Population Dynamics of Indian Makerel (Rastrelliger kanagurta) in Northern Bone Bay Waters, Indonesia

Abstract

This study aims to analyze the parameters of Rastralliger kanagurta population dynamics in the waters of Northern Bone Bay. To analyze the parameters of population dynamics, measurements were made of the total length of the sample fish in centimeters. The research was conducted in March – September 2022 at the Palopo City Pontap Fish Landing Site. Sampling is carried out every two weeks. The results of the growth parameter analysis obtained each value of growth coefficient = 0.84 per year, asymptotic length = 30.5 cm and to = -0.189 years. Furthermore, for mortality parameters, natural mortality was obtained at 1.64 per year, capture mortality = 2.47 per year, and total mortality at 4.11 peryear and exploitation rate at 0.6%. The results show that the growth rate of Rastralliger kanagurta is very high and can reach maximum length at a relative age of 15 years. Mortality parameters show that Rastralliger kanagurta mortality in northern Bone Bay waters is higher from fishing than natural mortality. The exploitation Rastralliger kanagurta in the waters of northern Bone Bay is 60% greater than the maximum exploitation rate of 50%. Based on the results of this study, management of fishery resources is needed so that the population is not disturbed.