Nijerya’nın Kwara Eyaletindeki İki Toprak Barajından (Asa ve Ilorin Üniversitesi Barajları) Elde Edilen Clarias gariepinus (Burchell, 1822) Dokularında Ağır Metal Kirliliği

Yıl 2019, Cilt: 8 Sayı: 1, 26 - 32, 01.07.2019

Musa İdi-ogede Abubakar İbrahim Adeshına

https://doi.org/10.31196/huvfd.590900

Cited By: 4

Öz

Bu çalışmada, Nijeryanın
Kwara Eyaletindeki iki barajdan (Asa ve Ilorin Üniversitesi), elde edilen Clarias gariepinus türü balıkların
dokularındaki ağır metal kirlenme seviyeleri belirledi. Ortalama 149-154 g
ağırlık ile toplam uzunluk 28-34 cm arasındaki erkek ve dişi balık örnekleri
Eylül-Aralık 2018 ayları arasında toplanmıştır. İki barajdan elde edilen
örneklerin et, kalp, böbrek ve karaciğerlerindeki bakır (Cu), çinko (Zn),
kadmiyum (Cd), krom (Cr) ve kurşun (Pb) düzeyleri Atomik Absorpsiyon Spektrofotometresi
(AAS) kullanılarak belirlendi. Sonuçlar, Asa ve Unilorin barajlarından
örneklenen dokulardaki ağır metal kontaminasyonunun, Çinko> Bakır> Krom
şeklinde olduğunu gösterdi. Kadmiyum ve kurşun tespit edilmedi. Ayrıca, Asa
barajından elde edilen C. gariepinus örneklerindeki
ağır metal konsantrasyonlarının, Unilorin barajından alınan örneklerden daha
yüksek olduğu belirlenmiştir. Vücut ağırlığı, toplam uzunluk ve yaş daha yüksek
ağır metal düzeyine yatkınlığa neden olurken, cinsiyet ağır metal düzeyini
etkilememiştir. İki barajdan alınan C.
gariepinus örneklerinde tespit edilen ağır metal konsantrasyonu, WHO ve FAO
tarafından belirlenen sınırları aşmamıştır. Bu nedenle bu barajlardan elde
edilen balıkların insan tüketimi için sağlıklı olduğu kanaatine varılmıştır.

Anahtar Kelimeler

Ağır metaller, Et, Kalp, Toksik Metaller, Balık

Heavy Metals Contamination in the Tissues of Clarias gariepinus (Burchell, 1822) Obtained from Two Earthen Dams (Asa and University of Ilorin Dams) in Kwara State of Nigeria

Öz

This study determined the levels of heavy
metals contamination in the tissues of 400 Clarias gariepinus obtained from two dams (Asa and University of
Ilorin) in Kwara State of Nigeria. C.
gariepinus, (both male and female) between the mean weight of 149-154g and
total length of between 28-34cm were investigated between the month of
September and December, 2018.  Copper (Cu), zinc (Zn), cadmium (Cd), chromium (Cr)
and lead (Pb) in flesh, heart, kidney and livers of species from the two dams
were determined using Atomic Absorption Spectrophotometer (AAS). The results showed that heavy metals contamination in
the tissues sampled from Asa and Unilorin dams were in order of Zinc >
Copper > Chromium. Cadmium and lead were not detected. Furthermore, C. gariepinus from Asa dam bioaccumulated heavy metals at higher
concentrations than samples from Unilorin dam. Body weight, total length and
age were found to be predisposing factors to heavy metals concentrations in the
body of fish while sexes had no effect.The heavy metals concentration detected in C. gariepinus sampled from the two dams
did not exceed the limits set by WHO and FAO suggesting that the fishes
wholesome for human consumption.

Anahtar Kelimeler

Heavy metals, Flesh, Heart, Toxic metals, Fish

Kaynakça

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