Level of Vulnerability of Fish Resources in Sunda Strait, Indonesia
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Abstract
Labuan Coastal Fishing Port is one of the fish-landing ports that accommodates catches in the Sunda Strait. Five fish species constitute the main catch at the Labuan Coastal Fishing Port, Indonesia. The continuous increase in fishing for these five species has raised concerns about the degradation of fish resources. The aim of this research is to analyze the level of vulnerability of fish resources caught in the Sunda Strait and landed at Labuan Coastal Fishing Port. The study was conducted at Labuan Coastal Fishing Port, Banten Province. Primary data were obtained by collecting fish samples over six months. The fish examined were Indian mackerel (Rastrelliger kanagurta), bullet tuna (Auxis rochei), bigeye scad (Selar crumenophthalmus), purple-spotted bigeye (Priacanthus tayenus), and Japanese threadfin bream (Nemipterus japonicus). These five species were selected because they dominate catches at the location. The fish stock vulnerability index was estimated using productivity and susceptibility parameters. The results showed vulnerability index values of 1.24, 1.41, 1.04, 1.62, and 1.48 for Indian mackerel, bullet tuna, bigeye scad, purple-spotted bigeye, and Japanese threadfin bream, respectively. These values indicate a low vulnerability category because all are below 1.8. Bigeye scad is considered the most capable of surviving in nature because it has the highest productivity value (2.50). Purple-spotted bigeye is considered the most vulnerable to fishing activities because, in addition to having the highest vulnerability index, it also has the highest susceptibility value (2.50).
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