İzmir Körfezi'nin ekolojik olarak stresli bölgelerinin toksisitesi

Antropojenik faaliyetler sonucunda çok yoğun bir şekilde kirli olduğu bilinen izmir Körfezi'nin su ve sedimentlerinin toksisitesi, Akdeniz'de dominant ekinoid türü olan deniz kestanesi Paracentrotus lividus (Lamarck, 1816) kullanılarak araştırılmıştır. Izmir Körfezi'nin İç Körfez bölümünden beş istasyondan alman su ve sediment örneklerine maruz kalan embriyolarda gelişim bozukluklarına bakılarak embriyotoksisite araştırılmıştır. Embriyogenezis süresince (zigot oluşumundan pluteus larval safhasına kadar) su ve sedimentlere maruz bırakılan embriyo ya da larvaların mikroskobik analizi sonucunda, kontrol istasyonuna nispeten yakın olan bir istasyon dışında diğer dört istasyonun hem su ve hem de sedimentlerinin deniz kestanesi üzerine embriyotoksik etkiye sahip olduktan saptanmıştır.

Anahtar Kelimeler:

Türkiye, su kirliliği, çökelti, Echinoidea, toksisite

Toxicity of ecologicaly stersfull areas of Izmir Bay

Toxicities of waters and sediments of Izmir Bay which is known as extensively polluted by anthropogenic activities were investigated using sea urchin, Paracentrotus lividus (Lamarck, 1816), the dominant echinoid species of the Mediterranean. Emryotoxicity was studied by assessing developmental defects in embryo exposed to waters and sediments were sampled five sites in inner part of Izmir Bay. In the results of microscopic analysis of larvae or embryos exposed to waters or sediments during emryogenesis (from zigot up to pluteus larval stage),except one site which was almost near reference site both water and sediments samples from other four sites were determined that they had embryotoxic effects on sea urchin.

Keywords:

Turkey, water pollution, sediment, Echinoidea, toxicity,

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