Tissue distribution and redistribution of trace elements in shrimp species with the emphasis on the roles of metallothionein.

This review is focused on distribution and redistribution of trace elements in various tissues of different shrimp species, especially genus Penaeus. The possible roles of metallothionein in this regard are emphasized. Factors affecting heavy metals uptake and distribution have also been reviewed separately. Moreover, patterns of metals bioaccumulation and their order of occurrence have been evaluated. Another part of this paper deals with comparison of the related data from different aquatic environments as well as existing guidelines and limits for human consumption. Generally, the number of conducted studies in some related context, especially in the case of possible roles of metallothionein during storage of organisms is very limited.