Titre :

Effects of salinity and temperature on the expression of enzymatic biomarkers in Eurytemora affinis (Calanoida, Copepoda)

Auteur(s) :

Cailleaud, K. [Auteur]
Stress Environnementaux et BIOsurveillance des milieux aquatiques [SEBIO]
Maillet, G. [Auteur]
Stress Environnementaux et BIOsurveillance des milieux aquatiques [SEBIO]
Budzinski, H. [Auteur]
Laboratoire de Physico et Toxico-Chimie des systèmes naturels [LPTC]
Souissi, S. [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Forget-Leray, J. [Auteur]
Stress Environnementaux et BIOsurveillance des milieux aquatiques [SEBIO]

Titre de la revue :

Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology

Pagination :

841-849

Éditeur :

Elsevier

Date de publication :

2007-08

ISSN :

1095-6433

Résumé en anglais : [en]

In order to establish effective enzymatic biomarkers that could provide in situ early warning of contaminant exposure in estuarine ecosystems, the potential effects of the principal abiotic factors (temperature and salinity) ...
Lire la suite >In order to establish effective enzymatic biomarkers that could provide in situ early warning of contaminant exposure in estuarine ecosystems, the potential effects of the principal abiotic factors (temperature and salinity) were investigated on common biomarkers, the acetylcholinesterase (AChE) and the glutathione S-transferase (GST) in Eurytemora affinis. Short term salinity stress effects simulated during an experimental tide indicated that enzymatic activities of this species are characterized by maximum expression related to an optimal salinity range (between 5 and 15 psu). Moreover, longer time exposure to various salinity tanks confirmed the effects of this factor on both AChE and GST activities. Therefore, optimal AChE activity was measured at 10 psu, while optimal GST activity was measured at 5 psu. Furthermore, significant effects of temperature were also recorded, particularly for AChE expression (slight effects were measured on GST expression) with an optimal condition at 11 °C. These experiments indicated a more pronounced effect of salinity over temperature especially on the AChE expression and confirmed the need to standardize sampling procedures in relation with environmental parameters for biomonitoring studies based on enzymatic analyses.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL

Date de dépôt :

2024-02-05T03:19:33Z