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논문 기본 정보

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학술저널
저자정보
I Nyoman Suyasa (Jakarta Technical University of Fisheries) Alifah Fitam Rakhma Sari (Jakarta Technical University of Fisheries) Siska Agustina (Fisheries Resource Center of Indonesia) Rian Prasetia (Fisheries Resource Center of Indonesia) Ratna Suharti (Jakarta Technical University of Fisheries) Toni Ruchimat (Jakarta Technical University of Fisheries) Budy Wiryawan (College of SHEE Murdoch University) Irfan Yulianto (Department of Fisheries Resource Utilization IPB University)
저널정보
한국수산과학회 Fisheries and Aquatic Sciences Fisheries and Aquatic Sciences 제26권 제3호
발행연도
2023.3
수록면
216 - 223 (8page)

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Pacific yellowtail emperor, Lethrinus atkinsoni Seale, 1910, is one of the most targeted reef fish species in Southern Sulawesi, Indonesia. Therefore, assessing its stock is important to understand the condition of the population, providing valuable inputs for sustainable fisheries management in the area. Here we assess the stock condition of L. atkinsoni in Southern Sulawesi, Indonesia, using the length-based spawning potential ratio model. A total of 4,887 individuals were collected from commercially small-scale fishers from January to October 2022. The total length, sex, and gonad maturity of the individuals were examined. We observed that the fish length ranged from 10.5 to 39.5 cm, with an average length of 23.3 cm. The sex ratio was equal (1:1.2) between male and female individuals. Length at first maturity and length at first capture were 23.4 and 19.6 cm, respectively. In addition, we observed a growth coefficient of 0.45/year, with an asymptotic length of 41.14 cm and natural mortality of 0.6/year. Based on these life history parameters, we observed the spawning potential ratio (SPR) value of 12%, indicating an unsustainable fishery level (SPR of < 30%). Further concerns related to the sustainability of the species and strategy to rebuild stock of the L. atkinsoni in Southern Sulawesi are of utmost importance.

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