ASPEK PERTUMBUHAN IKAN LEMURU (Sardinella lemuru) YANG DIDARATKAN DI PPI KEDONGANAN

Abstract

Sardinella lemuru is a popular pelagic fishery commodity in Indonesia because of its affordable price, high demand has led to overfishing, and population decline, requiring sustainable management through growth aspects. This research analyzes the growth aspects of Sardinella lemuru landed at PPI Kedonganan. The research method used a simple random sampling technique with 90 samples. The results showed total length ranged from 13,5-20,5 cm with an average of 17,12 cm, while weight ranged from 26,3-78,5 g with an average of 48,8 g. Length and weight relationship analysis revealed significant temporal growth pattern variations, namely positive allometric in August (b=2,1994) and September (b=2,4392), and negative allometric in October (b=1,8733). Overall, the regression equation W=0,0315L^2.5794 with R²=0,8657 and r=0,93 indicates a very strong relationship with positive allometric growth pattern. The t-test at 95% confidence level (t_hitung =2,59>t_table=1,98) confirms the statistical significance of this growth pattern. Condition factor experienced monthly fluctuations with values of 0.968 (August), 1.069 (September), and 0.975 (October), reaching optimum in September. This temporal variation is related to oceanographic dynamics, natural food availability, and seasonal changes affecting water productivity. Results indicate that the lemuru fish population is in good health condition with weight growth more dominant than length growth, indicating environmental conditions that support biomass accumulation.