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| Format: | Artículo científico |
| Language: | en |
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Universidad de Costa Rica
2005
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| Online Access: | https://www.redalyc.org/articulo.oa?id=44918947025 |
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Table of Contents:
- Decadal variability in growth of the Caribbean spiny lobster Panulirus argus (Decapoda: Paniluridae) in Cuban waters Maria Estela de León Juana López Martínez Daniel Lluch Cota Sergio Hernández Vázquez Rafael Puga Biología Cuba Panulirus argus Growth parameters decadal variability Annual von Bertalanffy growth parameters of the Caribbean spiny lobster (Panulirus argus) in Cubanwaters were estimated from a long term study (40 years) by length-based methods ELEFAN and the new versionof SLCA. Data of around 800 000 lobsters (with carapace length ranging 14 to 199mm) were randomly sampledin artificial shelters (a non selective fishing gear very common in the lobster fishery), through the field monitoryprogram established for this species since 1963 in 14 localities of southwestern Cuban shelf. The software ELEFAN showed problems to converge in an optimal combination of the instantaneous growth coefficient (K) and the asymptotic length (L¿) of the von Bertalanffy equation, whereas the new SLCA software producedvalue estimates of K between 0.20 and 0.27 year-1 and values of L¿ between 177 and 190 mm carapace length,all within the range reported in the literature. The standardized anomalies of both parameters showed the presence of cycles along the analyzed time series. Decadal variability in growth parameters was revealed throughthe spectral analysis indicating cycles of 16 and 20 years for K and of 16 years for L¿. The incidence of somefactors such as biomass and emperature that modulate growth in this crustacean was explored, using a nonlinear multiple regression model. These combined factors explained 33% and 69% of the variability of K and L¿respectively. The growth coefficient appeared to be maximum with annual mean sea surface temperature of 28.1ºC and the largest L¿ is reached at a annual men biomass level of 23 000 t. These results should be the basis tounderstand the Cuban lobster population dynamics. Rev. Biol. Trop. 53(3-4): 475-486. Epub 2005 Oct 3. 2005 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44918947025 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.3-4 Vol.53