Population Dynamics of Skipjack Fish (Katsuwonus pelamis) in the Waters of Kupang Bay, East Nusa Tenggara

Abstract

Skipjack tuna (Katsuwonus pelamis) is an important pelagic fishery resource and one of the export commodities landed at Fish Landing Base (PPI) of Oeba Kupang. There needs to be an understanding of the skipjack tuna population dynamics to be able to carry out sustainable fisheries management. Primary data collection was carried out in September 2022 using a simple random method with a total number of 60 samples. Data were analyzed used Microsoft Excel and FiSAT-II. The growth parameter of skipjack tuna has a value of L∞ = 50,67 cm, K = 0.51 per year and t0 = -0.25 years. The total mortality value (Z) is 1.13 per year, natural mortality (M) is 0.99 per year and fishing mortality (F) is 0.14 per year. Exploitation rate is 0.12 per year.