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  • 1
    ISSN: 1573-0832
    Keywords: Aflatoxin ; Aspergillus flavus ; aflatoxin natural ; semisynthetic and synthetic media
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract We have studied the aflatoxin producing capacity of 41 Aspergillus flavus strains isolated from the mycoflora present of natural media (wheat, rice and mixed feed) synthetic medium (Aflatoxin Producing Ability Medium) and semisynthetic media (Coconut Agar Medium and Glucose Yeast Extract Agar) were compared. Aflatoxins were analysed on days 4 and 8 post-inoculation under an incubation temperature of 28 °C. A total of 30 strains (75.7%) were producers on natural media as detected by Thin Layer Chromatography: 23 strains on wheat, 27 on rice and 12 on mixed feed. The results by qualitative flourescence tests on synthetic and semisynthetic media were: 3 strains positive on Coconut Agar Medium (CAM) 1 on Glucose Yeast Extract Agar (GY + Agar) and none on Aflatoxin Producing Ability Medium (APA).
    Type of Medium: Electronic Resource
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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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