<b>Resistance of <i> Litopenaeus vannamei </i> and <i> Farfantepenaeus subtilis </i> to infection by <i> Vibrio harveyi </i></b>
DOI:
https://doi.org/10.5088/atlântica.v34i1.2705Keywords:
Vibrio harveyi, infecção, sobrevivência, Litopenaeus vannamei, Farfantepenaeus subtilisAbstract
In penaeid shrimp, diseases caused by Vibrio species are usually associated with low survival in larviculture, nursery and growth systems. The objective of this study was to evaluate the resistance of Litopenaeus vannamei and Farfantepenaeus subtilis juveniles to an experimental infection by V.harveyi. Shrimp were exposed during 96 hours to three concentrations of V.harveyi inoculated directly in the water: 103, 106 and 109 CFU mL-1 and a control without addition of V.harveyi. Three replicates were used for each treatment. Samples of water and shrimp were collected from each treatment at end of the experiment to estimate Vibrio spp. counts. There was no significant difference in survival of L. vannamei and F. subtilis when compared to control. Both species had lower survival in the treatment 109 CFU mL-1, with 93% and 83%, respectively for L. vannamei and F. subtilis. There was an increase in the total concentration of Vibrio spp. in shrimp submitted to the highest concentration of V.harveyi (109 CFU mL-1) in the water. The results suggest that the concentrations of this V.harveyi strain did not affect shrimp survival at this life stage during the study period.Downloads
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Vogeley, J. L., Nery, R., Ferreira, B. do V., Vogeley, F., Lima, J. V., Soares, R., & Peixoto, S. (2012). <b>Resistance of <i> Litopenaeus vannamei </i> and <i> Farfantepenaeus subtilis </i> to infection by <i> Vibrio harveyi </i></b>. (DESCONTINUADA) Atlântica, 34(1), 41–45. https://doi.org/10.5088/atlântica.v34i1.2705
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Notas Breves