Small and patchy is enough: An example about how toxic HAB events can spread through low resting cyst loads
The frequency of harmful algal blooms (HABs) has increased over the last two decades, a phenomenon enhanced by global climate change. However, the effects of climate change will not be distributed equally, and Chile has emerged as one important, vulnerable area. The Chilean Patagonian region (41‒56°...
| Autores: | , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2023 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/343080 |
| Acceso en línea: | http://hdl.handle.net/10261/343080 https://api.elsevier.com/content/abstract/scopus_id/85171775993 |
| Access Level: | acceso abierto |
| Palabra clave: | Alexandrium catenella Chilean Patagonia Ecoregion Paralytic Shellfish Poisoning Resting cysts Strain sexual compatibility |
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Small and patchy is enough: An example about how toxic HAB events can spread through low resting cyst loadsRodríguez-Villegas, CamiloFigueroa, Rosa IsabelBaldrich, ÁngelaPérez-Santos, IvánDíaz, ManuelTomasetti, Stephen JSeguel, MiriamÁlvarez, GonzaloSalgado, PabloDíaz, Patricio AAlexandrium catenellaChilean PatagoniaEcoregionParalytic Shellfish PoisoningResting cystsStrain sexual compatibilityThe frequency of harmful algal blooms (HABs) has increased over the last two decades, a phenomenon enhanced by global climate change. However, the effects of climate change will not be distributed equally, and Chile has emerged as one important, vulnerable area. The Chilean Patagonian region (41‒56°S) hosts two marine ecoregions that support robust blue economies via wild fisheries, aquaculture, and tourism. However, the harmful algal bloom-forming dinoflagellate Alexandrium catenella, a causative agent of paralytic shellfish poisoning outbreaks, threatens the viability of blue industries in this region and others worldwide. Despite the proliferation of A. catenella blooms over the last few decades, the role of sedimentary resting cysts in the recurrence of harmful algal blooms and the species' northward expansion across Chilean Patagonia is not well understood. As a resting cyst-producing species, the sediment-cyst dynamics of A. catenella likely contribute to the geographical expansion and bloom recurrence of this species. For this purpose, we analyzed a decade of A. catenella surface sediment cyst records across the two ecoregions of the Chilean Patagonian System that were further stratified into five subregions based on water temperature, salinity, dissolved oxygen, and nutrient characteristics. We also analyzed spatio-temporal cyst dynamics in a pre-, during-, and post-bloom scenario of the Chiloense ecoregion (more northern) of the Magellanic province. Our results indicated highly variable A. catenella resting cyst abundances, with a maximum of 221 cysts cm-3 recorded in 2002 after an intense bloom. Generalized linear mixed models and linear mixed models found that sampling season, subregion, and Total Organic Matter (%) explained resting cyst presence and density. The results also demonstrated the presence of A. catenella cysts in northern subregions, evidencing the northward geographical expansion observed during the last few decades. The risks of A. catenella bloom recurrence from small, patchy resting cyst distributions across broad geographical areas and under changing environmental conditions are discussed.This work was funded by Comité Oceanográfico Nacional (CONA, CF-07 to CF-16 projects), Centro de Biotecnología y Bioingeniería (CeBiB) (PIA project FB0001, ANID, Chile), and by COPAS COASTAL FB210021, and CIEP R20F002. Rosa I. Figueroa was funded by a national project from the Spanish Ministry of Science and Innovation and the European Community, European Regional Development Fund (ERDF; Project BIOTOX PID2021–1256430B-C22).Peer reviewedElsevierComité Oceanográfico Nacional (Chile)Centro de Biotecnología y Bioingeniería (Chile)Ministerio de Ciencia e Innovación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/343080https://api.elsevier.com/content/abstract/scopus_id/85171775993reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-125643OB-C22Harmful algaehttps://doi.org/10.1016/j.hal.2023.102495Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3430802026-05-22T06:33:51Z |
| dc.title.none.fl_str_mv |
Small and patchy is enough: An example about how toxic HAB events can spread through low resting cyst loads |
| title |
Small and patchy is enough: An example about how toxic HAB events can spread through low resting cyst loads |
| spellingShingle |
Small and patchy is enough: An example about how toxic HAB events can spread through low resting cyst loads Rodríguez-Villegas, Camilo Alexandrium catenella Chilean Patagonia Ecoregion Paralytic Shellfish Poisoning Resting cysts Strain sexual compatibility |
| title_short |
