Titre :

Acute toxicity, uptake and accumulation kinetics of nickel in an invasive copepod species: <i>Pseudodiaptomus marinus</i>

Auteur(s) :

Tlili, S. [Auteur correspondant]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Ovaert, J. [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Souissi, A. [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Ouddane, B. [Auteur]
Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516 [LASIRE]
Souissi, S. [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]

Titre de la revue :

Chemosphere

Pagination :

1729 - 1737

Éditeur :

Elsevier

Date de publication :

2016-02

ISSN :

0045-6535

Mot(s)-clé(s) en anglais :

Pseudodiaptomus marinus
Nickel
Isochrysis galbana
LC50%
Uptake
Bioaccumulation kinetics

Discipline(s) HAL :

Chimie/Chimie analytique
Planète et Univers [physics]/Interfaces continentales, environnement
Planète et Univers [physics]/Sciences de la Terre/Géochimie

Résumé en anglais : [en]

<i>Pseudodiaptomus marinus</i> is a marine calanoid copepod originating of the Indo-Pacific region, who has successfully colonized new areas and it was recently observed in the European side of the Mediterranean Sea as ...
Lire la suite ><i>Pseudodiaptomus marinus</i> is a marine calanoid copepod originating of the Indo-Pacific region, who has successfully colonized new areas and it was recently observed in the European side of the Mediterranean Sea as well as in the North Sea. Actually, many questions were posed about the invasive capacity of this copepod in several non-native ecosystems. In this context, the main aim of this study was to investigate the tolerance and the bioaccumulation of metallic stress in the invasive copepod <i>P. marinus</i> successfully maintained in mass culture at laboratory conditions since 2 years. In order to study the metallic tolerance levels of <i>P. marinus</i>, an emergent trace metal, the nickel, was chosen. First, lethal concentrations determination experiments were done for 24, 48, 72 and 96 h in order to calculated LC_50% but also to select a relevant ecological value for the suite of experiments. Then, three types of experiments, using a single concentration of nickel (correspond the 1/3 of 96 h-LC_50%) was carried in order to study the toxico-kinetics of nickel in <i>P. marinus</i>. Concerning lethal concentrations, we observed that <i>P. marinus</i> was in the same range of sensitivity compared to other calanoid copepods exposed to nickel in the same standardized experimental conditions. Results showed that the uptake of nickel in <i>P. marinus</i> depends from the pathways of entrance (water of food), but also that <i>Isochrysis galbana</i>, used as a food source, has an important bioaccumulation capacity and a rapid uptake of nickel.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Non spécifiée

Vulgarisation :

Non

Collections :

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

Source :

Harvested from HAL