Detection of the phycotoxin pectenotoxin-2 in waters around King George Island, Antarctica

In order to set a base line for the observation of planktonic community changes due to global change, protistan plankton sampling in combination with phycotoxin measurements and solid phase adsorption toxin tracking (SPATT) was performed in two bays of King George Island (KGI) in January 2013 and 20...

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Detalles Bibliográficos
Autores principales: Krock, Bernd, Schloss, Irene R., Trefault, Nicole, Tillmann, Urban, Hernando, Marcelo Pablo, Deregibus, Dolores, Antoni, Julieta, Almandoz, Gastón Osvaldo, Hoppenrath, Mona
Formato: Articulo
Lenguaje:Inglés
Publicado: 2020
Materias:
Biología
Ciencias Naturales
Protistan plankton community
Dinoflagellates
Phycotoxin
Liquid chromatography-tandem mass spectrometry (LC–MS/MS)
Solid phase adsorption toxins tracking (SPATT)
Harmful algae bloom (HAB)
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/138667
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-138667
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Biología
Ciencias Naturales
Protistan plankton community
Dinoflagellates
Phycotoxin
Liquid chromatography-tandem mass spectrometry (LC–MS/MS)
Solid phase adsorption toxins tracking (SPATT)
Harmful algae bloom (HAB)
spellingShingle Biología
Ciencias Naturales
Protistan plankton community
Dinoflagellates
Phycotoxin
Liquid chromatography-tandem mass spectrometry (LC–MS/MS)
Solid phase adsorption toxins tracking (SPATT)
Harmful algae bloom (HAB)
Krock, Bernd
Schloss, Irene R.
Trefault, Nicole
Tillmann, Urban
Hernando, Marcelo Pablo
Deregibus, Dolores
Antoni, Julieta
Almandoz, Gastón Osvaldo
Hoppenrath, Mona
Detection of the phycotoxin pectenotoxin-2 in waters around King George Island, Antarctica
topic_facet Biología
Ciencias Naturales
Protistan plankton community
Dinoflagellates
Phycotoxin
Liquid chromatography-tandem mass spectrometry (LC–MS/MS)
Solid phase adsorption toxins tracking (SPATT)
Harmful algae bloom (HAB)
description In order to set a base line for the observation of planktonic community changes due to global change, protistan plankton sampling in combination with phycotoxin measurements and solid phase adsorption toxin tracking (SPATT) was performed in two bays of King George Island (KGI) in January 2013 and 2014. In addition, SPATT sampling was performed in Potter Cove during a one-year period from January 2014 until January 2015. Known toxigenic taxa were not firmly identified in plankton samples but there was microscopical evidence for background level presence of Dinophysis spp. in the area. This was consistent with environmental conditions during the sampling periods, especially strong mixing of the water column and low water temperatures that do not favor dinoflagellate proliferations. Due to the lack of significant abundance of thecate toxigenic dinoflagellate species in microplankton samples, no phycotoxins were found in net tow samples. In contrast, SPATT sampling revealed the presence of dissolved pectenotoxin-2 (PTX-2) and its hydrolyzed form PTX-2 seco acid in both bays and during the entire one-year sampling period. The presence of dissolved PTX in coastal waters of KGI is strong new evidence for the presence of PTX-producing species, i.e., dinoflagellates of the genus Dinophysis in the area. The presence of phycotoxins and their respective producers, even at the low background concentrations found in this study, may be the seed of possible proliferations of these species under changing environmental conditions. Furthermore, phycotoxins can be used as chemotaxonomic markers for a very specific group of plankton thus allowing to track the presence of this group over time.
format Articulo
Articulo
author Krock, Bernd
Schloss, Irene R.
Trefault, Nicole
Tillmann, Urban
Hernando, Marcelo Pablo
Deregibus, Dolores
Antoni, Julieta
Almandoz, Gastón Osvaldo
Hoppenrath, Mona
author_facet Krock, Bernd
Schloss, Irene R.
Trefault, Nicole
Tillmann, Urban
Hernando, Marcelo Pablo
Deregibus, Dolores
Antoni, Julieta
Almandoz, Gastón Osvaldo
Hoppenrath, Mona
author_sort Krock, Bernd
title Detection of the phycotoxin pectenotoxin-2 in waters around King George Island, Antarctica
title_short Detection of the phycotoxin pectenotoxin-2 in waters around King George Island, Antarctica
title_full Detection of the phycotoxin pectenotoxin-2 in waters around King George Island, Antarctica
title_fullStr Detection of the phycotoxin pectenotoxin-2 in waters around King George Island, Antarctica
title_full_unstemmed Detection of the phycotoxin pectenotoxin-2 in waters around King George Island, Antarctica
title_sort detection of the phycotoxin pectenotoxin-2 in waters around king george island, antarctica
publishDate 2020
url http://sedici.unlp.edu.ar/handle/10915/138667
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