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DIGITAL.CSIC
Article . 2023
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DIGITAL.CSIC
Article . 2023
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Distribución espacial de Dinophysis spp. y detección de toxinas DSP en el agua mediante resinas Diaion (verano 2006, región de Los Lagos, Chile).

Authors: Pizarro, G. (Gemita); Alarcón, C. (César); Franco, J.M. (José Mariano); Palma, M. (Mauricio); Escalera-Moura, L. (Laura); Reguera, B. (Beatriz); Vidal, G. (Gastón); +1 Authors

Distribución espacial de Dinophysis spp. y detección de toxinas DSP en el agua mediante resinas Diaion (verano 2006, región de Los Lagos, Chile).

Abstract

En Chile, la ocurrencia de episodios tóxicos diarreogénicos causados por dinoflagelados ha sido señalada en reiteradas oportunidades desde 1970 a la fecha con una mayor frecuencia de eventos en la zona sur-austral. Dinophysis acuta, D. acuminata, D. rotundata y D. caudata son las especies que se encuentran durante primavera y verano. Estos taxones han sido citados como productores de toxinas diarreicas en Europa a excepción de D. rotundata. Sin embargo, en nuestro país aún se desconoce la mayor parte de los perfiles y contenido de toxinas de las poblaciones que se encuentran presentes en nuestras costas. Debido a que las toxinas diarreicas son parcialmente liberadas al agua por las microalgas, ha sido posible realizar un seguimiento in situ de éstas en la columna de agua en varias partes del mundo mediante el uso de bolsitas conteniendo resinas sintéticas. Durante este estudio, se desplegaron bolsitas con resinas en diez estaciones ubicadas en la costa este de la isla de Chiloé, entre diciembre de 2005 y febrero de 2006. Los resultados mostraron que las toxinas predominantes en la columna de agua fueron PTX2 y DTX1 en ocho y tres de las estaciones, respectivamente, de un total de diez. El método fue suficientemente sensible para ser utilizado en la descripción de perfiles de toxinas lipofílicas. Sin embargo, para establecer una asociación entre las toxinas encontradas y la presencia de dinoflagelados nocivos en el agua, se requiere realizar un seguimiento de ambas variables durante un período estacional en el que suelen ocurrir las floraciones de algas nocivas

In Chile, the occurrence of diarrhoegenic toxic episodes caused by dinoflagellates has been indicated in repeated opportunities from 1970 to date with a greater events frequency in the south-austral zone of the country. Dinophysis acuta, D. acuminata, D. rotundata and D. caudata are the dinoflagellates present during spring and summer. These species have been reported to produce diarrhoegenic toxins in Europe with exception D. rotundata. Nevertheless it is not known with certainty the profiles and toxin content of the majority of the populations present in our coasts is unknown. Because diarrhoegenic toxins are partially released into water bodies has been possible to track them in situ in several parts of the world through the use of bags containing synthetic resins. During this study, synthetic resins contained into bags were suspended en the water column in 10 stations located in the East coast of Chiloé Island between December 2005 and February 2006. The results showed that the predominant toxins in the water column were PTX2 and DTX1 in eight and three of the stations, respectively. The method is sufficiently sensible to be used in the description of lipophilic toxin profiles and to associate them with the producing dinoflagellates of these toxins that are present in the water. Nevertheless, to establish an association between the toxins found and the harmful dinoflagellates present in the water, are required to track both variables during a seasonal period when usually the harmful algae blooms happen.

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Spain
Keywords

DSP toxins, Okadaic acid, Lipophilic toxins, Toxinas VDM, Pectenotoxinas, Pectenotoxins, Centro Oceanográfico de Vigo, Ácido okadaico, Toxinas lipofílicas, Yesotoxinas, Yessotoxins, Medio Marino, Dinophysis, SPATT

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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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