Zanella Davor, Mrakovcić Milorad, Schneider Daniela, Mustafić Perica, Caleta Marko, Radić Ivana
Department of Zoology, Faculty of Science, University of Zagreb, Rooseveltov Trg, Zagreb, Croatia.
Folia Biol (Krakow). 2003;51 Suppl:155-7.
Age and growth of Cobitis narentana were examined in the delta of Neretva River in Croatia. Maximum observed length was 100.4 mm for females and 63.5 for males. Five age classes were determined, from 0+ to 4+. For both females (61.0%) and males (53.8%), the greatest proportion of specimens were in the 1+ age category. Growth was faster in males in the first year of life, while females grew at a faster rate than males after the first year. The Fulton condition factor was determined (CF=0.588 for males and CF=0.618 for females). The length-weight relationship was determined for females (W=8xl0(-5)L2.9325) and males (W=2x l0(-5)L2.6431). The parameter b was calculated as less than b=3.0, thus establishing that growth in both males and females was allometric. Growth rate was determined using the von Bertalanffy growth rate curves for females (Lt=101.1[ 1-e(-0.5(t-0.94)]; r2=0.99) and for males (Lt=65.3[1-e(-0.54(t-2.27)]; r2=0.97). The resulting growth rate coefficient (K) was found to be slightly higher in males (0.54) than in females (0.5).
在克罗地亚内雷特瓦河三角洲对纳氏鳅的年龄和生长进行了研究。观察到的雌性最大体长为100.4毫米，雄性为63.5毫米。确定了五个年龄组，从0+到4+。雌性（61.0%）和雄性（53.8%）中，最大比例的标本处于1+年龄组。雄性在生命的第一年生长较快，而雌性在第一年之后生长速度比雄性快。测定了富尔顿肥满度系数（雄性CF = 0.588，雌性CF = 0.618）。确定了雌性（W = 8×10⁻⁵L².⁹³²⁵）和雄性（W = 2×10⁻⁵L².⁶⁴³¹）的体长-体重关系。计算出参数b小于b = 3.0，从而确定雄性和雌性的生长都是异速生长。使用冯·贝塔朗菲生长率曲线确定生长率，雌性（Lt = 101.1[1 - e⁻⁰.⁵(t - 0.94)]；r² = 0.99）和雄性（Lt = 65.3[1 - e⁻⁰.⁵⁴(t - 2.27)]；r² = 0.97）。结果发现，雄性的生长率系数（K）（0.54）略高于雌性（0.5）。
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