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Aquaculture Economics & Management | 2000

An overview of aquaculture in Turkey: With emphasis on sea bass and sea bream

Ferit Rad; Gülten Köksal

Abstract Aquaculture is a relatively recent industry in Turkey, enjoying great potential for development. Both freshwater and marine aquaculture are being practised in over 800 operational units. Rainbow trout (Oncorhynchus mykiss), Sea bream (Sparus aurata), Sea bass (Dicen‐trarchus labrax), comprise 90% of the total production, together with Atlantic salmon (Salmo salar), Common carp (Cyprinus carpio), Shrimp (Penaeidae spp.) and Mussel (Mytilus gal‐loprovincialis). Total aquaculture production reached 45 450 t in 1998, constituting 9% of total national fisheries production. Sea bass and sea bream farms are located along Aegean Sea and Mediterranean coasts and comprised 16% of the total number of aquaculture enterprises and 30% of total aquaculture production in 1997. Supplies of these two species have been steadily increasing in Turkey and other producing countries since 1990 resulting in market saturation and declining prices both locally and internationally. Mediterranean species including Epinephelus spp., Puntazzo puntazzo and Pagrus pagrus, are considered to be new candidates offering good prospects for mariculture.


Archive | 2002

BOZÜYÜK YÖRESİ GÖKKUŞAĞI ALABALIĞI İŞLETMELERİ ÇIKIŞ SULARININ KARASU DERESİ ÜZERİNE ETKİSİ

Serap Pulatsü; Fikri Aydın; Ferit Rad; A.Çağlan Karasu; Akasya Akçora; Nezir Kuyumcu

Bu calisma balikcilik isletmelerinden dogrudan birakilan balik diskisi ve artik yemlerin alici ortam uzerindeki kirlenme boyutunu arastirmak amaciyla yapilmistir. Bu amacla Bilecik-Bozuyuk ilcesinde gokkusagi alabaligi yetistiriciliginin alici ortam olan Karasu deresi uzerindeki cevresel etkilerini belirlemek icin dere uzerinde yer alan bes alabalik isletmesinin cikis sularinda cozunmus oksijen, pH, askidaki kati madde, biyolojik oksijen ihtiyaci (BOI5), kimyasal oksijen ihtiyaci (KOI), toplam fosfor yuku incelenmistir. Su ornekleri isletmelerden bir yil boyunca aylik olarak alinmistir.Elde edilen bulgulara gore cikis sularinin kalitesi isletmeden isletmeye ve mevsimden mevsime farklilik gostermistir. Ancak isletmelerin cikis suyundaki cozunmus oksijen, pH, askidaki kati madde, amonyak azotu, nitrit azotu ve nitrat azotu duzeylerinin farkli ulkelerde alabalik isletmeleri icin ongorulen standart ve sinirlarin icerisinde yer aldigi saptanmistir. Isletmelerin cikis suyu ile alici ortama birakilan ve bir ton balik uretimi icin kullanilan bir ton yem basina dusen fosfor yuku, literaturde belirtilen degerlerin uzerinde bulunmustur. Bes isletmenin Karasu Deresi uzerindeki ortalama fosfor yuku 9.38 kg P/ 1 ton balik ve 8.09 kg P/ 1 ton yem olarak saptanmistir. Bu yuksek fosfor yukunun kullanilan yemlerin yuksek fosfor iceriginden kaynaklanabilecegi sonucuna varilmistir.


Aquaculture | 2006

Effects of different long-day photoperiods on somatic growth and gonadal development in Nile tilapia (Oreochromis niloticus L.)

Ferit Rad; Sezai Bozaoğlu; Serap Ergene Gözükara; Arzu Karahan; Gülderen Kurt


Turkish Journal of Fisheries and Aquatic Sciences | 2004

The Impact of Rainbow Trout Farm Effluents on Water Quality of Karasu Stream, Turkey

Serap Pulatsü; Ferit Rad; Gülten Köksal; Fikri Aydın; A.Ç. Karasu Benli; Akasya Topçu


Turkish Journal of Veterinary & Animal Sciences | 2000

Growth performance and feed conversion efficiency of Siberian sturgeon juveniles (Acipenser baeri) reared in concrete raceways.

Gülten Köksal; Ferit Rad; Mevlüt Kindir


Turkish Journal of Veterinary & Animal Sciences | 2004

Effects of Spatially Localized and Dispersed Patterns of Feed Distribution on the Growth, Size Dispersion and Feed Conversion Ratio of the African Catfish (Clarias gariepinus)

Ferit Rad; Gülderen Kurt; A. Sezai Bozaoğlu


Turkish Journal of Veterinary & Animal Sciences | 2003

Growth performance and food conversion ratio of Siberian sturgeon (Acipenser baeri Brandt) at different daily feeding rates.

Ferit Rad; Gülten Köksal; Mevlüt Kindir


Turkish Journal of Veterinary & Animal Sciences | 2001

Structural and Bio-Technical Aspects of Rainbow Trout (Oncorhynchus mykiss)Farms in Turkey

Ferit Rad


Tarim Bilimleri Dergisi-journal of Agricultural Sciences | 2015

Effect of Different Tank Colors on Growth Performance of Rainbow Trout Juvenile (Oncorhynchus mykiss Walbaum, 1792)

Mustafa Üstündağ; Ferit Rad


Aquaculture Research | 2017

Establishing a benchmarking for fish farming – Profitability, productivity and energy efficiency of German, Danish and Turkish rainbow trout grow-out systems

Tobias Lasner; Alexander Brinker; Rasmus Nielsen; Ferit Rad

Collaboration


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Gülten Köksal

United States Department of Agriculture

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Serap Pulatsü

United States Department of Agriculture

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Arzu Karahan

Middle East Technical University

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Devin M. Bartley

Food and Agriculture Organization

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M. Halwart

Food and Agriculture Organization

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R. P. Subasinghe

Food and Agriculture Organization

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