Pertumbuhan dan Laju Eksploitasi Ikan Tamban (Sardinella albella Valenciennes, 1847) di Perairan Selat Malaka Tanjung Beringin Serdang Bedagai Sumatera Utara

Abstract

The high demand society of tamban (Sardinella albella) was effect fishermen makes fishing effort too much without control. This study has the objective on accesing the growth and exploitation rates of tamban in Malacca Strait Tanjung Beringin Serdang Bedagai. This study was held in three months, which are from March until May 2015. The data analysis use the ELEFAN I method (Electronic Lenght Frequencys Assesment Tool) which packed in FiSAT II (FAO-ICLARM Fish Stock Assesment Tool). The samples of tamban are 721 which consist of 465 male tamban and 256 female tamban. The growth pattern of tamban is negative allometric. The range of condition factor are 0,630 – 1,633. The range of length frequency distribution are 147 - 152 mm, the size group is dominating are 167 - 171 mm for male tamban and 157 - 167 mm for female tamban. The estimation of Von Bertalanffy growth parameter of male tamban are L∞ = 211,89 mm with K = 0,230 per year and t0 = -2,615 years, and female tamban are L∞ = 211,05 mm with K = 0,550 per year and t0 = -0,604 years. Total mortality (Z) of male tamban is 1,19 per year and female tamban is 3,65 per year. The estimation natural mortality (M) of male tamban is 0,42 per year and female tamban is 0,74 per year. It shows the estimation of exploitation rates are 0,65 per year for male tamban and 0,80 per year for female tamban.