Seasonal variability of Dinophysis spp. and Protoceratium reticulatum associated to lipophilic shellfish toxins in a strongly stratified Chilean fjord
The fine scale vertical distribution of Dinophysis spp. and Protoceratium reticulatum (potential producers of lipophilic shellfish toxins, LSTs) and its relation with LSTs in shellfish was studied in Reloncaví fjord, a strongly stratified system in Southern Chile. Samples were taken over two years f...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Main Authors: | , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
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2014
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Online Access: | http://hdl.handle.net/10508/1773 http://hdl.handle.net/10261/323954 https://doi.org/10.1016/j.dsr2.2013.01.014 |
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ftcsic:oai:digital.csic.es:10261/323954 2024-02-11T10:06:47+01:00 Seasonal variability of Dinophysis spp. and Protoceratium reticulatum associated to lipophilic shellfish toxins in a strongly stratified Chilean fjord Alves-de-Souza, Catharina Varela, Daniel Contreras, Cristóbal Iglesia, Pablo de la Fernández, Pamela Hipp, Byron Hernández, Cristina Riobó, Pilar Reguera, Beatriz Franco, José Mariano Diogène, Jorge García, Carlos Lagos, Néstor Atlantic Ocean North Atlantic Norwegian Sea 2014 http://hdl.handle.net/10508/1773 http://hdl.handle.net/10261/323954 https://doi.org/10.1016/j.dsr2.2013.01.014 unknown Centro Oceanográfico de Vigo http://www.sciencedirect.com/science/article/pii/S0967064513000337 Deep-Sea Research Part II-Topical Studies In Oceanography, 101, 2014: 152-162 http://hdl.handle.net/10508/1773 http://hdl.handle.net/10261/323954 doi:10.1016/j.dsr2.2013.01.014 5948 open Medio Marino Dinophysis acuminata Centro Oceanográfico de Vigo Fjords Vertical distribution Dinophysistoxins Pectenotoxins Yessotoxins research article 2014 ftcsic https://doi.org/10.1016/j.dsr2.2013.01.014 2024-01-16T11:47:24Z The fine scale vertical distribution of Dinophysis spp. and Protoceratium reticulatum (potential producers of lipophilic shellfish toxins, LSTs) and its relation with LSTs in shellfish was studied in Reloncaví fjord, a strongly stratified system in Southern Chile. Samples were taken over two years from late spring to early autumn (2007–2008 period) and from early spring to late summer (2008–2009 period). Dinophysis spp., in particular Dinophysis acuminata, were always detected, often forming thin layers in the region of the salinity driven pycnocline, with cell maxima for D. acuminata of 28.5×103 cells L−1 in March 2008 and 17.1×103 cells L−1 in November 2008. During the 2008–2009 sampling period, blooms of D. acuminata co-occurred with high densities of cryptophyceans and the ciliate Mesodinium spp. The highest levels of pectenotoxin-2 (PTX-2; 2.2 ng L−1) were found in the plankton in February 2009, associated with moderate densities of D. acuminata, Dinophysis tripos and Dinophysis subcircularis (0.1–0.6×103 cells L−1). However, only trace levels of PTX-2 were observed in bivalves at that time. Dinophysistoxin (DTX-1 and DTX-3) levels in bivalves and densities of Dinophysis spp. were not well correlated. Low DTX levels in bivalves observed during a major bloom of D. acuminata in March 2008 suggested that there is a large seasonal intraspecific variability in toxin content of Dinophysis spp. driven by changes in population structure associated with distinct LST toxin profiles in Reloncaví fjord during the study period. A heterogeneous vertical distribution was also observed for P. reticulatum, whose presence was restricted to summer months. A bloom of this species of 2.2×103 cells L−1 at 14 m depth in February 2009 was positively correlated with high concentrations of yessotoxins in bivalves (51–496 ng g−1) and plankton samples (3.2 ng L−1). Our results suggest that a review of monitoring strategies for Dinophysis spp. in strongly stratified fjord systems should be carried out. They also indicate that early ... Article in Journal/Newspaper North Atlantic Norwegian Sea Digital.CSIC (Spanish National Research Council) Norwegian Sea Deep Sea Research Part II: Topical Studies in Oceanography 101 152 162 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
unknown |
topic |
Medio Marino Dinophysis acuminata Centro Oceanográfico de Vigo Fjords Vertical distribution Dinophysistoxins Pectenotoxins Yessotoxins |
spellingShingle |
Medio Marino Dinophysis acuminata Centro Oceanográfico de Vigo Fjords Vertical distribution Dinophysistoxins Pectenotoxins Yessotoxins Alves-de-Souza, Catharina Varela, Daniel Contreras, Cristóbal Iglesia, Pablo de la Fernández, Pamela Hipp, Byron Hernández, Cristina Riobó, Pilar Reguera, Beatriz Franco, José Mariano Diogène, Jorge García, Carlos Lagos, Néstor Seasonal variability of Dinophysis spp. and Protoceratium reticulatum associated to lipophilic shellfish toxins in a strongly stratified Chilean fjord |
