Effect of heavy metal accumulation on the 96-h LC 50 values in tenc Tinca tinca L., 1758

Kadife balığında önceden birikmiş olan ağır metallerin (Hg, Cd, Pb), yine bu ağır metaller için incelenen 96 saatlik LCSO değerleri üzerindeki etkileri araştırılmıştır. Balığın vücudundaki Hg, Cd, ve Pb konsantrasyonları sırasıyla 0,011, 0,32 ve l .59 mg/g ve 96-saatlik LCSo değerleri ise l ,0, 6,5, 300 ppm şeklinde bulunmuştur. Bu ağır metallerin genel birikim sırası ve ilgili 96-saatlik LCSO değerleri Hg< Cd< Pb olarak bulunmuştur. Vücudunda en az ağır metal birikimi gösteren balıklar için 96-saatlik LC50 değerlerinin de düşük olduğu gözlenmiştir. Bu yakın ilişki, balığın vücudunda önceden birikmiş olan ağır metallerin ilgili 96-saatlik LC50 değerleri üzerinde direkt bir etkisi olduğunu göstermektedir.

Kadife balığı (Tinca tinca L., 1758)' nda biriken ağır metallerin 96-saat LC50 değerleri üzerine etkileri

The effects of already accumulated heavy metals (Hg, Cd, Pb) in the body of tench on the 96-h LCSO values of the respective heavy metals were studied. The body concentration of mercury, cadmium and lead was 0.011, 0.32 and 1.59 mg/g respectively, and their 96-h LC50 values were 1.0, 6.5 and 300.0, ppm, respectively. The general accumulation order of heavy metals and their respective 96-h LCSO values were Hg< Cd< Pb. It was observed that the fish with lowest body concentration of heavy metal showed the lowest 96-h LC50 value of the respective heavy metal and vice versa. This close relationship showed that the previous body accumulation of heavy metals has a direct effect on the 96-h LC50 values of the respective heavy metals and the susceptibility of fish.

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