Conservation status evaluation of the sea cucumber Isostichopus badionotus (Aspidochirotida: Stichopodidae), on the Isla de la Juventud, Cuba
DOI:
https://doi.org/10.36829/63CTS.v12i2.1759Keywords:
pesquería, holoturia, manejo, captura máxima sostenible, punto de referenciaAbstract
The Isostichopus badionotus sea cucumber fishery in the Isla de la Juventud region of Cuba began in 2004. Currently, this fishing area is one of the few that remain active, so updating the status of the resource and determining sustainable reference points for this area is of great importance. This research seeks to identify the best assessment model and determine sustainable reference points for this area. PESCAISLA sea cucumber fishery statistics were used, for catch (t) and fishing effort (fishing days) per season from November (year x) to May (year x+1), for the period 2005-2022. The catch per unit effort (CPUE) was determined for each year. The state of the resource was evaluated using dynamic models of surplus biomass production. To explore the most appropriate model, different variants of the Schaefer (1954) and Fox (1970) models with Hillborn and Walters (1992) method and the Pella and Tomlinson (1969) model as modified by Costello colaboradores (2016) were used. The best fit proved to be Pella-Tomlinson with lognormal process error and analytical calculation of q, the results of which were used to describe the status of the resource and define reference points for the management of its fishery. Four distinct stages in the fishery could be identified: healthy from 2005 to 2006, overfishing from 2007 to 2013, overfishing and depletion from 2014 to 2019 and depletion from 2020 to 2022 with a slight trend towards biomass recovery.
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