Abstract The objective of this study was to determine growth parameters, such as age–length and length–weight relationships, as well as condition factors and sex ratio, of the Carassius gibelio (Bloch, 1782) population in Lake Marmara (western region of Turkey), which is one of the most important fishing areas. Fish were caught on a monthly basis by gillnets and trammel nets (mesh size 10–50 mm) between March 2012 and February 2013. A total of 1058 specimens (809 females and 249 males) were examined. The female–male ratio was 1:0.31. The maximum age was determined as VI and V for females and males, respectively. The total length of females and males ranged from 10.0 to 27.5 cm and from 10.2 to 24.0 cm, respectively. Their weight varied from 17.1 to 378.4 g and from 17.7 to 244.9 g, respectively. Length–weight relationship parameters were a = 0.014 and b = 3.040 for females and a = 0.015 and b = 3.039 for males. Von Bertalanffy growth parameters of the C. gibelio population were as follows: L∞ = 35.86 cm, k = 0.189 year−1, t0 = −1.238 years. Minimum and maximum condition factors were 1.56 for females in October and 1.82 in May and 1.67 for males in September and 1.94 in January.

中文翻译：

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马尔马拉湖（土耳其）中入侵的银鲫 Carassius gibelio（Bloch，1782）的生长参数

摘要 本研究的目的是确定马尔马拉湖（土耳其西部地区）鲫鱼（Bloch，1782）种群的生长参数，例如年龄-身长和身长-体重关系，以及条件因素和性别比。 )，这是最重要的捕鱼区之一。2012 年 3 月至 2013 年 2 月期间，每月使用刺网和网眼网（网目尺寸 10-50 毫米）捕获鱼类。共检查了 1058 个标本（809 条雌鱼和 249 条雄鱼）。男女比例为1:0.31。最大年龄分别确定为女性和男性的 VI 和 V。雌性和雄性的总长度分别为 10.0 至 27.5 厘米和 10.2 至 24.0 厘米。它们的重量分别从 17.1 到 378.4 克和从 17.7 到 244.9 克不等。长度-重量关系参数为 a = 0。女性为 014 和 b = 3.040，男性为 a = 0.015 和 b = 3.039。C. gibelio 种群的 Von Bertalanffy 生长参数如下：L∞ = 35.86 cm，k = 0.189 年-1，t0 = -1.238 年。10 月份女性的最低和最高条件因子为 1.56，5 月份为 1.82，9 月份男性为 1.67，1 月份为 1.94。