Abstract

MAERO, E  and  ANGUIANO, O. L. Evaluation of oxidative stress biomarkers in cydia pomonella adults from different populations of Argentine Patagonia. Agriscientia [online]. 2018, vol.35, n.1, pp.35-42. ISSN 1668-298X.

In a natural environment living organisms are exposed to environmental prooxidant factors. In this study, antioxidant biomarkers were evaluated in adult codling moth Cydia pomonella from different field populations and from a laboratory strain. Field populations analyzed were from the provinces of Neuquén (Centenario), Río Negro (Allen, General Roca 1, General Roca 2, General Roca 3 y General Godoy) y Chubut (Sarmiento 1 y Sarmiento 2). The levels of antioxidants were evaluated, for both enzymatic antioxidants such as catalase (CAT), superoxide dismutase (SOD) and glutathione S-transferase (GST) and non-enzymatic, endogenous glutathione (GSH). GST activity found in all field populations were significantly lower than in the laboratory strain. CAT activity in General Roca 1 population turned 2.13 times lower than that from the reference strain. No significant differences in SOD activity were observed between different populations. GSH levels observed in Sarmiento 2 codling moths were significantly different and rise 1.57 times higher than the laboratory ones. Except for General Godoy, all field populations tested had significantly lower GSH levels compared with the laboratory strain. Alterations in GST and GSH biomarkers could indirectly reflect the presence of oxidative stress.

Keywords : Codling moth; Biomarkers; Glutathione S-transferase; Catalase; Superoxide dismutase; Reduced glutathione.

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