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Efecto de las condiciones de transporte, recepción, aclimatación y siembra de Nauplios de Litopenaeus vannamei (Boone, 1931) sobre la sobrevivencia en larvicultura

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Author
Suárez, J.A.
García, A.
Newmark, F.
Bador, R.
Date
2001

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Alternative Title
Effect of transport, reception, aclimatation and sowing of nauplii Litopenaeus vannamei (Boone, 1931) upon culture survival
Abstract
In order to identify initial factors that can affect shrimp postlarvae survival during larval rearing, three larval rearing facilities from the Caribbean coast of Colombia were samplesd for 71 nauplii batches during 10 months of 1996. For each batch, cualitative variables (origin, transportation mode, presence of bacteria in transport water) and quantitative variables (transportation time and density, physicochemical parameters of the water, proportion of each nauplii stage and of deformed nauplii) were monitored. Water quality and density (nauplii/l) variables were monitored during the whole process of nauplii packing, transport, reception, acclimatization and stocking. To evaluate the relationship between qualitative variables and larval rearing survival, a multiple factor variance analysis was run, while, for quantitative variables, a stepwise multiple regression model was developed. Variables with significative (P<0.05) influence on survival were the transportation mode (with small private aircraft, average survival was 45%, compared to 35% with a pressurized commercial aircraft), the presence of bacteria (growing on T.C.B.S. media) in nauplii transport water (survival without these bacteria in water was 59% compared with 40% when these bacteria were observed) and the percentage of deformed nauplii. Furthermore, the specific presence of bacteria like Vibrio metschnikovii, Flavobacterium spp. and Alcaligenes spp. in nauplii transport water was a worsing factor.
Con el objeto de determinar los factores iniciales que pueden afectar la sobrevivencia de postlarvas de camarón durante el proceso de larvicultura, se muestrearon tres laboratorios ubicados en la costa Atlántica de Colombia, cubriendo 71 lotes de nauplios en un período de 10 meses durante 1996. Para cada lote de nauplios se hizo seguimiento de variables cualitativas (origen, modo de transporte, presencia de bacterias en el agua de transporte) y variables cuantitativas (tiempo y densidad de transporte, características de la calidad del agua, proporciones de cada estadío y deformidad de los nauplios). Las variables calidad del agua y densidad (nauplios/l) se evaluaron durante los procesos de empaque, transporte, recepción, aclimatación y siembra de los nauplios en finca. Para evaluar la relación entre las variables cualitativas y la sobrevivencia en larvicultura, se hizo un análisis de varianza de varios factores, mientras que para las variables cuantitativas se desarrolló un modelo de regresión múltiple. Las variables con influencia significativa (P<0.05) sobre la sobrevivencia en larvicultura fueron el modo de transporte (en avioneta con sobrevivencia promedio de 45%, contra 35% en aeronave comercial presurizada), la presencia de bacterias (crecimiento en medio T.C.B.S.) en el agua de transporte de los nauplios (sobrevivencia sin dichas bacterias del 59% contra 40% con ellas) y el porcentaje de nauplios deformes. Adicionalmente, se observó que la presencia específica de bacterias como Vibrio metschnikovii, Flavobacterium spp. y Alcaligenes spp. en el agua de transporte de los nauplios aumenta la mortalidad en larvicultura.
Journal
Boletín de Investigaciones Marinas y Costeras
Volume
30
Page Range
pp.3-18
Resource/Dataset Location
http://www.invemar.org.co/siad/descarga.jsp?type=documento&id=618
URI
http://hdl.handle.net/1834/3112
Collections
3. Boletín de Investigaciones Marinas y Costeras

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