BOUKARI Asma2022-11-302022-11-302021-12-22https://dspace.univ-annaba.dz//handle/123456789/703The gulf of Annaba (East Algeria) has observed markedly increased levels of various pollutants. The objective of the current study was to examine the im pact of these anthropogenic activities on the bio chemical composition of an edible mollusk Donax trunculus. Thus, the levels of main biochemical con stituents (proteins, carbohydrates, lipids) were meas ured at various times during a transplantation from a reference site (El Battah) to a contaminated site (Sidi Salem) for 21 days. Biochemical analyzes indicate changes at different times (0, 7, 14 and 21 days) dur ing the transplantation period. At day 0, the levels of both carbohydrates, lipids and proteins from El Bat tah individuals were significantly higher compared to those from Sidi Salem. During transplantation, we notice comparable levels in transplanted individuals (El Battah to Sidi Salem) to those of Sidi Salem start ing day 7 for proteins and day 14 for lipids and only at day 21 for carbohydrates, respectively. A two-way ANOVA (time, site) revealed significant effects of time, site. Conclusively, the contaminated environ ment at Sidi Salem site mainly by heavy metals af fects the energy reserves of this mollusk speciesfr