Canary Islands (NE Atlantic) as a biodiversity "hotspot" of Gambierdiscus: Implications for future trends of ciguatera in the area

In the present study the geographical distribution, abundance and composition of Gambierdiscus was described over a 600 km longitudinal scale in the Canary Islands. Samples for cell counts, isolation and identification of Gambierdiscus were obtained from five islands (El Hierro, Tenerife, Gran Canar...

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Detalles Bibliográficos
Autores: Rodríguez Hernández, Francisco José, Fraga, Santiago, Ramilo-Rivero, María Isabel, Rial, Pilar, Figueroa, Rosa Isabel, Riobó, Pilar, Bravo, Isabel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2017
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::d8736a23b853f44630c22dbef9b8909c
Acceso en línea:http://hdl.handle.net/10261/323857
Access Level:acceso abierto
Palabra clave:Centro Oceanográfico de Vigo
Benthic dinoflagellates
Medio Marino
Canary Islands
Ciguatera
Gambierdiscus
LSUrRNA
SSUrRNA
fish
ciguatera
biodiversity
islands
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oai_identifier_str oai:dnet:digitalcsic_::d8736a23b853f44630c22dbef9b8909c
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spelling Canary Islands (NE Atlantic) as a biodiversity "hotspot" of Gambierdiscus: Implications for future trends of ciguatera in the areaRodríguez Hernández, Francisco JoséFraga, SantiagoRamilo-Rivero, María IsabelRial, PilarFigueroa, Rosa IsabelRiobó, PilarBravo, IsabelCentro Oceanográfico de VigoBenthic dinoflagellatesMedio MarinoCanary IslandsCiguateraGambierdiscusLSUrRNASSUrRNAfishciguaterabiodiversityislandsIn the present study the geographical distribution, abundance and composition of Gambierdiscus was described over a 600 km longitudinal scale in the Canary Islands. Samples for cell counts, isolation and identification of Gambierdiscus were obtained from five islands (El Hierro, Tenerife, Gran Canaria, Fuerteventura and Lanzarote). Average densities of Gambierdiscus spp. between 0 and 2200 cells g−1 blot dry weight of macrophyte were recorded. Morphological (light microscopy and SEM techniques) and molecular analyses (LSU and SSU rDNA sequencing of cultures and single cells from the field) of Gambierdiscus was performed. Five Gambierdiscus species (G. australes, G. caribaeus, G. carolinianus, G. excentricus and G. silvae), together with a new putative species (Gambierdiscus ribotype 3) were identified. These results suggest that some cases of CFP in the region could be associated with the accumulation of ciguatoxins in the marine food web acquired from local populations of Gambierdiscus. This unexpected high diversity of Gambierdiscus species in an area which a priori is not under risk of ciguatera, hints at an ancient settlement of Gambierdiscus populations, likely favored by warmer climate conditions in the Miocene Epoch (when oldest current Canary Islands were created), in contrast with cooler present ones. Currently, warming trends associated with climate change could contribute to extend favorable environmental conditions in the area for Gambierdiscus growth especially during winter months.SI202320232017info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/323857reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Vigoinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::d8736a23b853f44630c22dbef9b8909c2026-05-22T06:33:51Z
dc.title.none.fl_str_mv Canary Islands (NE Atlantic) as a biodiversity "hotspot" of Gambierdiscus: Implications for future trends of ciguatera in the area
title Canary Islands (NE Atlantic) as a biodiversity "hotspot" of Gambierdiscus: Implications for future trends of ciguatera in the area
spellingShingle Canary Islands (NE Atlantic) as a biodiversity "hotspot" of Gambierdiscus: Implications for future trends of ciguatera in the area
Rodríguez Hernández, Francisco José
Centro Oceanográfico de Vigo
Benthic dinoflagellates
Medio Marino
Canary Islands
Ciguatera
Gambierdiscus
LSUrRNA
SSUrRNA
fish
ciguatera
biodiversity
islands
title_short Canary Islands (NE Atlantic) as a biodiversity "hotspot" of Gambierdiscus: Implications for future trends of ciguatera in the area
title_full Canary Islands (NE Atlantic) as a biodiversity "hotspot" of Gambierdiscus: Implications for future trends of ciguatera in the area
title_fullStr Canary Islands (NE Atlantic) as a biodiversity "hotspot" of Gambierdiscus: Implications for future trends of ciguatera in the area
title_full_unstemmed Canary Islands (NE Atlantic) as a biodiversity "hotspot" of Gambierdiscus: Implications for future trends of ciguatera in the area
title_sort Canary Islands (NE Atlantic) as a biodiversity "hotspot" of Gambierdiscus: Implications for future trends of ciguatera in the area
dc.creator.none.fl_str_mv Rodríguez Hernández, Francisco José
Fraga, Santiago
Ramilo-Rivero, María Isabel
Rial, Pilar
Figueroa, Rosa Isabel
Riobó, Pilar
Bravo, Isabel
author Rodríguez Hernández, Francisco José
author_facet Rodríguez Hernández, Francisco José
Fraga, Santiago
Ramilo-Rivero, María Isabel
Rial, Pilar
Figueroa, Rosa Isabel
Riobó, Pilar
Bravo, Isabel
author_role author
author2 Fraga, Santiago
Ramilo-Rivero, María Isabel
Rial, Pilar
Figueroa, Rosa Isabel
Riobó, Pilar
Bravo, Isabel
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Centro Oceanográfico de Vigo
Benthic dinoflagellates
Medio Marino
Canary Islands
Ciguatera
Gambierdiscus
LSUrRNA
SSUrRNA
fish
ciguatera
biodiversity
islands
topic Centro Oceanográfico de Vigo
Benthic dinoflagellates
Medio Marino
Canary Islands
Ciguatera
Gambierdiscus
LSUrRNA
SSUrRNA
fish
ciguatera
biodiversity
islands
description In the present study the geographical distribution, abundance and composition of Gambierdiscus was described over a 600 km longitudinal scale in the Canary Islands. Samples for cell counts, isolation and identification of Gambierdiscus were obtained from five islands (El Hierro, Tenerife, Gran Canaria, Fuerteventura and Lanzarote). Average densities of Gambierdiscus spp. between 0 and 2200 cells g−1 blot dry weight of macrophyte were recorded. Morphological (light microscopy and SEM techniques) and molecular analyses (LSU and SSU rDNA sequencing of cultures and single cells from the field) of Gambierdiscus was performed. Five Gambierdiscus species (G. australes, G. caribaeus, G. carolinianus, G. excentricus and G. silvae), together with a new putative species (Gambierdiscus ribotype 3) were identified. These results suggest that some cases of CFP in the region could be associated with the accumulation of ciguatoxins in the marine food web acquired from local populations of Gambierdiscus. This unexpected high diversity of Gambierdiscus species in an area which a priori is not under risk of ciguatera, hints at an ancient settlement of Gambierdiscus populations, likely favored by warmer climate conditions in the Miocene Epoch (when oldest current Canary Islands were created), in contrast with cooler present ones. Currently, warming trends associated with climate change could contribute to extend favorable environmental conditions in the area for Gambierdiscus growth especially during winter months.
publishDate 2017
dc.date.none.fl_str_mv 2017
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/323857
url http://hdl.handle.net/10261/323857
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Vigo
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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