Accumulation trends of metals and a metalloid in the freshwater crayfish Astacus leptodactylus from Lake Yenicaga (Turkey)

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Tunca E., Ucuncu E., KURTULUŞ B., Ozkan A. D., ATASAĞUN S.

CHEMISTRY AND ECOLOGY, cilt.29, sa.8, ss.754-769, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 29 Sayı: 8
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1080/02757540.2013.810724
  • Dergi Adı: CHEMISTRY AND ECOLOGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.754-769
  • Anahtar Kelimeler: bioaccumulation, bioindicator, cluster analysis (CA), correlation analysis, crayfish, heavy metal, principal component analysis (PCA), Lake Yenicaga, PROCAMBARUS-CLARKII, TRACE-ELEMENTS, PERSIAN-GULF, HEAVY-METALS, CADMIUM, COPPER, IRON, METALLOTHIONEIN, BIOACCUMULATION, ALUMINUM
  • Ankara Üniversitesi Adresli: Evet

Özet

This study aims to determine the extent of metal pollution in Lake Yenicaa (Bolu, Turkey) by investigating the accumulation trends of five metals (Al, Cu, Fe, Ni and Zn) and a metalloid (As) in gills, exoskeleton, hepatopancreas and abdominal muscles of the freshwater crayfish Astacus leptodactylus. Principal component analysis (PCA), cluster analysis (CA), correlation analysis and analysis of variance (ANOVA) were utilised to determine the accumulation profiles of each element over four seasons. The greatest element accumulation was found to occur in the gills. All elements in exoskeletal tissue displayed positive correlations with each other, a similar trend was also observed in the hepatopancreas samples. Strong (r=0.868) and very strong (r=0.960) positive correlations were found between the accumulations of Al and Fe in gills and the exoskeleton, respectively. Correlations in tissue accumulation rates are discussed in the context of metabolic roles and impacts associated with the elements tested. Elemental compositions of Yenicaa water and sediment samples were also investigated to determine whether the composition of the surrounding environment matches the metal accumulation trends of tissue samples. We demonstrate that, by the criteria set by the United States Environmental Protection Agency, Lake Yenicaa is heavily polluted in terms of As and Ni.