Title: Natural adaptation to the environmental conditions affects the oxidation-dependent processes in limpets
Authors: Paula Mariela González; Susana Puntarulo; Gabriela Malanga
Addresses: Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Fisicoquímica, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Buenos Aires, C1113AAD, Argentina ' Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Fisicoquímica, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Buenos Aires, C1113AAD, Argentina ' Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Fisicoquímica, Buenos Aires, Argentina; CONICET-Universidad de Buenos Aires, Instituto de Bioquímica y Medicina Molecular (IBIMOL), Buenos Aires, C1113AAD, Argentina
Abstract: Exploitation of benthonic resources is an important fraction within the craft catch. The main objective of this work was to obtain information on the oxidative condition and tissue damage in gills of the limpets Nacella deaurata and N. magellanica with subtidal and intertidal natural habitats, respectively. No significant differences were observed between the two species in the carbohydrates, lipids, proteins and ashes content. Ascorbyl radical and lipid radical contents were higher in N. deaurata compared to N. magellanica (224% and 3.5-fold, respectively). However, catalase and superoxide dismutase activities were significantly higher in N. magellanica than in N. deaurata. These data suggested that in the intertidal species, which is exposed to extreme conditions, antioxidant activity is responsible for preventing lipid damage. Thus, organoleptic characteristics are improved, and conservation and handling stress could be prevented in intertidal compared to subtidal species. These studies would contribute to the sustainable management of valuable native species.
Keywords: limpets; oxidative damage; ascorbyl radical; lipid radicals; antioxidants; catalase; superoxide dismutase; biochemical composition; natural marine environments; craft catch; electron paramagnetic resonance.
DOI: 10.1504/IJENVH.2017.088119
International Journal of Environment and Health, 2017 Vol.8 No.4, pp.302 - 315
Received: 12 Aug 2016
Accepted: 24 Feb 2017
Published online: 24 Nov 2017 *