Trends of natural accumulation and detoxification of paralytic shellfish poison in two bivalves from the Northwest Patagonian inland sea

The accumulation of marine toxins in aquatic filterers is a recurrent event that imposes serious risks to human health and important economic losses. While direct monitoring of seafood toxicity will remain as a priority for human health protection, a better understanding of toxin accumulation and de...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Molinet,Carlos, Niklitschek,Edwin, Seguel,Miriam, Díaz,Patricio
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2010
Materias:	Alexandrium catenella Aulacomya atra Mytilus chilensis modelling harmful algae blooms
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000200001
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-19572010000200001
record_format	dspace
spelling	oai:scielo:S0718-195720100002000012010-09-14Trends of natural accumulation and detoxification of paralytic shellfish poison in two bivalves from the Northwest Patagonian inland seaMolinet,CarlosNiklitschek,EdwinSeguel,MiriamDíaz,Patricio Alexandrium catenella Aulacomya atra Mytilus chilensis modelling harmful algae blooms The accumulation of marine toxins in aquatic filterers is a recurrent event that imposes serious risks to human health and important economic losses. While direct monitoring of seafood toxicity will remain as a priority for human health protection, a better understanding of toxin accumulation and detoxification dynamics might allow for forecasting tools to design better cost-effective mitigation strategies for bivalve farming and fisheries. In this study we explore monitoring data to extract temporal trends in natural accumulation and detoxification of paralytic shellfish poison (PSP) for two important mytilids from the Northwest Patagonian inland sea: Mytilus chilensis and Aulacomya atra. The data were collected between 1995 and 1998 in 13 stations, during two Alexandrium catenella blooms. The generalized linear models approach applied indicated A. catenella concentration, exposure time, salinity, temperature and zone had significant effects upon PSP concentration during the accumulation phase. Time, salinity, temperature and zone had significant effects upon PSP concentration during the detoxification phase. To obtain quantitative descriptors for accumulation and detoxification dynamics, we construct a simplified one-box model, defined by two parameters: 1) the proportionality constant between A. catenella concentration and PSP and 2) the instantaneous PSP decay rate. In spite of the limited nature of available data, the proposed model described significantly the observed variation in accumulation and detoxification trends of PSP. It remains. However, an evident need to validate the model against independent data sets from the same area and to identify and quantify sources of variability, uncertainty and bias that may affect model parameters.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.45 n.2 20102010-08-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000200001en10.4067/S0718-19572010000200001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Alexandrium catenella Aulacomya atra Mytilus chilensis modelling harmful algae blooms
spellingShingle	Alexandrium catenella Aulacomya atra Mytilus chilensis modelling harmful algae blooms Molinet,Carlos Niklitschek,Edwin Seguel,Miriam Díaz,Patricio Trends of natural accumulation and detoxification of paralytic shellfish poison in two bivalves from the Northwest Patagonian inland sea
description	The accumulation of marine toxins in aquatic filterers is a recurrent event that imposes serious risks to human health and important economic losses. While direct monitoring of seafood toxicity will remain as a priority for human health protection, a better understanding of toxin accumulation and detoxification dynamics might allow for forecasting tools to design better cost-effective mitigation strategies for bivalve farming and fisheries. In this study we explore monitoring data to extract temporal trends in natural accumulation and detoxification of paralytic shellfish poison (PSP) for two important mytilids from the Northwest Patagonian inland sea: Mytilus chilensis and Aulacomya atra. The data were collected between 1995 and 1998 in 13 stations, during two Alexandrium catenella blooms. The generalized linear models approach applied indicated A. catenella concentration, exposure time, salinity, temperature and zone had significant effects upon PSP concentration during the accumulation phase. Time, salinity, temperature and zone had significant effects upon PSP concentration during the detoxification phase. To obtain quantitative descriptors for accumulation and detoxification dynamics, we construct a simplified one-box model, defined by two parameters: 1) the proportionality constant between A. catenella concentration and PSP and 2) the instantaneous PSP decay rate. In spite of the limited nature of available data, the proposed model described significantly the observed variation in accumulation and detoxification trends of PSP. It remains. However, an evident need to validate the model against independent data sets from the same area and to identify and quantify sources of variability, uncertainty and bias that may affect model parameters.
author	Molinet,Carlos Niklitschek,Edwin Seguel,Miriam Díaz,Patricio
author_facet	Molinet,Carlos Niklitschek,Edwin Seguel,Miriam Díaz,Patricio
author_sort	Molinet,Carlos
title	Trends of natural accumulation and detoxification of paralytic shellfish poison in two bivalves from the Northwest Patagonian inland sea
title_short	Trends of natural accumulation and detoxification of paralytic shellfish poison in two bivalves from the Northwest Patagonian inland sea
title_full	Trends of natural accumulation and detoxification of paralytic shellfish poison in two bivalves from the Northwest Patagonian inland sea
title_fullStr	Trends of natural accumulation and detoxification of paralytic shellfish poison in two bivalves from the Northwest Patagonian inland sea
title_full_unstemmed	Trends of natural accumulation and detoxification of paralytic shellfish poison in two bivalves from the Northwest Patagonian inland sea
title_sort	trends of natural accumulation and detoxification of paralytic shellfish poison in two bivalves from the northwest patagonian inland sea
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572010000200001
work_keys_str_mv	AT molinetcarlos trendsofnaturalaccumulationanddetoxificationofparalyticshellfishpoisonintwobivalvesfromthenorthwestpatagonianinlandsea AT niklitschekedwin trendsofnaturalaccumulationanddetoxificationofparalyticshellfishpoisonintwobivalvesfromthenorthwestpatagonianinlandsea AT seguelmiriam trendsofnaturalaccumulationanddetoxificationofparalyticshellfishpoisonintwobivalvesfromthenorthwestpatagonianinlandsea AT diazpatricio trendsofnaturalaccumulationanddetoxificationofparalyticshellfishpoisonintwobivalvesfromthenorthwestpatagonianinlandsea
_version_	1714202294901276672

Trends of natural accumulation and detoxification of paralytic shellfish poison in two bivalves from the Northwest Patagonian inland sea

Ejemplares similares