Zafer AYAŞ, Mehmet Levent AKSU, Hüseyin ÇELİKHAN

Lead (Pb) and copper (Cu) concentration in the eggshells of audouin's gulls (Larus audouinii) in Turkey

Ada martısı yumurta kabukları iki adacıktan (Karaburun - İzmir ve Aydıncık - Mersin) 2002-2003’de toplanmış ve kurşun (Pb) ve bakır (Cu) analizleri yapılmıştır. Yumurta kabuklarındaki ortalama Cu düzeyi, Aydıncık kolonisi için 1,855 ppm ve Karaburun kolonisi için ise 10,202 ppm saptanmıştır. Yumurta kabuklarındaki ortalama Pb düzeyi ise Aydıncık kolonisinde 0,954 ppm ve Karaburun kolonisinde 4,601 ppm saptanmıştır. Saptanan metal düzeyleri ada martısı populasyonlarında herhangi bir toksik etki oluşturacak düzeyde değildir. Bu çalışma, terkedilmiş yuvalardan toplanan ada martısı yumurta kabuklarının, ağır metal kontaminasyonunun izlenmesi için biyo-indikatör olarak kullanılabileceği fikrini vermiştir.

Türkiye'deki ada martılarının (Larus audouinii) yumurta kabuklarındaki kurşun (Pb) ve bakır (Cu) konsantrasyonu

Audouin’s gull (Larus audouinii) eggshells from 2 archipelagos (Karaburun-İzmir and Aydıncık-Mersin) in Turkey were collected between 2002 and 2003, and analyzed for lead (Pb) and copper (Cu) content. According to the results, mean Cu level of the eggshells was 1.855 ppm for the Aydıncık colony and 10.202 ppm for the Karaburun colony. Mean Pb level of the eggshells was 0.954 ppm for the Aydıncık colony and 4.601 ppm for the Karaburun colony. The detected metal levels did not seem to have any toxic effects on the Audouin’s gull populations. It is suggested that eggshells from abandoned nests of Audouin’s gulls may be useful as bio-indicators for monitoring heavy metal contamination.

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