Data/hora: 06/06/2024 02:49:48

Provedor de dados: 	Revista Chilena de Historia Natural	
País: 	Chile	
Título: 	Short-term feeding response of the mussel Mytilus chilensis exposed to diets containing the toxic dinoflagellate Alexandrium catenella	
Autores: 	NAVARRO,JORGE M; CONTRERAS,ANDREA M; CHAPARRO,ÓSCAR R.	
Data: 	2008-03-01	
Ano: 	2008	
Palavras-chave: 	Mytilus chilensis; Feeding response; PSP; Dinoflagellates.	
Resumo: 	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	
Tipo: 	Journal article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2008000100004	
Editor: 	Sociedad de Biología de Chile	
Formato: 	text/html	
Fonte: 	Revista chilena de historia natural  v.81 n.1 2008