Trace metal concentrations in post-hatching cuttlefish Sepia officinalis and consequences of dissolved zinc exposure

摘要: In this study, we investigated the changes of 13 trace metal and metalloid concentrations (i.e. Ag, As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Se, V, Zn) their subcellular fractionation in juvenile cuttlefish Sepia officinalis reared controlled conditions between hatching 2-months post-hatching. parallel, metallothionein were determined. Our results highlighted contrasting studied metals. Indeed, As Fe measured hatchlings suggested a maternal transfer these elements cuttlefish. The non-essential Ag Cd presented highest accumulation during our correlated with digestive gland maturation. During 6 first weeks soluble fractions most essential metals slowly increased consistently progressive needs metabolism period. In order to determine for time cephalopod how distributions are impacted when exposed, previously described parameters juveniles exposed dissolved Zn at environmental 50 µg l-1) sublethal 200 levels. Moreover, oxidative stress glutathione S-transferases (GST), superoxide dismutase (SOD), catalase, lipid peroxidation (LPO)) was assessed gills after 1 2 months exposures. no or low ability stage life regulate all period, high sensitivity organism. Notably, exposures caused dose-dependent Mn depletion cuttlefish, an increase fraction Cu without modifications, suggesting substitution Cu) by Zn. decreased individuals Finally, perturbations management detected gills, whereas level modifications GST, SOD catalase activities recorded gland, resulting LPO content 6-week exposure concentration. Altogether, consistent towards underlined need study deeply contamination impact on animal life.