Balıkların kan parametreleri üzerine ağır metallerin etkisi

Ağır metaller boşaltım ortamlarındaki balıklar üzerinde, konsantrasyonları ile orantılı olarak toksik etki yaparlar. Bazı ağır metaller (krom, kadmiyum), besin zincirleriyle girdikleri canlı bünyelerinden atılamadıkları için balıklarda fizyolojik olarak birikime neden olurlar ve bünyede belirli sınır konsantrasyonların aşılması halinde toksik etki yaparlar ve hatta ölüme neden olabilirler. Bu birikim balıkların kan parametrelerine de etki eder ve fizyolojik bozukluklara neden olur. Bu makalede bakır, çinko, krom, kadmiyum ve cıva gibi ağır metallerin balıkların kan parametreleri üzerine etkileri, farklı yazarlar tarafından yapılan araştırmalardan yararlanılarak ortaya konulmuştur. Ağır metal konsantrasyonuna ve balıkların bunlara ne sureyle maruz kaldıklarına bağlı olarak kan indekslerindeki değişimler ile bunların fizyolojik ve ekolojik önemleri tartışılmıştır.

Anahtar Kelimeler:

akyuvarlar, magnezyum, cıva, çinko, potasyum, kan şekeri, kadmiyum, krom, alyuvarlar, hematokrit, laktat dehidrogenaz, alanin aminotransferaz, albümin, aspartat aminotransferaz, kan kimyası, kalsiyum, bakır, balık, hematoloji, hemoglobin, ağır metaller, sodyum

Heavy metal effects on fish blood parameters

Heavy metals releases to aquatic systems have toxic affect proportionally with their concentration on fish population health. Some heavy metals (chrome and cadmium) that enter the food chain are not discharged from fish and therefore are accumulated in their body. When they exceed a threshold concentration they may have a toxic effect or even cause death on fish. These accumulations have also an effect on fish blood and can cause physiological damage on fish. In this review article heavy metal effects on fish blood parameters, such as copper, zinc, chrome, cadmium, and mercury are discussed. Concentration level and exposure time effects on fish blood parameters are discussed in detail with respect to their physiological and ecological significance.

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