BIOCHEMICAL MODIFICATION IN AN EDIBLE MOLLUSK (DONAX TRUNCULUS) DURING TRANSPLANTATION INTO A POLLUTED ENVIRONMENT

摘要

The gulf of Annaba (East Algeria) has observed markedly increased levels of various pollutants.The objective of the current study was to examine the impact of these anthropogenic activities on the biochemical composition of an edible mollusk Donax trunculus.Thus,the levels of main biochemical constituents (proteins,carbohydrates,lipids) were measured 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) during 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 starting 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 environment at Sidi Salem site mainly by heavy metals affects the energy reserves of this mollusk species.