Sarıkum Lagün Gölü’ndeki (Sinop, Türkiye) yavru dere pisisi Platichthys flesus L., 1758 balığında görülen ektoparazitik siliatlar (Protozoa: Ciliophora)

Sinop Sarıkum Lagün’ünden Mayıs 2003 – Nisan 2004 tarihleri arasında her ay ığrıp çekilerek yakalanan yavru dere pisisi balığının, Platichthyes flesus L., 1758, epizoik siliatları belirlendi. Trichodina jadranica (Raabe, 1958) Haider, 1964; Trichodina domerguei Wallengren, 1897; Riboscyphidia sp.; Ambiphrya sp.; ve Vorticella sp. olmak üzere 5 epizoik siliat türü 296 adet yavru dere pisisi balığında tanımlandı. Bu türler arasında Trichodina jadranica dominat türdü. Beş epizoik siliatın enfeste balık başına ortalama yoğunluğu ve enfestasyon oranı mobil ve sesil siliatlar olmak üzere iki grup adı altında toplu olarak verildi. Mobil siliatlar yavru pisi balıkların solungaçlarında yaygın olarak bulunurken, sesil siliatlar yüzgeçlerinde bulundu. Mobil siliatlara ait en yüksek enfestasyon oranı ve yoğunluğu kış ve baharda kaydedildi. Diğer taraftan sesil siliatlar kışın gözlenmedi. Oluşturulan altı boy sınıf içinden en büyük boy sınıfında mobil siliatların yoğunluğu daha yüksek oranda bulundu. Bu çalışma Türkiye’deki yavru pisi balıklarının ektoparazitik siliatları üzerine ilktir. T. jadranica, Türkiye parazit faunası için yeni parazit kaydı iken, T. domerguei için yavru pisi balıkları yeni bir konak kaydıdır.

Anahtar Kelimeler:

Pisi balığı, Platichthys flesus, epizoik, trichodinidler, sesil siliatlar

The occurrence of epizoic ciliates (Protozoa: Ciliophora) of the juvenile flounder, Platichthys flesus L., 1758, from Sarıkum Lagoon Lake (Sinop, Turkey)

The occurrence of epizoic ciliates on the juvenile flounder, Platichthys flesus L., 1758, collected monthly by fishing net in Sinop's Sarıkum Lagoon Lake during the period from May 2003 to April 2004, was investigated. Five epizoic ciliate species, Trichodina jadranica (Raabe, 1958) Haider, 1964; Trichodina domerguei Wallengren, 1897; Riboscyphidia sp.; Ambiphrya sp.; and Vorticella sp., were found after examination of 296 juvenile flounder. Among these, T. jadranica was the dominant species. The prevalence and mean intensity values of the 5 epizoic ciliates were given as pooled data for 2 groups, namely mobiline ciliates and sessiline ciliates. Mobiline ciliates were commonly found on the gills of juvenile flounders, whereas sessiline ciliates were found only on fins. The highest prevalence and mean intensity levels of mobiline ciliates were recorded in the winter and spring seasons. Sessiline ciliates were absent in winter. The largest-sized juvenile flounder among the established 6 length classes had a higher intensity of mobiline ciliates. This study is the first on the epizoic ciliate fauna present on the juvenile flounder in Turkey. While T. jadranica is a new parasite record, the juvenile flounder is a new host record for T. domerguei in Turkey.

Keywords:

Key words: Flounder, Platichthys flesus, epizoic, trichodinids, sessiline ciliates,

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