Data/hora: 01/06/2024 07:43:01

Provedor de dados: 	5	
País: 	France	
Título: 	Ontogenic changes in the contents of dopamine, norepinephrine and serotonin in larvae and postlarvae of the bivalve Pecten maximus	
Autores: 	Cann Moisan, Christine; Nicolas, Laurence; Robert, Rene.	
Data: 	2002-11	
Ano: 	2002	
Palavras-chave: 	Pecten maximus; Metamorphosis; Post larvae; Larvae; Monoamines.	
Resumo: 	In the present study, norepinephrine (NE), epinephrine (E), dopamine (DA) and 5-hydroxy-tryptamine (5HT) have been quantified by high performance liquid chromatography (HPLC) in Pecten maximus during larval and post-larval development. With average values ranging from 2 to 5 pg mug(-1) of protein, NE remained low through the whole larval life, while epinephrine (E) was undetected. DA and 5HT were the most abundant monoamines with significant variations between larval, pre-metamorphic and post-larval stages. During the first 20 days, corresponding to D larval and umboned larval stages, levels of DA and 5HT increased from 15 to 30 and 10 to 15 pg mug(-1) of protein, respectively. Then during the last week of larval life, at the approach of metamorphosis, DA rose sharply from 30 to 50 pg mug(-1) of protein and 5HT from 15 to 50 pg mug(-1) of protein. Lastly during the first week of post-larval life (day 27 to day 34) DA and 5HT contents declined to levels similar to those detected in the first days of larval life reaching progressively 1 pg mug(-1) of protein during the second week of post-larval life (day 34 to day 55). These rapid and transient variations in monoamine contents (5HT and DA) around metamorphosis, present a great interest. However, this relation between neurochemical changes and metamorphosis must be confirmed with future studies in order to verify if such monoamines might be used as indicators of larval competence in P. maximus, a commercially important species.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/2002/publication-568.pdf

DOI:10.1016/S0990-7440(02)01185-3	
Editor: 	Elsevier	
Relação: 	http://archimer.ifremer.fr/doc/00000/568/	
Formato: 	application/pdf	
Fonte: 	Aquatic Living Resources (0990-7440) (Elsevier), 2002-11 , Vol. 15 , N. 5 , P. 313-318	
Fonte: 	2002 Éditions scientifiques et médicales Elsevier SAS