Growth of female crab Romaleon setosum (Crustacea: Decapoda) in Peruvian waters
DOI:
https://doi.org/10.3989/scimar.05571.099Keywords:
fisheries management, length-frequency analysis, growth parameters, uncertaintyAbstract
The crab Romaleon setosum holds significant commercial value for artisanal fisheries in Peru and Chile. How-ever, critical life-history parameters necessary for stock assessments remain understudied, hindering the development of precautionary fishing strategies. Given the morphological and growth differences between sexes in R. setosum and the low presence of large male specimens, this study provides the first estimates of growth parameters for female R. setosum in Peruvian waters, employing a length-based resampling method and length-frequency analysis based on the von Bertalanffy growth function. The results reveal that accurate parameter estimates require larger sample sizes with different modal pro-gressions. Longevity estimates align with previous studies and do not increase in specimens from higher latitudes, suggesting pronounced spatiotemporal environmental variability driven by upwelling zones and climatic events such as warmer (El Niño) and colder (La Niña) phases. These findings are essential for the effective management and sustainable exploitation of this resource, as growth parameters are fundamental inputs for both data-rich and data-limited population assessment models.
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