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Predation success of declining long-snouted seahorse (Hippocampus guttulatus) population under habitat shifts

2025-08Artigo científico Acesso aberto
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datacite.subject.sdg14:Proteger a Vida Marinha
datacite.subject.sdg13:Ação Climática
datacite.subject.sdg15:Proteger a Vida Terrestre
dc.contributor.authorParreira, Filipe
dc.contributor.authorPalma, Jorge
dc.contributor.authorSantos, Rui
dc.contributor.authorMartínez-Crego, Begoña
dc.date.accessioned2026-04-15T08:29:47Z
dc.date.available2026-04-15T08:29:47Z
dc.date.issued2025-08
dc.description.abstractSeahorse populations are facing significant declines worldwide, often associated to illegal trade and habitat loss or fragmentation. Emergent habitat shifts towards invasive seaweeds, facilitated by global warming, can also be at play, having still unknown effects on seahorse ecology. Particularly, indirect impacts on seahorse populations via altered predation success remains largely unexplored. Here, we conducted mesocosm experiments to investigate differences in the prey capture success of the long-snouted seahorse (Hippocampus guttulatus) among native habitats (i.e. seagrass meadows and unvegetated sediments) and non-native Caulerpa prolifera meadows when offered different preys (amphipods and shrimps), at low or high prey availability, and under low or high habitat complexity. Great plasticity of H. guttulatus to all habitats was revealed, as habitat type did not significantly affect the capture success. Instead, capture success depends on prey identity and availability regardless of the habitat type, as well as on habitat complexity. Seahorse capture success was higher under high prey availability, as well as when predating on amphipods that were offered together with shrimps. High habitat complexity of both vegetated habitats enhanced by double the capture success, whereas an opposite effect of similar magnitude was found for more complex unvegetated habitats. This indicates that vegetation complexity, regardless their native or invasive nature, reduces prey awareness to predator, whereas small structures in unvegetated habitats provide refuge for preys but not seahorse camouflage. We found no evidence that shifts from native habitats to invasive C. prolifera negatively impact H. guttulatus capture success, but further research on other aspects of its feeding ecology is still necessary.eng
dc.description.sponsorshipDL57/2016/CP1361/CT0004
dc.identifier.doi10.1016/j.marenvres.2025.107247
dc.identifier.issn0141-1136
dc.identifier.urihttp://hdl.handle.net/10400.1/28674
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationFeeding ecology of declining seahorse populations of Ria Formosa lagoon
dc.relationAlgarve Centre for Marine Sciences
dc.relation.ispartofMarine Environmental Research
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectSeahorse
dc.subjectSeagrass
dc.subjectUnvegetated sediments
dc.subjectHabitat shift
dc.subjectPrey capture
dc.subjectInvasive species
dc.titlePredation success of declining long-snouted seahorse (Hippocampus guttulatus) population under habitat shiftseng
dc.typejournal article
dspace.entity.typePublication
oaire.awardNumber2022.11198.BD
oaire.awardNumberUIDB/04326/2020
oaire.awardTitleFeeding ecology of declining seahorse populations of Ria Formosa lagoon
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardURIhttp://hdl.handle.net/10400.1/27468
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.citation.startPage107247
oaire.citation.titleMarine Environmental Research
oaire.citation.volume209
oaire.fundingStreamOE
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameParreira
person.familyNamePalma
person.familyNameSantos
person.familyNameMartínez-Crego
person.givenNameFilipe
person.givenNameJorge
person.givenNameRui
person.givenNameBegoña
person.identifier42560
person.identifier.ciencia-id0213-723C-8560
person.identifier.ciencia-idCA1D-2BD3-AE28
person.identifier.ciencia-id9B18-444D-2244
person.identifier.ciencia-idEC1A-1DB1-B619
person.identifier.orcid0000-0002-6898-4742
person.identifier.orcid0000-0002-5790-3433
person.identifier.orcid0000-0002-7861-4366
person.identifier.orcid0000-0002-9051-6961
person.identifier.ridB-4168-2008
person.identifier.ridJ-4090-2013
person.identifier.scopus-author-id7101903881
person.identifier.scopus-author-id7201375018
person.identifier.scopus-author-id16304833800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublication48acb088-a557-43d2-8fdf-37735ce24bdb
relation.isAuthorOfPublication2b09799d-66a7-42b1-9641-1781e00fa9ab
relation.isAuthorOfPublication84487ca8-404a-4584-81f0-3662c340d712
relation.isAuthorOfPublication6586b036-21dc-43e3-82d6-cd79ecc06918
relation.isAuthorOfPublication.latestForDiscovery48acb088-a557-43d2-8fdf-37735ce24bdb
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