| Reproduction And Growth Biology Of The Sandsmelt (Atherina Boyeri Risso, 1810) Living İn The Iznik Lake
In this study, to determine some biological features of sand smelt inhabiting Lake Iznik which is biggest lake in Marmara Region were aimed. 1138 sand smelt individuals were monthly collected between October 2003 and December 2004 (except for January 2004). Length, weight, age, sex distribution and ratio, length-age, weight-age, length-weight relationships, condition factor, gonadosomatic index, and back-calculation values of sand smelt were determined. Age groups of the population varied between 0. and IV. Total length and weight of the individuals caught was 27-119 mm. and 0.1008-10.3646 g., respectively. Total length-weight relationship was W=0.0032xL3.3366 (r=0.9912) for all individuals. The parameters of the von Bertalanffy growth curves were estimated as L∞=128.8251 mm., k=0.3052, to= -0.0891. Back-calculated lengths of I., II., III. and IV. age groups of sand-smelt were 57.4 mm., 75.1 mm., 91.7 mm., 100.2, respectively. Highest condition value of males was determined in March (0.706) whereas in females it was determined in May (0.714). Spawning season based on gonadosomatic index values was from early April to late August
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