Characterizing the Baseline Catch Composition on the North Coast of East Java: A Case Study of Demersal Seine Nets in Tuban District
Keywords:
Catch composition, JTB, demersal fish, north coast, fishing trip incomeAbstract
Fisheries Management Area of the Republic of Indonesia (FMA-RI) 712, which encompasses the Java Sea and surrounding waters, is one of the most productive marine regions in the country, contributing significantly to national fisheries production. However, increasing exploitation pressure, particularly from medium-scale fisheries, demands focused attention on catch composition and its implications for resource sustainability. This study aims to identify and analyze the catch composition from demersal seine-net fishing activities along the northern coastal waters of Tuban District, East Java (part of FMA 712). Data were collected from January to April 2025 as a baseline to understand the structure of the fishery catch. Quantitative catch composition analysis reveals the influence of seasonal patterns and fishing depth on species variation, while qualitative data from observations and interviews explain how fishermen's adaptive practices influence catches. The catch was dominated by demersal fish (90,57%) and pelagic species (9,43%), reflecting a shift from previously recorded proportions. The dominant demersal species were Priacanthus tayenus, Nemipterus virgatus, and Upeneus sundaicus, while the dominant pelagic species were Scolopsis taenioptera, Sphyraena obtusata, and Atropus atropos. Field observations indicated that decision-making in fishing operations remains heavily reliant on local experience, with limited access to scientific information and technical regulations. This study provides an initial overview of the demersal fishery's ecological status in the study area and underscores the importance of ecosystem-based management and locally informed policies to ensure the sustainability of marine living resources in FMA-712.
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