Bravo Edwis, Eslava Nora, González Leo
Escuela de Ciencias Aplicadas del Mar, Departamento de Acuacultura, Instituto de Investigaciones Científicas, Núcleo de Nueva Esparta, Universidad de Oriente, Venezuela.
Rev Biol Trop. 2009 Mar-Jun;57(1-2):105-12.
We analyzed the growth and natural mortality of the fish known locally as cuji (H. aurolineatum) in the southwest of Margarita Island, July 2005 to June 2006. A sample of 1,378 males and 1,143 females from artisanal fishing vessels of Boca del Río was analyzed. The common relation for both sexes was expressed by the equation P=0.038*L(2.87). The asymptotic length (L(infinity)) was estimated with Powell's (1979) routine and Wetherall (1986), and the growth coefficient (k) with ELEFAN I - FISAT II (FAO-ICLARM). The modal progression analysis was used after decomposition of lengths frequency according to Bhattacharya, and the estimations of L(infinity), and k optimized according to Gulland and Holt (1959). The growth curve was fitted to von Bertalanffy (1960); it is exponential, with accelerated growth in the first two years and less growth as the fish approaches maximal length. The rate of natural mortality was high (M=1.15 year(-1)), and probably was caused by high depredation.
我们分析了2005年7月至2006年6月在玛格丽塔岛西南部当地称为库吉（H. aurolineatum）的鱼类的生长和自然死亡率。对来自博卡德尔里奥手工渔船的1378条雄性和1143条雌性样本进行了分析。两性的共同关系由方程P = 0.038 * L(2.87)表示。渐近长度（L(∞)）用鲍威尔（1979年）的方法和韦瑟罗尔（1986年）的方法进行估计，生长系数（k）用ELEFAN I - FISAT II（粮农组织 - 国际水生生物资源管理中心）进行估计。根据巴塔查里亚方法对长度频率进行分解后，使用模态进展分析，并根据古兰和霍尔特（1959年）的方法对L(∞)和k进行优化。生长曲线拟合冯·贝塔朗菲（1960年）的曲线；它是指数型的，前两年生长加速，但随着鱼接近最大长度，生长减缓。自然死亡率很高（M = 1.15年(-1)），可能是由高捕食率导致的。
