Ahmet ÖZER, Turgay ÖZTÜRK, M. Oğuz ÖZTÜRK

Prevalence and intensity of Gyrodactylus arcuatus Bychowsky, 1933 (Monogenea) infestations on the three-spined stickleback, Gasterosteus aculeatus L., 1758

Ocak ve Mayıs 2000 tarihleri arasında yürütülen bu araştırmada, dikence balıkları (Gasterosteus aculeatus l., 1758) üzerinde Gyrodactylus arcuatus Bychowsky, 1933 türünün varlığı tespit edildi. Toplam olarak 151 adet balık incelendi. Ortalama enfestasyon oranı ve yoğunluğu, sırasıyla % 80,2 ve 35,44 ± 8,87 parazit / enfekte balık olarak belirlendi. Enfestasyon oranı (%) ve intensitesi sırasıyla Şubat ve Mayıs aylarında en yüksek değerlerinde kaydedildi. İstatistiki olarak, balığın cinsiyetine göre bir enfestasyon tercihi belirlenmedi. G. arcuatus'un enfestasyon intensitesi en fazla solungaçlar, ardından da yüzgeçler ve vücut yüzeyinde kaydedildi. Boy sınıfları dikkate alındığında, G. arcuatus'ün balığın vücut kısımlarındaki yayılışlarında önemli farklılıklar belirlendi.

Gyrodactylus arcuatus Bychowsky, 1933 (Monogenea) enfestasyonunun dikence balığı, Gasterosteus aculeatus L., 1758' deki oranı ve yoğunluğu

Gyrodactylus arcuatus Bychowsky, 1933 was identified on the three-spined stickleback, Gasterosteus aculeatus L, 1758 in the present study, which was carried out between January and May 2000. A total of 151 fish specimens were examined. The infestation prevalence and mean intensity levels were 80.2% and 35.44 ± 8.87 parasites per fish, respectively. The infestation prevalence and mean intensity levels were highest in February and May, respectively. No statistically significant preference for either sex of fish was determined. The mean intensity of G. arcuatus was highest on the gills, followed by the fins and skin. Significant differences were observed in the distribution of G. arcuatus over the body parts studied with respect to the length classes of fish.

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