Oxidative stress in oysters (Crassostrea corteziensis) exposed to naphthalene

• Main Authors: D G Mendoza-López, M I Girón-Pérez, C A Romero-Bañuelos, A E Rojas-García, B S Barrón-Vivanco, I M Medina-Díaz, M L Robledo-Marenco
• Format: Article
• Language: English
• Published: University of Modena and Reggio Emilia 2014-05-01
• Series: Invertebrate Survival Journal
• Subjects: naphthalene; oxidative stress; membrane stability; oyster; Crassostrea corteziensis
• Online Access: https://isj02.unimore.it/index.php/ISJ/article/view/315

Naphthalene is a frequent pollutant in aquatic ecosystems that can affect the physiology of organisms such as molluscs. Oyster Crassostrea corteziensis is an endemic species from the tropical West Pacific, with both ecological and economical importance. The objective of this study was to evaluate the oxidative damage in lipids and proteins in the tissue (gills and digestive gland), as well as the membrane stability in hemocytes of oysters C. corteziensis exposed to naphthalene (1 or 20 µg/L) sub-acutely (24 and 72 h). The results obtained indicate that under evaluated conditions, this hydrocarbon does not induce oxidation of lipids and proteins. However, the stability of the cell membrane of hemocytes diminished significantly in organisms exposed to 20 µg/L during 72 h. According to the obtained results, it can be suggested that stability of the hemocyte’s cell membrane is the most sensitive parameter to napthalene’s effect. It seems that compared to other hydrocarbons, naphthalene has low damage potential on oyster’s oxidative parameters.