B. Compartiment Oursin (Paracentrotus lividus)………………..………………… 56
 Le mercure (Hg)……………………………………….…………..………… 58
 Le Plomb (Pb)……………………………………………………………….. 58
 Le zinc (Zn)………………………………..………….……..……………… 59
C. Bioconcentrations des ETM……………………………..………………………. 60
I.6. Discussion et observations générales ………………………………………………….. 62
Conclusion Générale……………………………………………..…….…… 64
Perspectives et Recommandations ……………………………….….……… 65
Bibliographie
Annexes