INVESTIGADORES
LOVRICH Gustavo Alejandro
artículos
Título:
Baseline defense system of commercial male king crab Lithodes santolla from the Beagle Channel
Autor/es:
SCHVEZOV, NATASHA; LOVRICH, GA; ROMERO, MC
Revista:
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. A: COMPARATIVE PHYSIOLOGY.
Editorial:
ELSEVIER
Referencias:
Año: 2015 p. 18 - 26
ISSN:
0300-9629
Resumen:
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 antioxidant physiological variations
along the seasons is necessary for a better understanding of its
ecophysiology. The aim of 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 collaborative
way during the most relevant life cycle phases (reproduction and
molting), avoiding a long term oxidative stress. The antioxidant system
also shows changes in the enzymatic activities likely caused by the
environmental factors, such as low temperatures during winter and spring
seasons.