Small and patchy is enough: An example about how toxic HAB events can spread through low resting cyst loads |
| title_full |
Small and patchy is enough: An example about how toxic HAB events can spread through low resting cyst loads |
| title_fullStr |
Small and patchy is enough: An example about how toxic HAB events can spread through low resting cyst loads |
| title_full_unstemmed |
Small and patchy is enough: An example about how toxic HAB events can spread through low resting cyst loads |
| title_sort |
Small and patchy is enough: An example about how toxic HAB events can spread through low resting cyst loads |
| dc.creator.none.fl_str_mv |
Rodríguez-Villegas, Camilo Figueroa, Rosa Isabel Baldrich, Ángela Pérez-Santos, Iván Díaz, Manuel Tomasetti, Stephen J Seguel, Miriam Álvarez, Gonzalo Salgado, Pablo Díaz, Patricio A |
| author |
Rodríguez-Villegas, Camilo |
| author_facet |
Rodríguez-Villegas, Camilo Figueroa, Rosa Isabel Baldrich, Ángela Pérez-Santos, Iván Díaz, Manuel Tomasetti, Stephen J Seguel, Miriam Álvarez, Gonzalo Salgado, Pablo Díaz, Patricio A |
| author_role |
author |
| author2 |
Figueroa, Rosa Isabel Baldrich, Ángela Pérez-Santos, Iván Díaz, Manuel Tomasetti, Stephen J Seguel, Miriam Álvarez, Gonzalo Salgado, Pablo Díaz, Patricio A |
| author2_role |
author author author author author author author author author |
| dc.contributor.none.fl_str_mv |
Comité Oceanográfico Nacional (Chile) Centro de Biotecnología y Bioingeniería (Chile) Ministerio de Ciencia e Innovación (España) Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72] |
| dc.subject.none.fl_str_mv |
Alexandrium catenella Chilean Patagonia Ecoregion Paralytic Shellfish Poisoning Resting cysts Strain sexual compatibility |
| topic |
Alexandrium catenella Chilean Patagonia Ecoregion Paralytic Shellfish Poisoning Resting cysts Strain sexual compatibility |
| description |
The frequency of harmful algal blooms (HABs) has increased over the last two decades, a phenomenon enhanced by global climate change. However, the effects of climate change will not be distributed equally, and Chile has emerged as one important, vulnerable area. The Chilean Patagonian region (41‒56°S) hosts two marine ecoregions that support robust blue economies via wild fisheries, aquaculture, and tourism. However, the harmful algal bloom-forming dinoflagellate Alexandrium catenella, a causative agent of paralytic shellfish poisoning outbreaks, threatens the viability of blue industries in this region and others worldwide. Despite the proliferation of A. catenella blooms over the last few decades, the role of sedimentary resting cysts in the recurrence of harmful algal blooms and the species' northward expansion across Chilean Patagonia is not well understood. As a resting cyst-producing species, the sediment-cyst dynamics of A. catenella likely contribute to the geographical expansion and bloom recurrence of this species. For this purpose, we analyzed a decade of A. catenella surface sediment cyst records across the two ecoregions of the Chilean Patagonian System that were further stratified into five subregions based on water temperature, salinity, dissolved oxygen, and nutrient characteristics. We also analyzed spatio-temporal cyst dynamics in a pre-, during-, and post-bloom scenario of the Chiloense ecoregion (more northern) of the Magellanic province. Our results indicated highly variable A. catenella resting cyst abundances, with a maximum of 221 cysts cm-3 recorded in 2002 after an intense bloom. Generalized linear mixed models and linear mixed models found that sampling season, subregion, and Total Organic Matter (%) explained resting cyst presence and density. The results also demonstrated the presence of A. catenella cysts in northern subregions, evidencing the northward geographical expansion observed during the last few decades. The risks of A. catenella bloom recurrence from small, patchy resting cyst distributions across broad geographical areas and under changing environmental conditions are discussed. |
| publishDate |
2023 |
| dc.date.none.fl_str_mv |
2023 2024 2024 |
| 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 |
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article |
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acceptedVersion |
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http://hdl.handle.net/10261/343080 https://api.elsevier.com/content/abstract/scopus_id/85171775993 |
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http://hdl.handle.net/10261/343080 https://api.elsevier.com/content/abstract/scopus_id/85171775993 |
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Inglés |
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Inglés |
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#PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/PID2021-125643OB-C22 Harmful algae https://doi.org/10.1016/j.hal.2023.102495 Sí |
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