İlhan AYDIN, Ercan KÜÇÜK, TEMEL ŞAHİN, Metin KUMLU

Effect of Temperature on Reversed Asymmetry in Hatchery-Reared Flounder(Platichthys flesus luscusPallas, 1811)

Bu çalışmada, kuluçkahane üretimi pisi balığı (Platichthys flesus luscus) larvalarının larval gelişimi ve sola bakışlılığı (ters asimetri) üzerine dört farklı sıcaklığın (15°C, 18°C, 21°C, 24°C) etkisi araştırılmıştır. Sola bakış oranı 15°C, 18°C, 21°C ve 24°C sıcaklıklar için sırasıyla %13.0, %10.4, %11.6 ve %21.3 bulunmuştur. Sola bakış oranı 24°C'de önemli derecede yüksek (P

Kültür Pisi Balıklarında (Platichthys flesus luscus Pallas, 1811) Ters Asimetri (Sola Bakışlılık Oranı) Üzerine Sıcaklığın Etkisi

The effects of four different rearing temperatures (15, 18, 21 and 24ºC) on reversed asymmetry and larval development in the hatchery-reared larvae of the flounder, Platichthys flesus luscus, were investigated in this study. Incidence of reversed asymmetry (sinistral forms) were found to be 13.0, 10.4, 11.6 and 21.3% at 15, 18, 21 and 24ºC, respectively. The sinistrality rate was not affected by temperature between 15°C and 21°C, while this incidence was significantly higher at 24°C (P<0.05). At completion of the metamorphosis (day 60), juvenile final total length and survival rates were 18.4, 19.9, 18.8, 15.7 mm and 13.5, 9.0, 10.6, 9.2% at 15, 18, 21 and 24°C, respectively. The results of the present study strongly suggest that rearing temperature not only influences growth and survival during the larval development but also reversed asymmetry in the flounder at the metamorphosis, especially at high temperatures

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