Sedat KARAYÜCEL, Yalçın KAYA, İsmihan KARAYÜCEL

Sinop Bölgesinde Akdeniz midyesinin (Mytilus gallaprovincialis lamarck,1819) kondisyon faktörü ve biyokimyasal kompozisyonu üzerine çevresel faktörlerin etkisi

Araştırma süresince biyokimyasal kompozisyon, kondisyon faktörleri, su sıcaklığı, tuzluluk, askıdaki madde, klorofil-a ölçümleri bir yıl süre için yapılmıştır. Hacimsel olarak yaş et üzerinden hesaplanan kondisyon faktörü % 23,96-47,43 arasında değişmiş ve ortalama % 29,71 ± 1.99 bulunmuştur. Kuru et üzerinden tartımla hesaplanan kuru kondisyon faktörü ise % 3,94-8,17 arasında ve ortalama % 5,07 ± 0,31 olarak bulunmuştur. Ortalama nem oranı % 82,99 ± 0.43, kül % 6,7 ± 0,22, yağ % 8,75 ± 0,58, protein % 60,21 ± 1,47 ve karbonhidrat % 24,23 ± l ,72 olarak belirlenmiştir. Bu sonuçlara göre her iki kondisyon faktörünün maksimum olduğu ay Mart olarak tespit edilmiştir. Kondisyon faktörünün maksimum ve nemin minimum olduğu Mart ayında yağ oranı maksimum olarak tespit edilmiş ve proteinin maksimuma ulaştığı Şubat ayında karbonhidrat minimum olarak ölçülmüştür. Çevresel faktörler, kondisyon faktörü ve biyokimyasal kompozisyona ait parametrelerin etkileşimi tartışılmıştır. Midyelerin kondisyon faktörleri başlıca yem miktarından etkilenirken midyenin biyokimyasal kompozisyonu ile çevresel faktörler arasında net bir ilişki bulunmamıştır.

Effect of enviromental factors on biochemical composition and condition index in the medieterranean mussel (Mytilus gallaprovincialis lamarck,1819) in the Sinop region

Biochemical composition, condition indices, water temperature, salinity, seston, particulate organic matter and chlorophyll-a were monitored for 1 y. Wet meat volumetric condition index ranged from 23.96% to 47.43%, with a mean of 29.71 ± 1.99% . Mean dry weight condition index was 5.07 ± 0.3% and ranged from 3.94% to 8.17% . Mean moisture, ash, lipid, protein and carbohydrate values were 82.99 ± 0.43%, 6.7 ± 0.22% , 8.7 ± 0.58% , 60.21 ± 1.47%, and 24.23 ± 1.72%, respectively. Maximum values of condition indices were recorded in March. When condition indices and lipid values were maximum, moisture was minimum. Carboyhdrate was minimum when protein was maximum in February. The interaction of environmental factors, biochemical composition and condition indices are discussed. In general, the condition factors of mussels were affected by the amount of food, while there was no clear relationship between biochemical composition and environmental factors.

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