoan in stomach contents (ca.44%), coupled with green and decayed seagrass leaves. Stable isotope analyses revealed thatover the long term, ca. 65% of the diet of P. lividus was based on decayed seagrass leaves, followed by the bryozoan and green seagrass leaves (21.7 and 13.3%, respectively). The localavailability of P. nobilis provides a preferred substrate for sea urchins, which showed limitedforaging movements into the surrounding seagrass beds, particularly when A. verticillata wasattached to the pen shells. The apparently high contribution of animal and detrital food to P. lividus diet is unprecedented, and suggests an opportunistic feeding behavior in sea urchins in those habitats.
publishDate 2020
dc.date.none.fl_str_mv 2020
2026
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/229500
url https://hdl.handle.net/2445/229500
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.3354/meps13235
Marine Ecology Progress Series, 2020, vol. 637, p. 71-85
https://doi.org/10.3354/meps13235
dc.rights.none.fl_str_mv (c) Inter-Research, 2020
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Inter-Research, 2020
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 15 p.
application/pdf
dc.publisher.none.fl_str_mv Inter-Research
publisher.none.fl_str_mv Inter-Research
dc.source.none.fl_str_mv Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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