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Abstract

Mussel culture was practiced in the raft system in Sinop area, Black Sea, from May 2005 to May 2006. One-year old rope grown mussel with a mean length of 40.28±0.51 mm and a mean live weight of 6.06±0.20 g were stocked in nylon socks, and suspended from the raft system. Effects of environmental factors including temperature, salinity, chlorophyll a, seston, particulate inorganic matter and particulate organic matter on some growth parameters were monitored during the experimental period. At the end of the experimental period, the mean mussel shell length was 58.86±2.81 mm, while mean live weigth was 18.53±2.25 g. The growth rate was low during the winter and resumed in March. The monthly distribution of meat yield changed between 16.23 and 23.93% with a mean of 20.55±0.78%. The minimum and maximum meat yield were in April and July, respectively. There was a positive correlation between meat yield and particulate organic matter (P<0.05). The highest value of Specific Growth Rate (SGR) was in the first four months when the mussels were smaller size and food availability was higher. The final production was 7.97±0.18 kg per meter of rope. In the light of these results, mussel culture in the raft system was discussed.Keywords: mussel cultivation, raft system, Mytilus galloprovincialis, Black Sea. Ortalama boyu 40,28±0,51 mm ve ortalama ağırlığı 6,06±0,20 g olan bir yaşındaki midyeler naylon çuvallara doldurularak, sal sisteminden asılan halatlarda büyütülmüştür. Deneme süresince çevresel faktörlerin (sıcaklık, tululuk, klorofil-a, seston, partikül organik madde ve partikül inorganik madde) bazı büyüme parametrelerine etkisi izlenmiştir. Deneme sonunda, midyelerde boy 40,28 ile 71,72 mm arasında değişerek ortalama 58,86±2,81 mm, canlı ağırlığı ise 6,06 g ile 31,89 g arasında dağılım göstererek ortalama 18,53±2,25 g olarak ölçülmüştür. Büyüme oranı kış aylarında düşmüş ve Mart ayında tekrar artmaya başlamıştır. Et veriminin aylık değişimi %16,23 ile %23,93 arasında değişmiş beraber olup ortalama %20,55±0,78 olarak ölçülmüştür. En düşük et verimi değeri Nisan ayında elde edilirken en yüksek değer Temmuz ayında elde edilmiştir. Et verimi ve partikül organik madde arasında pozitif ilişki bulunmuştur (P<0,05). Çalışmada en yüksek spesifik büyüme oranı, midyelerin daha küçük ve besin miktarının daha fazla olduğu ilk dört ayda gerçekleşmiştir. Deneme sonunda yetiştirme halatının bir metresinde elde edilen ürün miktarı 7,97±0,18 kg olarak bulunmuştur. Elde edilen bu bulgular sonucunda sal sisteminde midye yetiştiriciliği tartışılmıştır. Karadeniz'de SinopAnahtar Kelimeler: midye yetiştiriciliği, sal sistemi, Mytilus galloprovincialis, Karadeniz.

Heavy Metals in Seafood Mussels. Risks for Human Health

“…( 2010 ) . In Turkey, the total aquaculture production reached 139,873 t in 2007, while M. galloprovincialis culture was only 1,100 or 5,000 t, depending on the published data, Karayucel et al ( 2010 ) or Ozden et al ( 2010 ) . The culture of M. galloprovincialis in the south region of the Black Sea is a relatively recent development and not yet widespread, but prospects for mussel culture in the Black Sea are quite high due to the favorable salinity, temperature, topography, food availability and socio-economic conditions in the area, Karayucel et al ( 2010 ) .…”

“…Expansion of M. galloprovincialis mariculture in the Mediterranean occurs in areas of Greece and Turkey, i.e. in areas of the Aegean Sea, and also Marmara and the Black Sea, Karayucel et al ( 2010 ) .…”

Condition Index, Meat Yield and Biochemical Composition of Mediterranean Mussel (Mytilus Galloprovincialis Lamarck, 1819) from Canakkale Strait, Turkey

“…In this study, meat yield and condition index of M. galloprovincialis were found respectively 13.01%-17.89% and 4.93-10.56. Meat yield and condition index of M. galloprovincialis were calculated as 13 -32% and 8 -17 in Canakkale-Dardanelles (on suspended ropes) (Yıldız et al, 2006), 16.23-23.93% in Sinop (in raft culture) (Karayücel et al, 2010), 23-31% and 7.33-25.20 in İzmir-Mersin Bay (collected from natural beds) (Kırtık, 2014), respectively. These parameters of M. galloprovincialis in this current study was found lower than the studies with mussels capture from natural beds and cultured.…”

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“…The optimum times for harvesting of M. galloprovincialis depend on geographical location of farm. For mussels from North Adriatic there were suggested the end of autumn and winter (Peharda, ˇZupan, Bavˇcevi´c, Franki´c, & Klanjˇsˇcek, 2007), for mussels from south of the Black Sea there were suggested period between February and May (Celik et al, 2012), the minimum and maximum meat yield were in April and July, respectively (Karayücel, Çelik, Karayücel, & Erik, 2010). From our study, we recommend harvest time for mussels from north the Black Sea (Crimea) when the meat yield index reaches more than 20%, which occurs all year round except for December and March.…”