Biochemical Marker of Environmental Changes in Antarctic Animals: Screening of Energy Metabolism Enzymes of Nacella Concinna for Monitoring of Intertidal Environment of Admiralty Bay, King George Island.

e Antarctic limpet Nacella concinna inhabits the intertidal shores of Admiralty Bay. e activities of energy metabolism enzymes of this species were determined in order to evaluate their potential as biochemical markers of intertidal environment changes. e limpets were collected on February 2011 at six intertidal sites at Admiralty Bay: Ullman Point, Botany Point, Punta Plaza, Hennequin Point, Brazilian Refuge 2 and in front of the oil tank of Brazilian Antarctic Station Comandante Ferraz. e enzyme activities were undertaken on the gills and foot tissues of these limpets. ere were no signi cant di erences in the activities of malate dehydrogenase, lactate dehydrogenase and hexokinase from foot tissue and citrate synthase, phosphofrutokinase and glucose 6-phosphate dehydrogenase from gills in samples from the six sites. us, they are candidates for biochemical markers because these enzyme activities are not a ected by small genetic variations between populations, as well as small natural di erences in the environment.