NATURAL SCIENCES

Journal of fundamental
and
applied researches

The lead accumulating mechanism of the clams Meretrix lyrata seeding environment at Bach Dang estuary (Vietnam)

2017. 1, pp. 22-29

Truong Van Tuan - postgraduate student, Astrakhan State Technical University, 16 Tatishcheva Str., Astrakhan, 414056, Russian Federation, truongtuanvimaru@gmail.com

In the seashore environment, bottom feeding molluscs are the group which has been chosen by many scientists as the subject of research because of a high ability to biologically accumulate coupled with an immobile life, filtering organic mud. The plumbiferous pollutants from industry (harbour activities, marine traffic, building and repairing ships, ship breaking and other shoreline industrial areas), agriculture and other (human) activities. This toxic material accumulates in the organisms living at Bach Dang Estuary. One of the most commonly raised is the clams Meretrix Lyrata. The results of the research have shown that the lead accumulating mechanism of the clams farmed at Bach Dang Estuary distributes the lead into the meat and the stomach of the clam. The lead content in the on average three times higher the lead content of the clam meat. This accumulation of lead in the stomachs of the clams Meretrix Lyrata is related to the diet of the clams. The accumulation of lead in the clam meat tissues has a definite connection to lipid levels in the clams. The accumulation of lead in clams gradually increases throughout the growth of clams, affirming the role of lead in affecting clam biology.

Key words: , Meretrix lyrata, , , , feeding, content, molluscs, accumulation, biology

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