A research report on " Sustainable Fisheries Management of Ucides occidentalis ("punche"), hydro-biological resources of Rio Lempa downstream, Jiquilisco Bay, Usulutan" is presented. This study encompasses the following objectives: a) to determine the parameters growth and the relationship between the biometric measurements, b) estimate the probability of capture and mortality rates and recruitment, c) assess the current rate of resource exploitation and, d) design a proposal for Sustainable Fisheries Management to be submitted for consideration by authorities.
The study included analysis of 1,460 individuals, collected in July-August 2007, February�March 2008, February 2009-August 2010 and February-April 2012. 682 organisms were females (47%) and 778 (53%) males. The average width of carapace was 62.15 mm with a weight of 106.88 g. Generally, males were larger and heavier than females in this species. The historical records showed that measures of carapace width and weight gradually increased from 2007 to 2012. Also, the analysis revealed the ecosystem present four sectors two north and two south of Izcanal estuary. It was also observed that organisms are influenced by seasonality, expressed by the rainy, dry and transitional seasons. This species exhibits a negative allometric growth, indicating that grow of this specie, is less in proportion to its size, probably by limitations of food in the ecosystem. The growth rate was estimated at 0.20, is evidence of low growth. The organisms of 77 mm have a 75% chance of capture and this group has received most fishing pressure. The recruitment pattern, in other words, the entry of reproductive specimens occurs from January to November, but mostly occurs between March and June. The exploitation rate calculated in this study is very close to over-exploitation limit, which would affect the viability of the population; this could be corrected to take action to increase the average width of the carapace of specimens caught in artisanal fisheries. A tangible contribution of this research to the sustainability of small-scale fishing of this
species, was made an approach of sustainable fisheries management, based on levels that biological, ecological and socio-economic, sets targets, activities, dates of execution,
responsible and indicators, for the achievement the follow objectives: a) Keep the stock at
sustainable levels, b) develop fishing activities in harmony with the ecosystem, c) Promote economic efficiency of fishing and, d) establish effective mechanisms for user participation. Additionally, a form of local monitoring of the population of Ucides occidentalis was developed and validated, to be implemented by rangers in the area, to record catches and evaluate the effect of real-time fishing and generate information locally to make decisions.