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An Investigation of the Leech (Hirudinea) Parasites on the Fish Species Inhabiting the Kovada Canal (Egirdir-Isparta) Abstract: This study was carried out to determine the parasitic leech infections, and weight and some morphometric features of leech (Hirudinea) parasites on the fish species inhabiting the Kovada Canal that connect Egirdir and Kovada Lakes. A total of 337 fish specimens, belonging to six different species ( Atherina boyeri Risso, 1810, Carassius gibelio (Bloch, 1782), Cyprinus carpio (Linnaeus, 1758), Pseudorasbora parva (Temminck & Schlegel, 1846), Sander lucioperca (Linnaeus, 1758) and Tinca tinca (Linnaeus, 1758)), were sampled for examine seasonally from October 2012 to November 2013. The mouth, skin, gills and fins of the fishes were examined and it was determined only Hemiclepsis marginata (OF Muller, 1774) on the 7 from 20 common carp ( C . carpio ) (prevalence: %35, mean intensity: 1, abundance: 0.35). The parasites were found in the pectoral fins, base of the pelvic and the anal fins, and the abdomen region. It could not determine any parasitic leech species without H. marginata in this study. The highest correlation was found between the total body length and the body length without the suckers (r: 0.998), and the lowest was found between the body length without suckers and the trachelosome width at the sucker junction (r: 0.653) in the examined H. marginata individuals. This study is the first report of H. marginata , the parasitic freshwater leech species, for the Mediterranean Region, Turkey. Key Words: Kovada canal, parasite, Hirudinea, Hemiclepsis marginata , morphometric features. Ozet: Bu calisma Egirdir ve Kovada Gollerini birbirine baglayan Kovada kanalinda yasayan baliklarin suluk (Hirudinea) parazitleri yonunden incelenmesi ve parazitlerin agirlik ve bazi morfometrik ozelliklerinin belirlenmesi amaciyla gerceklestirilmistir. Ekim 2012-Kasim 2013 tarihleri arasinda mevsimsel olarak yurutulen calismada alti farkli ture ( Atherina boyeri Risso, 1810, Carassius gibelio (Bloch, 1782), Cyprinus carpio (Linnaeus, 1758), Pseudorasbora parva (Temminck & Schlegel, 1846), Sander lucioperca (Linnaeus, 1758) ve Tinca tinca (Linnaeus, 1758)) mensup 337 adet balik orneklenmistir. Baliklarin agiz, deri, solungac ve yuzgeclerinde yapilan incelemede sadece sazan baliklarinda ( C . carpio ) suluk paraziti tespit edilebilmistir. Incelenen 20 adet sazan baliginin 7’sinde birer adet Hemiclepsis marginata (OF Muller, 1774) enfeksiyonu tespit edilmistir (prevalans: %35, ortalama enfeksiyon yogunlugu: 1, abundans: 0.35). Parazitlerin pektoral yuzgec, pelvik ve anal yuzgec kaidesi ile abdominal bolgede konumlandiklari belirlenmistir. H. marginata bireylerinin morfometrik ozelliklerinden en yuksek korelasyonun total vucut boyu ile cekmenler haric vucut boyu arasinda (r: 0.998), en dusuk korelasyonun ise cekmenler haric vucut boyu ile posterior cekmenle birlestigi noktadaki trachelosome genisligi arasinda (r: 0.653) oldugu tespit edilmistir. Bu calisma, parazitik tatlisu suluk turu H. marginata ’nin ulkemiz Akdeniz Bolgesi icin ilk kayit niteligi tasimaktadir. Anahtar Sozcukler: Kovada kanali, parazit, Hirudinea, Hemiclepsis marginata , morfometrik ozellikler. |
