Serdar YEDİER, Derya BOSTANCI, Seda KONTAŞ, Gülşah KURUCU, Nazmi POLAT

Akdeniz'de İki Farklı Solea solea Popülasyonunda Otolit Kütle Asimetrisinin Karşılaştırılması

Su kirliliği genel olarak okyanuslar, denizler, nehirler, göller ve yeraltı suları gibi su kaynakları üzerinde doğal ve insan faaliyetleri sonucu oluşmuş bir tür kirlilik olarak adlandırılabilir. Su kirliliği balık türlerini doğrudan ve dolaylı olarak olumsuz etkilenmektedir. Sucul sistemdeki diğer canlılar gibi balıklar da habitatlarında bulunan pestisitler, insektisitler ve herbisitler ve ağır metaller gibi farklı kirleticilerden kaynaklı farklı stres türleriyle karşı karşıyadır. Otolit kütle asimetrisinin, balıklarda çevresel stresin neden olduğu bazı gelişimsel bozuklukları yansıtabilir. Özellikle yüksek seviyedeki otolit kütlesi asimetrisi balıkların yaşamını olumsuz yönde etkileyebilir, bu nedenle bu asimetrinin belirlenmesi her balık türü için çok önemlidir. Bu çalışmanın amacı Mersin ve İskenderun popülasyonlarındaki Solea solea'nın otolit kütle asimetrilerini karşılaştırmaktır. Total boyları 17,5-25,0 cm ve ağırlıkları 36,4-126,6 gr olan toplam 100 adet balık Akdeniz'den yakalanmıştır. Asimetri, kör ve göz bölge otolitlerinin kütleleri arasındaki fark dikkate alınarak hesaplanmıştır. Bu çalışmanın sonucunda, asimetri değerleri, bu iki popülasyonda -0,25483 ve +0,41220 değerleri arasında bulunmuştur. Mersin ve İskenderun popülasyonlarındaki Solea solea'nın otolit kütle asimetrisi ve mutlak otolit kütle asimetrisi, balıkların total boyuyla ilişkili değildir.

Anahtar Kelimeler:

Otolith, Kütle asimetrisi, Solea solea, Ekolojik faktörler, Su kirliliği

Comparison of Otolith Mass Asymmetry in Two Different Solea solea Populations in Mediterranean Sea

In general, water pollution can be called as a kind of pollution resulting from natural and human activities on water resources such as oceans, seas, rivers, lakes and ground waters. Fish species are directly and indirectly adversely affected by water pollution. Like other living things in the aquatic system, fish are confronted with different types of stresses from different pollutants such as pesticides, insecticides, herbicides and heavy metals in their habitats. Otolith mass asymmetry may reflect some developmental disorders of fish caused by environmental stress. Especially high-level otolith mass asymmetry can adversely affect fish life, so the determination of the asymmetry is very important for each species. The aim of the present study to compare the otolith mass asymmetry of Solea solea from Mersin and İskenderun populations. A total of 100 fish with 17.5-25.0cm total length and 36.4-126.6g weight were collected from the Mediterranean Sea. The asymmetry was calculated considering the difference between blind and eye sides otolith masses. In the present study, the asymmetry values were found within -0.25483 and +0.41220 in the populations. The otolith mass asymmetry and absolute otolith mass asymmetry of S. solea in the Mersin and İskenderun populations are not related to the total length

Keywords:

Otolith, Mass asymmetry, Solea solea, Ecological factors, Water pollution,

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