Effects of 16 pure hydrocarbons and two oils on haemocyte and haemolymphatic parameters in the Pacific oyster, Crassostrea gigas (Thunberg).

• Published in: Toxicology in Vitro
• Main Authors: Bado-Nilles, Anne, Gagnaire, Béatrice, Thomas-Guyon, Hélène, Le Floch, Stéphane, Renault, Tristan
• Other Authors: Laboratoire de Ploufragan - Plouzané, Agence nationale de sécurité sanitaire de l'alimentation, de l'environnement et du travail (ANSES), Service de Recherche et d'Expertise sur les Risques environnementaux (IRSN/PRP-ENV/SERIS), Institut de Radioprotection et de Sûreté Nucléaire (IRSN), LIttoral ENvironnement et Sociétés (LIENSs), La Rochelle Université (ULR)-Centre National de la Recherche Scientifique (CNRS), Centre de documentation de recherche et d'expérimentations sur les pollutions accidentelles des eaux (Cedre), Cedre, Unité Amélioration génétique, Santé animale et Environnement (AGSAE), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2008
• Subjects: MESH: Crassostrea; MESH: Animals; MESH: Dose-Response Relationship; Drug; MESH: Hemocytes; MESH: Hemolymph; MESH: Oils; MESH: Phagocytosis; MESH: Polycyclic Hydrocarbons; Aromatic; MESH: Time Factors; MESH: Water Pollutants; Chemical; [SDV.EE]Life Sciences [q-bio]/Ecology; environment; Pacific; Crassostrea gigas; Pacific oyster
• Online Access: https://hal.science/hal-00770986; https://doi.org/10.1016/j.tiv.2008.04.011

International audience The in vitro effects of polycyclic aromatic hydrocarbons (PAHs) on haemocyte and haemolymphatic parameters of the Pacific oyster, Crassostrea gigas, were tested using field concentrations (10(-7) and 10(-9) mg mL(-1)) observed in the Marennes-Oleron Basin (Charente-Maritime, France) and high concentrations (10(-3) and 10(-5) mg mL(-1)) observed during oil spills. As a first step, the effects of pollutants, after a 24 h contamination period, were monitored on individual and pooled haemolymph samples and similar results were observed for both sample types. In a second step, haemolymphs from 45 oysters were withdrawn and pooled. Eighteen pollutants were tested in vitro after a 4 and 24h contamination period and 10 of them showed significant modulations of the five haemocyte parameters tested. Seven pollutants (fluorene, pyrene, anthracene, phenanthrene, chrysene, indeno[1,2,3-c,d]pyrene and heavy fuel oil (HFO)) induced a decrease in haemocyte mortality. Fluorene, pyrene and HFO significantly decreased phagocytosis activity. Percentage of non-specific esterase positive cells, phenoloxidase activity and lysosome presence were increased by naphthalene, benzo[b]fluoranthene and dibenz[a,h]anthracene, respectively. Modulation of immune parameters in the Pacific oyster by PAHs suggested that PAH pollution may be related to enhanced susceptibility to diseases.