Stock Study of the Skipjack Tuna (Katsuwonus pelamis, L., 1758) in Ternate Island, North Maluku Province, Indonesia | ||||
| Egyptian Journal of Aquatic Biology and Fisheries | ||||
| Article 58, Volume 27, Issue 4, July and August 2023, Page 919-929 PDF (687.93 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejabf.2023.313474 | ||||
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| Author | ||||
| Umar Tangke et al. | ||||
| Abstract | ||||
| Due to the continuous exploitation of skipjack tuna in the waters of Ternate Island, using active pole and line fishing gears, the skipjack tuna population is suspected to experience degradation in the waters of Ternate Island. Therefore, this research was conducted with the aim of analyzing the status of skipjack tuna populations in the waters of Ternate Island based on population dynamics studies, including parameters of growth, mortality, recruitment and exploitation rate. Experimental fishing methods were implemented to measure fish length which was then analyzed to determine the pattern of growth, mortality, exploitation rate, and yield per recruit. The results showed that the parameter of the skipjack tuna population studied had an asymptote length (L∞) of 77.7 cm, with a growth coefficient of 0.4 per year and a t0 of -0.41. Furthermore, natural mortality (M) was 1.75, while fishing mortality was determined as 1.60, and the current exploitation rate (E) showed a value of 0.48. These values indicate that the management of skipjack tuna in Ternate Island waters is close to optimum conditions (E = 0.5). | ||||
| Keywords | ||||
| Skipjackttuna; Katsuwonusppelamis; Population aspect; Mortalityy | ||||
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