Short-term feeding response of the mussel Mytilus chilensis exposed to diets containing the toxic dinoflagellate Alexandrium catenella

The short-term feeding response of the bivalve Mytilus chilensis was measured using four diets containing different proportions of the toxic dinoflagellate Alexandrium catenella. The diets containing the highest concentrations of the dinoflagellate showed the greatest effect on the feeding activity...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	NAVARRO,JORGE M, CONTRERAS,ANDREA M, CHAPARRO,ÓSCAR R
Lenguaje:	English
Publicado:	Sociedad de Biología de Chile 2008
Materias:	Mytilus chilensis feeding response PSP dinoflagellates
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000100004
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0716-078X2008000100004
record_format	dspace
spelling	oai:scielo:S0716-078X20080001000042008-05-14Short-term feeding response of the mussel Mytilus chilensis exposed to diets containing the toxic dinoflagellate Alexandrium catenellaNAVARRO,JORGE MCONTRERAS,ANDREA MCHAPARRO,ÓSCAR R Mytilus chilensis feeding response PSP dinoflagellates The short-term feeding response of the bivalve Mytilus chilensis was measured using four diets containing different proportions of the toxic dinoflagellate Alexandrium catenella. The diets containing the highest concentrations of the dinoflagellate showed the greatest effect on the feeding activity in the mussel, with clearance and ingestión rates significantly reduced during the first hours of exposure. After this period, M. chilensis demonstrated a capacity to acclimate to the toxic diets, with feeding parameters reaching values similar to those of untreated control organisms. It was not clear if the negative effect on the feeding behavior was caused by the presence of the paralytic toxin, or due to the larger size of the dinoflagellate cells in comparison with cells of Isochrysis galbana used in the control diet. However, parallel studies with diets containing the nontoxic dinoflagellate Alexandrium affine of similar size and shape to that of A. catenella, suggested the cell size was the main cause for impairment of feeding behavior. The capacity for acclimation to either toxin or cell size by M. chilensis makes it a good indicator species for the early detection of harmful PSP events, since its relative insensitivity to the toxin allows it to quickly recover normal feeding behavior and permits it to accumulate PSP in its tissues in a short timeinfo:eu-repo/semantics/openAccessSociedad de Biología de ChileRevista chilena de historia natural v.81 n.1 20082008-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000100004en10.4067/S0716-078X2008000100004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Mytilus chilensis feeding response PSP dinoflagellates
spellingShingle	Mytilus chilensis feeding response PSP dinoflagellates NAVARRO,JORGE M CONTRERAS,ANDREA M CHAPARRO,ÓSCAR R Short-term feeding response of the mussel Mytilus chilensis exposed to diets containing the toxic dinoflagellate Alexandrium catenella
description	The short-term feeding response of the bivalve Mytilus chilensis was measured using four diets containing different proportions of the toxic dinoflagellate Alexandrium catenella. The diets containing the highest concentrations of the dinoflagellate showed the greatest effect on the feeding activity in the mussel, with clearance and ingestión rates significantly reduced during the first hours of exposure. After this period, M. chilensis demonstrated a capacity to acclimate to the toxic diets, with feeding parameters reaching values similar to those of untreated control organisms. It was not clear if the negative effect on the feeding behavior was caused by the presence of the paralytic toxin, or due to the larger size of the dinoflagellate cells in comparison with cells of Isochrysis galbana used in the control diet. However, parallel studies with diets containing the nontoxic dinoflagellate Alexandrium affine of similar size and shape to that of A. catenella, suggested the cell size was the main cause for impairment of feeding behavior. The capacity for acclimation to either toxin or cell size by M. chilensis makes it a good indicator species for the early detection of harmful PSP events, since its relative insensitivity to the toxin allows it to quickly recover normal feeding behavior and permits it to accumulate PSP in its tissues in a short time
author	NAVARRO,JORGE M CONTRERAS,ANDREA M CHAPARRO,ÓSCAR R
author_facet	NAVARRO,JORGE M CONTRERAS,ANDREA M CHAPARRO,ÓSCAR R
author_sort	NAVARRO,JORGE M
title	Short-term feeding response of the mussel Mytilus chilensis exposed to diets containing the toxic dinoflagellate Alexandrium catenella
title_short	Short-term feeding response of the mussel Mytilus chilensis exposed to diets containing the toxic dinoflagellate Alexandrium catenella
title_full	Short-term feeding response of the mussel Mytilus chilensis exposed to diets containing the toxic dinoflagellate Alexandrium catenella
title_fullStr	Short-term feeding response of the mussel Mytilus chilensis exposed to diets containing the toxic dinoflagellate Alexandrium catenella
title_full_unstemmed	Short-term feeding response of the mussel Mytilus chilensis exposed to diets containing the toxic dinoflagellate Alexandrium catenella
title_sort	short-term feeding response of the mussel mytilus chilensis exposed to diets containing the toxic dinoflagellate alexandrium catenella
publisher	Sociedad de Biología de Chile
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000100004
work_keys_str_mv	AT navarrojorgem shorttermfeedingresponseofthemusselmytiluschilensisexposedtodietscontainingthetoxicdinoflagellatealexandriumcatenella AT contrerasandream shorttermfeedingresponseofthemusselmytiluschilensisexposedtodietscontainingthetoxicdinoflagellatealexandriumcatenella AT chaparrooscarr shorttermfeedingresponseofthemusselmytiluschilensisexposedtodietscontainingthetoxicdinoflagellatealexandriumcatenella
_version_	1718439608959631360

Short-term feeding response of the mussel Mytilus chilensis exposed to diets containing the toxic dinoflagellate Alexandrium catenella

Ejemplares similares