Artisanal fishing of the yellowtail snapper (Ocyurus chrysurus) on the Nisy Katiusca vessel

Abstract

With over six thousand artisanal fishermen in the Nicaraguan Caribbean, fishing for yellowtail snapper (Ocyurus chrysurus) of the Lutjanidae family, has become a commercial activity of great interest in the region. This investigation aims to study commercial fishing, based on yield and effort of the yellowtail snapper catch on the Nisy Katiusca vessel, to determine its profitability in artisanal fishing. Statistical analyses were performed with the SPSS program. The Dimp 1 software was used to analyze the main population parameters, and finally, the cost-benefit analysis (CBA) was performed. The study identified six age classes, with classes 3+ and 4+ accounting for over 78 % of total catches. The relationship between LT and W is an exponential model (W= a LT ^b) that explains positive allometric growth. The average catch per unit of effort obtained is 258.65 lbs over 90 days of fishing. 65 % of the population density and biomass are concentrated in class 4+ (average size 27.2 cm). NPV, IRR, and B/C analyses indicate that the activity is economically feasible; investment is recovered within 4 months, and the profit obtained is 27 cents (without a researcher) and 21 cents (with a researcher) for each Cordoba invested. To ensure sustainability and improve yield, the implementation of a series of measures that combine biological, economic, and social aspects is necessary.