A. Suat ATEŞ, Tuncer KATAĞAN, Murat Sezgin, Seçil AÇAR

The Response of Apseudopsis latreillii (Milne-Edwards, 1828) (crustacea, tanaidacea) to environmental variables in the Dardanelles

Tanaid, Apseudopsis latreillii (Milne- Edwards, 1828) Akdeniz Ekosisteminin yumuşak zeminlerindeki yaygın bir krustase türüdür ve hem temiz hem de kirli çevrelerde ortaya çıkar. Bu çalışmanın amacı Çanakkale Boğazınınyumuşak zeminlerinde gözlenen çevresel değişkenlere tanaid, A. latreilleinin duyarlılık durumunu belirlemektir. İstasyonlardaki A. latreillii bolluğu çalışma alanında sedimentteki organik madde ve çevresel değişkenler karşılaştırılarak analiz edilmiştir. Çalışma boyunca toplam 1406 Apseudopsis latreillii bireyi kaydedilmiştir. A. latreillii nin en yüksek baskınlık değeri (b=%30,37) sedimentteki organik madde miktarının %25,50±12,09 olduğu Kepez Limanı için bulunmuştur. Örnekleme mevsimlerine göre en yüksek baskınlık değeri Ağustos 2008 (organik madde %21,7±7,99) için %56,75ti. Sedimentteki en yüksek kum oranı (%99,59) Eceabat örnekleme noktasında bulunmuştur. En yüksek pozitif ilişki (r=0.349, P

Çanakkale Boğazı ndaki çevresel değişkenlere Apseudopsis latreillii (Milne- Edwards, 1828) (crustacea, Tanaidacea) nin tepkisi

The tanaid, Apseudopsis latreilli (Milne- Edwards, 1828) is a common crustacean species on the soft bottoms of the Mediterranean ecosystems and occurs in both clean and polluted environments. This study was aimed to determine the sensitive state of tanaid, A. latreilli to the environmental variables observed on the soft bottoms of the Dardanelles. A. latreillei abundance at the sites was analysed in comparision with the organic matter content in sediment and the environmental variables in the study area. A total of 1406 specimens of A. latreillii was recorded during the study. The highest dominance value (Di=30.37%) was for Kepez Harbour where the amount of organic matter was 25.50±12.09% in the sediment. The highest value of dominance according to the sampling seasons was 56.75% for Autumn 2008 (organic matter=21.7±7.99%). The highest sand rate (99.59%) in the sediment was found at the Eceabat sampling point. The highest positive correlation (r=0.349, P<0.05) was observed between gravel content (%) measured at the sites and total abundance (ind.0.09 m-2).

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