Incorporación de ventanas de escape en nasas para jaiba, Ciénaga Grande de Santa Marta, Colombia
Loading...
Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Corporación Universitaria Lasallista, Editorial Lasallista.
Abstract
Introduction. The crab fishery in
Cienaga Grande from Santa Marta is
subject to strong pressure on immature
individuals, which has led to overfishing.
Objective. The dimension and location
of escape gaps was determined so that
the unwanted sizes could exit. Material
and methods. From video recordings,
the behavior and sites of preference of
the crab were studied. The size of the
gap was estimated using the following
morphometric relationships: carapace
width at base of lateral spines (ABEL)
vs carapace length and ABEL vs
body height. To establish statistical
differences between the captured sizes
and the catch per unit effort (CPUE) of
traps with or without gaps, the MannWhitney W test was used. Results.
The relationships were explained by
a linear relationship according to the
equations: Lc=0.5938*ABEL+0.3102
and Alt=0.3094*ABEL+0.2934. The
ABEL corresponding to the maturity
size was estimated at 106 mm. Four
rectangular windows were installed
(35 x 67 mm), which were located in
the lower corners. The size structure
captured showed differences (P<0.05) showing a reduction in the capture
of immature individuals. However, in
terms of capture efficiency there were
no differences between the evaluated
CPUE. Conclusion. The incorporation
of escape windows in the fishing of
crabs could favor the reduction of the
catch rates of immature individuals
and consequently contribute to the
sustainability of this fishery
Description
Keywords
Corporación Universitaria Lasallista, Área Metropolitana del Valle de Aburrá, Pesca - Comercio, Control del pescado
Citation
Revista Producción + Limpia -Vol. 13 No 2 - 2018