Temporal Changes in Concentrations of Some Trace Elements in Muscle Tissue of Crayfish,Astacus leptodactylus(Eschscholtz, 1823), from Keban Dam Lake

Onder Aksu,Veysel Demir,Mustafa Ates,Ragip Adiguzel,Safak Seyhaneyildiz Can,Durali Danabas,Sebahat Seker,Numan Yildirim

doi:10.1155/2014/120401

Onder Aksu, Veysel Demir + Show 6 more

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https://doi.org/10.1155/2014/120401

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Abstract

Crayfish (Astacus leptodactylus Eschscholtz, 1823) is the native crayfish species in Turkey. It was exported regularly to Western Europe. In this study, bioaccumulation and temporal trends of some trace elements (arsenic: As, cadmium: Cd, copper: Cu, mercury: Hg, lead: Pb, and zinc: Zn) in edible abdomen muscle of crayfish from Keban Dam Lake (Elazığ, Turkey) were investigated for the 2006–2012 period. Sequence of metal concentration levels was Zn > Cu > Hg > Pb > Cd > As in muscle tissues. The highest concentration of Zn (21.69 mg kg−1) was detected in 2006, while the lowest (4.35 mg kg−1) in 2009. In general, it was found that the concentrations of trace elements investigated were lower than the maximum permissible limits of the food regulations of the Ministry of Food, Agriculture, and Livestock (MFAL), the Turkish Food Codex and Commission Regulation (EC). If the crayfish selected for the study are recognized as bioindicators of environmental pollution, then it is possible to conclude that the changes in studied trace elements concentrations in the Keban Dam Lake are being steady.

Highlights

Many pollutants including trace elements are released from natural and anthropogenic sources into aquatic environments [1, 2]. Accumulation of these elements in sediments, aquatic biota, and edible aquatic organisms is an important concern, because they are involved in food chain and affect most important reactions in living organisms, even at low concentrations [1, 3, 4]
Copper can enter the environment through waste dumps, domestic waste water, combustion of fossil fuels and wastes, wood production, phosphate fertilizer production, and natural sources
Cadmium can accumulate in aquatic organisms and agricultural crops

Summary

Introduction

Many pollutants including trace elements are released from natural and anthropogenic sources into aquatic environments [1, 2]. Accumulation of these elements in sediments, aquatic biota, and edible aquatic organisms is an important concern, because they are involved in food chain and affect most important reactions in living organisms, even at low concentrations [1, 3, 4]. Copper can enter the environment through waste dumps, domestic waste water, combustion of fossil fuels and wastes, wood production, phosphate fertilizer production, and natural sources. Cadmium (Cd) is emitted to soil, water, and air by nonferrous metal mining and refining, manufacture and application of phosphate fertilizers, fossil fuel combustion, and waste incineration and disposal.

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