Diversity and Catch per Unit Effort of Marine Fishes Caught by Various Fishing Gears in Cabugao, Ilocos Sur

Abstract

Fishery resources play a vital role in ensuring food security and nutrition while contributing to economic growth through fish production and trade. This study aimed to determine the diversity of marine fishes caught by various fishing gears in Cabugao, Ilocos Sur. A quantitative research design was utilized, providing numerical data on the diversity, abundance, and catch per unit effort of marine fishes. Data gathering was conducted in the five coastal barangays of Cabugao, Ilocos Sur, from January to March 2025. Mean, ANOVA, and Games-Howell tests were employed to determine the average abundance, test for significant differences in CPUE, and compare fishing gears, respectively. Simple handlines, bottom-set longlines, gillnets, and pamo gillnets are commonly used fishing gears. The various fishing gears caught a total of 60 species. Pamo gill net yielded the highest abundance (279,497), while the bottom-set longline was the lowest (541). Species diversity was low in bottom-set longlines (2.24) and gillnets (2.33), while very low in simple handlines (1.04) and pamo gillnets (.58). The low species diversity across gears suggests potential ecological pressure influenced by seasonality, fishing intensity, and gear selectivity. The Catch Per Unit Effort (CPUE) of the various fishing gears significantly differed. These findings provide baseline, gear-specific data that can inform municipal fisheries management and sustainable gear regulation in Cabugao, Ilocos Sur. The study recommends guiding fisherfolk on the sustainable use of fishing gear, conducting continuous monitoring to track changes in fish diversity, regulating fishing to reduce ecological impact, and developing sustainable fishing strategies.