MUSTAFA SITKI BİLGİN, Esin ULUTURHAN SUZER

Homa Dalyanı'nda (İzmir Körfezi) dağılım gösteren Mytilus galloprovincialis ve Tapes decussatus (Bivalvia) türlerinde ağır metal birikimlerinin incelenmesi

Bu çalışmada, Homa Dalyanı'nda dağılım gösteren Bivalv türlerinden olan kara midye (Mytilus galloprovincialis) ve akivadesin (Tapes decussatus) yumuşak doku ve hepatopankreaslarında mevsimsel olarak (Mayıs 2013-Şubat 2014) nikel, mangan, kobalt, demir ve alüminyum (Ni, Mn, Co, Fe ve Al) yoğunlukları araştırılmıştır. Her iki türde de en yüksek ağır metal birikimleri hepatopankreasta saptanmıştır. Türler arası karşılaştırmaya bakıldığında, akivadesin yumuşak dokusundaki ağır metal seviyeleri daha yüksek bulunmuştur. Mevsimsel açıdan en yüksek ağır metal konsantrasyonları; kara midyede Şubat ayında, akivadeste ise Temmuz ayında tespit edilmiştir. Bu iki türde saptanan ağır metal seviyeleri, uluslararası alanda kabul edilen haftalık tüketim miktarı (PTWI) ile karşılaştırılarak sadece akivadeste Al seviyesinin limit değerini aştığı görülmüştür.

Assessment of heavy metal accumulation in Mytilus galloprovincialis and Tapes decussatus (Bivalvia) distributed in the Homa Lagoon (Izmir Bay)

In this study; the concentrations of nickel, manganese, cobalt, iron and, aluminum (Ni, Mn, Co, Fe, and Al) were determined seasonally in soft tissues and hepatopancreas of mussel (Mytilus galloprovincialis) and clam (Tapes decussatus) from the Homa Lagoon (May 2013-February 2014). According to interspecies comparison, metal concentrations were found higher in soft tissues of clams. The highest levels of metal were detected in hepatopancreas at both species. Also, the highest metal concentrations were found in February for mussel and July for clam. Detected metal levels in the bivalve species were compared with provisional tolerable weekly intake (PTWI) values and the maximum metal concentrations (except Al in clams) were found below these values.

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