Blue crab Callinectes sapidus (Decapoda : Brachyura) fishery in Lake Maracaibo, Venezuela

Citation
L. Villasmil et J. Mendoza, Blue crab Callinectes sapidus (Decapoda : Brachyura) fishery in Lake Maracaibo, Venezuela, INTERCIENCI, 26(7), 2001, pp. 301-306
Citations number
35
Language
SPAGNOLO
art.tipo
Article
Categorie Soggetti
Multidisciplinary
Journal title
INTERCIENCIA
ISSN journal
0378-1844 → ACNP
Volume
26
Issue
7
Year of publication
2001
Pages
301 - 306
Database
ISI
SICI code
0378-1844(200107)26:7<301:BCCS(:>2.0.ZU;2-W
Abstract
The blue crab Callinectes sapidus fishery in Maracaibo Lake, Venezuela is d escribed and the stock is assessed by biomass dynamic models. This fishery is regionally important due to the number of jobs created in resource extra ction and processing and export earnings obtained. Catch in metric tons and catch per unit of effort (CPUE) in kg/trap cover the period 1984-1997. Dur ing this time total catches have varied between 2000 mt in 1996 and around 5400 mt in 1994. Fishing effort has increased constantly from 70000 traps i n 1984 to more than 270000 traps in 1997. This has resulted in a marked red uction in CPUE from slightly less than 50 kg/trap in 1985 to less than 10 k g/trap in 1996. Data analysis by biomass dynamic models resulted in a Maxim um Sustainable Yield (MSY) of approximately 3800 mt with a corresponding ef fort of around 140000 traps. Confidence intervals for MSY at the 95% level were between 3650 and 4100 mt for the process error model and between 3400 and 4300 mt for the observation error model. Catch and effort levels in rec ent years are exceedingly high and must be reduced to avoid over-fishing an d allow for increasing resource biomass levels.