Astacus leptodactylus is naturally and widely distributed in lakes, ponds and rivers throughout Turkey (Harlioğlu & Harlioğlu, 2004). On recent years, there has been a gradual decrease in the production… Click to show full abstract
Astacus leptodactylus is naturally and widely distributed in lakes, ponds and rivers throughout Turkey (Harlioğlu & Harlioğlu, 2004). On recent years, there has been a gradual decrease in the production of crayfish in Turkey from 5000 tons in 1984 to 532 tons in 2015 (Turkish Statistical Onstitute, 2017). The greatest cause of this decline is crayfish plague fungus (Aphanomyces astaci) seen after 1985 (Baran et al., 1987; Rahe & Soylu, 1989; Harlioğlu, 2008). There is no crayfish culture in Turkey and all production is obtained from wild harvests (Harlioğlu et al., 2012). Therefore, culture of crayfish is needed to replenish native stocks of A. leptodactylus.
               
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