Ali İLHAN, Hasan M. SARI, Süleyman BALIK, M. Ruşen USTAOĞLU

Distribution and ecology of freshwater Ichthyofauna of the Biga Peninsula, North-Western Anatolia, Turkey

Bu araştırma Biga yarımadası akarsularının tatlisu ihtiyofaunasini ve komunite özelliklerini belirlemek amacıyla 2000-2001 yılları ilkbahar ve yazın 16 farklı akarsuda 35 istasyonda yapıldı. Ayrıca, akarsulara ait bazı fiziksel ve kimyasal parametreler de yerinde saptandı. Bölgede 5 familyaya ait 14 taksa belirlendi. Bunlardan Leuciscus cephalus, Petroleuciscus borysthenicus, Rhodeus amarus, Phoxinus phoxinus, Chalcalburnus chalcoides. Barbus tauricus escherichi. Gobio gobio, Capoeta capoeta bergamae, Vimba vimba, Cobitis fahirae ve Neogobius fluviatilis Biga yarımadasından ilk kez kaydedildi. Çalışma alanında en yaygın tür L. cephalus olduğu belirlendi. Akarsulardaki balık komüniteleri analiz edildiğinde, %50 benzerlik seviyesinde üç farklı grup oluştuğu saptandı. Büyük akarsuların tür çeşitliliği açısından en zengin habitatları oluşturduğu belirlendi.

Biga Yarımadası'nın tatlısu ihtiyofaunasının dağılımı ve ekolojisi, Kuzey-Batı Anadolu, Türkiye

This research was carried out at 35 stations in 16 different streams on the Biga Peninsula during the spring and summer of 2000 and 2001 to determine the freshwater ichthyofauna and community features. In addition, some physical and chemical parameters of the streams were determined in their natural environment. Fourteen taxa belonging to 5 families were determined. Leuciscus cephalus, Petroleuciscus borysthenicus, Rhodeus amarus, Phoxinus phoxinus, Chalcalburnus chalcoides, Barbus tauricus escherichi, Gobio gobio, Capoeta capoeta bergamae, Vimba vimba, Cobitis fahirae and Neogobius fluviatilis are recorded for the first time from the Biga Peninsula. The most abundant species in the study area was L. cephalus. Fish communities in the streams were analysed, where 3 different groups were formed at a level of 50% similarity. Larger streams are determined to be the richest habitats in terms of species diversity.

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