Baseline defense system of commercial king crabs Lithodes santolla from the Beagle Channel

• Published in: Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology
• Main Authors: Schvezov, Natasha, Lovrich, Gustavo Alejandro, Florentin, Olga Viviana, Romero, Maria Carolina
• Format: Article in Journal/Newspaper
• Language: English
• Published: Elsevier
• Subjects: Antioxidant; Biomarker; Decapod; Reactive Oxygen Species; Seasonal; Sub-Antarctic; https://purl.org/becyt/ford/1.6; https://purl.org/becyt/ford/1; Antarctic; Austral; Argentina; Gustavo; Romero; Antarc*
• Online Access: http://hdl.handle.net/11336/5444

Environmental and physiological variations influence the steady-state concentration of free oxygen radicals in cells. Because of the seasonal life cycle of Lithodes santolla in the Beagle Channel, a baseline study of the antioxi- dant physiological variations along the seasons is necessary for a better understanding of its ecophysiology. The aimof this study was to evaluate the seasonal variations in gills, hemolymph,muscle and hepatopancreas of the: i) enzymatic activities of superoxide dismutase, catalase, glutathione peroxidase and glutathione transferase; ii) ascorbic acid and total glutathione; iii) lipid peroxidation and protein oxidation; iv) glucose, proteins and pH. Seasonality found in the antioxidant defense system of L. santolla from the Beagle Channel acts in a collabo- rativeway during themost relevant life cycle phases (reproduction andmolting), avoiding a long termoxidative stress. The antioxidant systemalso shows changes in the enzymatic activities likely caused by the environmental factors, such as low temperatures during winter and spring seasons Fil: Schvezov, Natasha. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Lovrich, Gustavo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Florentin, Olga Viviana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina Fil: Romero, Maria Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina