Near-shore distribution of phyllosomas of the two only lobster species (Decapoda: Achelata) present in Robinson Crusoe Island and endemic to the Juan Fernandez archipelago

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dc.contributor.authorPalma, Alvaro T.
dc.contributor.authorCaceres Montenegro, Ismael
dc.contributor.authorBennett, Richard S.
dc.contributor.authorMagnolfi, Spartaco
dc.contributor.authorHenriquez, Luis A.
dc.contributor.authorGuerra, Jorge F.
dc.contributor.authorManriquez, Karen
dc.contributor.authorPalma, R. Eduardo
dc.date.accessioned2024-01-10T12:06:51Z
dc.date.available2024-01-10T12:06:51Z
dc.date.issued2011
dc.description.abstractTwo lobster species coexist in the southeast Pacific Juan Fernandez archipelago, Jasus frontalis (Milne-Edwards, 1837) and Acantharctus delfini (Bouvier, 1909). Like most lobster species they undergo a prolonged larval period, which is particularly long for J. frontalis (> 16 months). Though typical of Palinurids, this long larval duration is usually not thought to be conducive to local recruitment. While it is known that settlement is confined to the three islands of the archipelago (Robinson Crusoe, Alejandro Selkirk and Santa Clara) and Desventuradas Islands (aprox. 800 km to the north), it remains poorly understood how local larval supply allows such distribution pattern. The goal of this study is twofold. Firstly, we aimed to characterize the distribution and abundance of the larvae of these two species around Robinson Crusoe Island using plankton tows and systematic hydrographic records between October 2008 to March of 2011, thus providing the first systematic and prolonged coupled biophysical observations in the nearshore of the archipelago. We hypothesize that spatial and temporal larval distribution patterns are associated to their retention around the archipelago, thus contributing to our knowledge of the physical and biological processes maintaining their extreme isolation. Secondly, using molecular genetics, we confirm a simple taxonomic criteria to distinguish the larvae of the two species, thus aiding future studies of larval dynamics. Throughout phyllosomas of A. delfini were more abundant than that of J. frontalis. Both species were more abundant on the northern shores of Robinson Crusoe Island and generally associated with warmer and saltier waters and mostly present in the samples collected during spring and summer months. Phyllosomas of both species were more abundant during night-time tows in the upper layer of the water column surveyed suggesting a diurnal vertical migration behavior which, for coastal dwelling meroplanktonic species, can be related to a nearshore larval retention mechanism. These preliminary results represent a pioneering effort to understand the mechanisms driving the endemism and extreme isolation of the two study species.
dc.fechaingreso.objetodigital2024-05-30
dc.format.extent12 páginas
dc.fuente.origenWOS
dc.identifier.doi10.4067/S0716-078X2011000300006
dc.identifier.eissn0717-6317
dc.identifier.issn0716-078X
dc.identifier.urihttps://doi.org/10.4067/S0716-078X2011000300006
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76215
dc.identifier.wosidWOS:000298514900006
dc.information.autorucCiencias Biológicas;Bennett R;S/I;157860
dc.information.autorucCiencias Biológicas;Cáceres-Montenegro I;S/I;200131
dc.information.autorucCiencias Biológicas;Guerra J;S/I;171907
dc.information.autorucCiencias Biológicas;Henríquez L;S/I;174921
dc.information.autorucCiencias Biológicas;Magnolfi S;S/I;168368
dc.information.autorucCiencias Biológicas;Palma A;S/I;68941
dc.information.autorucCiencias Biológicas;Palma R;S/I;100250
dc.issue.numero3
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final390
dc.pagina.inicio379
dc.publisherSOC BIOLGIA CHILE
dc.revistaREVISTA CHILENA DE HISTORIA NATURAL
dc.rightsacceso abierto
dc.subjectendemism. lobsters
dc.subjectoceanic island
dc.subjectphyllosoma
dc.subjectDIEL VERTICAL MIGRATION
dc.subjectCONCHOLEPAS-CONCHOLEPAS
dc.subjectDISPERSAL DISTANCE
dc.subjectCOMPETENT LARVAE
dc.subjectCURRENT SYSTEM
dc.subjectWATER MASSES
dc.subjectRECRUITMENT
dc.subjectSETTLEMENT
dc.subjectCOAST
dc.subjectCONNECTIVITY
dc.subject.ods15 Life on Land
dc.subject.ods14 Life Below Water
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.subject.odspa14 Vida submarina
dc.titleNear-shore distribution of phyllosomas of the two only lobster species (Decapoda: Achelata) present in Robinson Crusoe Island and endemic to the Juan Fernandez archipelago
dc.typeartículo
dc.volumen84
sipa.codpersvinculados157860
sipa.codpersvinculados200131
sipa.codpersvinculados171907
sipa.codpersvinculados174921
sipa.codpersvinculados168368
sipa.codpersvinculados68941
sipa.codpersvinculados100250
sipa.indexWOS
sipa.indexScielo
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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