Karadeniz Kalkan Balığı (Psetta Maxima Linnaeus, 1758) Yumurtası Yağ Asidi Kompozisyonunun Yumurta ve Larva Kalitesi Üzerine Etkisi

Bu çalışmada, Karadeniz kalkan balığında (Psetta maxima Linnaeus, 1758) yumurta kalitesini etkileyen faktörlerin belirlenmesi amaçlanmıştır. Yürütülen çalışmada 8 yaşında, 4 adet dişi Karadeniz kalkan balığının üreme döneminin farklı evrelerindeki yumurtaların, yağ asidi kompozisyonları, döllenme ve larva çıkış oranları karşılaştırılmıştır.Üreme sezonunun başı, ortası ve sonundaki yumurta partilerinin döllenme oranları sırasıyla, %54.91±5.90 , %60.36±1.61 , %71.69±1.56 olarak tespit edilmiştir. Larva çıkış oranları sırasıyla, %34.67, %42.22 ve %84.41 olarak belirlenmiştir. Döllenme ve larva çıkış oranları bakımından gruplar arasındaki farklar istatistiksel olarak önemli bulunmuştur (p<0.05). Toplam doymuş yağ asit (SAFA) miktarları sırasıyla, %23.65±0.44, %18.89±0.49 ve %22.77±0.56 olarak saptanmış, ilk ve orta partiler arasındaki farkın istatistiki olarak önemli olduğu belirlenmiştir (p<0.05). Toplam çoklu doymamış yağ asitleri (PUFA) miktarı sırasıyla %22.78±0.27, %20.44±0.30, %21.21±0.57 olarak tespit edilmiş ve partiler arasındaki farkın istatistiki olarak önemli olduğu (p<0.05) görülmüştür. Sonuç olarak partilerin yağ kompozisyonları arasındaki fark önemli olsa da bu parametre yumurta kalite kriteri olarak kullanılamayabilir. Ancak döllenme ve larva çıkış oranı sezon boyunca sürekli bir artış göstermiştir. Döllenme ve larva çıkış oranı sezon sonunda en yüksek olmasına rağmen yasama oranının sezon ortasında daha yüksek olduğu tespit edilmiştir. Bu sebeple, döllenme ve larva çıkış oranı yumurta kalite kriteri olarak değerlendirildiğinde sezon sonunda yumurtaların yüksek kalitedeki yumurtalar olduğu söylenebilir.

Anahtar Kelimeler:

Kalkan balığı (Psetta Maxima Linnaeus, 1758), Yumurta kalitesi, Yağ asidi kompozisyonu, Döllenme oranı, Larva çıkış oranı

The Effect of Fatty Acid Composition of Egg on Egg and Larval Quality of Black Sea Turbot (Psetta Maxima Linnaeus, 1758)

In this study, determination of the parameters that affect the egg quality of Black Sea turbot (Psetta maxima) was aimed. Therefore the fatty acid compositions, fertilization and hatching rate and survival rate of the eggs of different spawning seasons from 8-year old 4 captive Black Sea turbot were compared. Fertilization rates of first, middle and the end of the spawning seasons were determined as 54.91±5.90%, 60.36±1.61%, 71.69±1.56%. Hatching rates were determined as 34.67%, 42.22% and 84.41%. The differences between the spawning seasons were significant in terms of fertilization and hatching rates (p<0.05). Total saturated fatty acids (SFA) were calculated as 23.65 ± 0.44%, 18.89 ± 0.49% and 22.77 ± 0.56% in first, middle and last of the spawning seasons and the difference between first and the middle seasons were significant (p<0.05). Total polyunsaturated fatty acids were determined as 22.78 ± 0.27%, 20.44 ± 0.30%, 21.21 ± 0.57%, respectively and the differences between season were determined as statistically significant (p<0.05). As a result, when the fertilization and hatching ratios were considered as egg quality criteria, the eggs taken in the last season may have high quality.

Keywords:

Turbot (Psetta maxima), egg quality, fatty acid composition, fertilization rate, hatching rate,

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