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The relationship and the fecundity between the egg size and the body weight of rainbow trout Oncorhynchus mykiss Walbaum, 1792 and brook trout Salvelinus fontinalis Mitchil, 1814 Gokkusagi Alabaligi Oncorhynchus mykiss Walbaum, 1792 ve Kaynak Alabaligi Salvelinus fontinalis Mitchil, 1814nin Yumurta Capi ile Vucut Buyuklugu Arasindaki Iliski ve Yumurta Verimleri



The relationship and the fecundity between the egg size and the body weight of rainbow trout Oncorhynchus mykiss Walbaum, 1792 and brook trout Salvelinus fontinalis Mitchil, 1814 Gokkusagi Alabaligi Oncorhynchus mykiss Walbaum, 1792 ve Kaynak Alabaligi Salvelinus fontinalis Mitchil, 1814nin Yumurta Capi ile Vucut Buyuklugu Arasindaki Iliski ve Yumurta Verimleri



Su Urunleri Dergisi. 2005( ) Temmuz-Aralik; 223-4: 435-438



This study was conducted in a private fish farm in Guneysu, Rize. The relationship between egg size and body weight of the rainbow trouts and the brook trouts was examined and its influence was compared with the fecundity. The trouts at the age of 3-4 were stripped in November, 2002, January and February, 2003 with the dry method. That the length average of rainbow trouts was 44,3 plus or minus 7,394 cm, that the weight average was 1050,3 plus or minus 461,027 g and that the fecundity was 3016,8 plus or minus 360,320 egg each were determined. The egg size was measured as 4,82 plus or minus 0,339 mm. On the other hand, these situation were seen in the brook trouts: The brood length average was 33,9 plus or minus 3,900 cm and the weight one was 526,8 plus or minus 202,098 g. The fecundity and the egg size were calculated as 1449,2 plus or minus 373,186 egg each and 4,28 plus or minus 0,261 mm. When the brood weights of both of the trouts were compared with the fecundity and the egg size, it was seen there was a positive relationship between them (r=0,91, r=0,69, p<0,05). At the same time, when the brood weight, the fecundity and the egg size of the rainbow trouts were compared to the brook trouts' ones, the difference between them was found significant (p<0,01).

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