Effect of zinc sacrificial anode degradation on the defence system of the Pacific oyster, Crassostrea gigas: Chronic and acute exposures

Physiological perturbations in juvenile cuttlefish Sepia officinalis induced by subchronic exposure to dissolved zinc

“…This result further supports the high sensitivity of juvenile cuttlefish in comparison to the fresh water crustacean Daphnia magna (3-week LC 50 = 840 lg l À1 ; Enserink et al, 1991), and to adult and juvenile stages of C. gigas which 7-week exposure at concentrations above 500 lg l À1 did not induce mortality (Devos et al, 2012;Mottin et al, 2012). Our data suggest the existence of a Zn lethality threshold in juvenile cuttlefish.…”

“…To the best of our knowledge, the only study focused on the Zn-impact on PO in a mollusc in vivo reported a similar decrease in C. gigas plasma after 1-week exposure to non-lethal and lethal Zn-concentrations of 530 and 10,200 lg l À1 , respectively (Mottin et al, 2012). However, in the same study the authors reported an activity increase from 2-until 7-week exposure at 530 lg l À1 , which was not observed in our study.…”

Impact of Galvanic Anode Dissolution on Metal Trace Element Concentrations in Marine Waters

“…The few studies about Al and Zn seawater contamination impacts on marine organisms have always highlighted a range of sub-lethal effects, including reduced swimming, feeding, growth and reproduction performance, bioaccumulation, and digestive stress (Baker et al 2014;Caplat et al 2010;Mao et al 2011;Mottin et al 2012;Nadella et al 2013;Taylor et al 1985). Due to these incidences, numerous environmental quality standards for Al and Zn in seawaters have been proposed.…”

“…Metals may be released as dissolved species or as particles of solid phase. Once released, these metals could diffuse and contaminate surrounding waters or may be accumulated in the suspended particle matter (SPM), sediments, and biota (Caplat et al 2010;Gabelle et al 2012;Leleyter et al 2007;Mao et al 2011;Mottin et al 2012;Rousseau et al 2009).…”

“…Consequently, metal inputs from anode dissolution could be significant in these environments, causing potential ecological damage (Jelmert et al 2000;Mao et al 2011). However, the fate of metals from anode dissolution in the marine environment is not well characterized and has been poorly studied (Bird et al 1996;Caplat et al 2010;Gabelle et al 2012;Leleyter et al 2007;Mao et al 2011;Mottin et al 2012;Rousseau et al 2009).…”