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  • 1
    Publication Date: 2021-05-19
    Description: Ante la alta incidencia de langostas sublegales en las capturas de la región nororiental de Cuba, la cual se efectúa en casi 70 % con nasas, se diseñó y ejecutó un experimento para determinar la influencia de diferentes ventanas de escape de 53, 55 y 57 mm de alto por 440 mm de largo, en la evasión de langostas sublegales y de otras especies marinas capturadas de forma incidental. Los análisis estadísticos (Anova) demuestran que no se presentan diferencias significativas (p 〉 0,05) entre el largo y el alto del cefalotórax entre hembras y machos; las curvas de selectividad basadas en el escape de langostas de talla conocida a través de los tres altos de ventana, muestran que la ventana de 55 mm de alto presenta los mejores resultados para la actual talla mínima legal (76 mm LC). Se recomienda realizar un estudio similar en el medio natural con vista a implementar, lo antes posible, el uso obligatorio de ventanas de escape en las nasas langosteras para reducir el volumen de langostas sublegales en las capturas y garantizar una mayor posibilidad de escape a otras especies.
    Description: escape windows in pots,
    Keywords: Lobster fisheries ; Protection
    Repository Name: AquaDocs
    Type: Preprint
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  • 2
    Publication Date: 2021-05-19
    Description: Las diferentes metodologías descritas para la estimaciónde la condición nutricional en langostas,presentan particularidades que constituyen ventajas o desventajas según las circunstancias en que se apliquen.El objetivo de estetrabajofueestimarlacondiciónnutricionaldelangostas Panulirusargus mediantedosmetodologías,elíndicederefraccióndelahemolinfa(IRH)ylatasa pesototal(PT)/largototal(LT)=K,ydeterminarlafactibilidaddeemplearunau otramediantelacomparacióndelosresultados.SetrabajóenlaregióndelGolfo deBatabanó,Cuba,conlangostasprovenientesdeseiszonasdepesca.Se determinópesototal,largototal,sexoyelestadíodemudadecadaejemplar.Se encontróqueelIRHpresentadiferenciassignificativasentrelosestadíosdemuda, noasíK.EstopudieradeberseaqueelIRHtambiénrespondeavariacionesenel estadofisiológico,lasqueusualmenteocurrenacortoplazo.Tambiénalcomparar entrezonassóloelIRHpresentódiferenciassignificativas,locualseexplicapor lasproporcionesdelangostasenmudaenlasdiferenteszonas.Medianteambas metodologíasseencontrarondiferenciassignificativasentresexos,porloquees posiblequeéstasrealmenteexistan,aunquelosporcentajesdelangostamuda pudieranenmascararlosresultadostambiénenestecaso.Finalmente,unaseriede recomendacionessondadas,acercadecuándoutilizarunauotrametodología. Recibido:11noviembre2011/Aceptado:11diciembre2012.
    Description: Abstract. Thedifferentmethodologiesdescribedforestimatingthenutritional conditionoflobstershaveparticularitiesthatconstituteadvantagesordisadvan- tagesaccordingtothecircumstancesinwhichtheyareapplied.Theobjectiveof thisworkwastoestimatethenutritionalconditionof Panulirusargus lobstersus- ingtwomethodologies:theBloodRefractiveIndex(BRI))andthetotalweight (PT)/totallength(LT)=Kratio,andtodeterminethefeasibilityofusingoneorthe otherbycomparingresults.LobsterswerecollectedfromsixzonesoftheGulfof Batabanó,Cuba.Totalweight,totallength,sexandmoultstageofthelobsters weredetermined.TheBRIshowssignificantdifferencesbetweenmoultstages, butKdidnot.ThiscouldhavehappenedbecausetheBRIalsorespondstovaria- tionsinthephysiologicalstatethatusuallyoccurintheshortterm.Whencompar- ingzones,onlytheBRIshowedsignificantdifferences,whichisexplainedbythe proportionsoflobstersmoultinginthedifferentzones.Usingbothmethodologies, itwaspossibletodetectsignificantdifferencesbetweenthesexes,indicatingthat thesedifferencesreallyexist,althoughthepercentageofmoultingcouldalsomask resultsinthiscase.Finally,aseriesofrecommendationsaregivenaboutwhento useonemethodologyortheother. Received:11november2011/Accepted:11de- cember2012.
    Description: Published
    Description: Panulirus argus
    Description: Gulf of Batabano
    Keywords: Nutritional requirements ; Lobster culture ; Weight ; Length
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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  • 3
    Publication Date: 2021-05-19
    Description: The Caribbean spiny lobster Panulirus argus, the most valuable Cuban fishery resource, is managed with a set of input and biological controls. The aim of this study was to integrate two indices that relates water and nutrients supply and tropical cyclones activity in the stock assessment, through simultaneous estimation of the parameters of a spawning stock–recruitment function in a statistical catch-at-age analysis. The population dynamics model allowed estimating key Reference Points for management at fixed levels of fishing mortality rate and environmental conditions. The results indicated that the reduction of recruitment and catches in the Cuban spiny lobster fishery could be a result of synergistic cumulative effects because of the anthropogenic reduction of nutrients supplies and the increase of the potential destructiveness of tropical cyclones since 1994, mainly from 2001 on. Although the degradation of the coastal habitat quality in Cuba was apparent and perhaps unavoidable, the assessment of the impact allowed implementing management actions for the spiny lobster fishery sustainability. The implementation of annual TAC depending on the stock status, have maintained the fishery around the more conservative Reference Points F40% and F0.1 during the current unfavorable environment period.
    Description: Published
    Description: Caribbean spiny lobster (Panulirus argus)
    Description: Catch-at-age analysis
    Description: Cuba
    Keywords: Lobster fisheries ; Stock assessment ; Fishery management ; Analysis ; Environmental effects
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed , Article
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