topic_facet |
Medio Marino Dinophysis acuminata Centro Oceanográfico de Vigo Fjords Vertical distribution Dinophysistoxins Pectenotoxins Yessotoxins |
description |
The fine scale vertical distribution of Dinophysis spp. and Protoceratium reticulatum (potential producers of lipophilic shellfish toxins, LSTs) and its relation with LSTs in shellfish was studied in Reloncaví fjord, a strongly stratified system in Southern Chile. Samples were taken over two years from late spring to early autumn (2007–2008 period) and from early spring to late summer (2008–2009 period). Dinophysis spp., in particular Dinophysis acuminata, were always detected, often forming thin layers in the region of the salinity driven pycnocline, with cell maxima for D. acuminata of 28.5×103 cells L−1 in March 2008 and 17.1×103 cells L−1 in November 2008. During the 2008–2009 sampling period, blooms of D. acuminata co-occurred with high densities of cryptophyceans and the ciliate Mesodinium spp. The highest levels of pectenotoxin-2 (PTX-2; 2.2 ng L−1) were found in the plankton in February 2009, associated with moderate densities of D. acuminata, Dinophysis tripos and Dinophysis subcircularis (0.1–0.6×103 cells L−1). However, only trace levels of PTX-2 were observed in bivalves at that time. Dinophysistoxin (DTX-1 and DTX-3) levels in bivalves and densities of Dinophysis spp. were not well correlated. Low DTX levels in bivalves observed during a major bloom of D. acuminata in March 2008 suggested that there is a large seasonal intraspecific variability in toxin content of Dinophysis spp. driven by changes in population structure associated with distinct LST toxin profiles in Reloncaví fjord during the study period. A heterogeneous vertical distribution was also observed for P. reticulatum, whose presence was restricted to summer months. A bloom of this species of 2.2×103 cells L−1 at 14 m depth in February 2009 was positively correlated with high concentrations of yessotoxins in bivalves (51–496 ng g−1) and plankton samples (3.2 ng L−1). Our results suggest that a review of monitoring strategies for Dinophysis spp. in strongly stratified fjord systems should be carried out. They also indicate that early ... |
format |
Article in Journal/Newspaper |
author |
Alves-de-Souza, Catharina Varela, Daniel Contreras, Cristóbal Iglesia, Pablo de la Fernández, Pamela Hipp, Byron Hernández, Cristina Riobó, Pilar Reguera, Beatriz Franco, José Mariano Diogène, Jorge García, Carlos Lagos, Néstor |
author_facet |
Alves-de-Souza, Catharina Varela, Daniel Contreras, Cristóbal Iglesia, Pablo de la Fernández, Pamela Hipp, Byron Hernández, Cristina Riobó, Pilar Reguera, Beatriz Franco, José Mariano Diogène, Jorge García, Carlos Lagos, Néstor |
author_sort |
Alves-de-Souza, Catharina |
title |
Seasonal variability of Dinophysis spp. and Protoceratium reticulatum associated to lipophilic shellfish toxins in a strongly stratified Chilean fjord |
title_short |
Seasonal variability of Dinophysis spp. and Protoceratium reticulatum associated to lipophilic shellfish toxins in a strongly stratified Chilean fjord |
title_full |
Seasonal variability of Dinophysis spp. and Protoceratium reticulatum associated to lipophilic shellfish toxins in a strongly stratified Chilean fjord |
title_fullStr |
Seasonal variability of Dinophysis spp. and Protoceratium reticulatum associated to lipophilic shellfish toxins in a strongly stratified Chilean fjord |
title_full_unstemmed |
Seasonal variability of Dinophysis spp. and Protoceratium reticulatum associated to lipophilic shellfish toxins in a strongly stratified Chilean fjord |
title_sort |
seasonal variability of dinophysis spp. and protoceratium reticulatum associated to lipophilic shellfish toxins in a strongly stratified chilean fjord |
publishDate |
2014 |
url |
http://hdl.handle.net/10508/1773 http://hdl.handle.net/10261/323954 https://doi.org/10.1016/j.dsr2.2013.01.014 |
op_coverage |
Atlantic Ocean North Atlantic Norwegian Sea |
geographic |
Norwegian Sea |
geographic_facet |
Norwegian Sea |
genre |
North Atlantic Norwegian Sea |
genre_facet |
North Atlantic Norwegian Sea |
op_relation |
Centro Oceanográfico de Vigo http://www.sciencedirect.com/science/article/pii/S0967064513000337 Deep-Sea Research Part II-Topical Studies In Oceanography, 101, 2014: 152-162 http://hdl.handle.net/10508/1773 http://hdl.handle.net/10261/323954 doi:10.1016/j.dsr2.2013.01.014 5948 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.dsr2.2013.01.014 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
101 |
container_start_page |
152 |
op_container_end_page |
162 |
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1790604743199948800 |