Resumo

MIRANDA-BAEZA, Anselmo; OROZCO-MEDINA, César; RIVAS-VEGA, Martha Elisa  e  LUNA-GONZALEZ, Antonio. Evaluation of the heterotrophic bacteria and vibrio load in an integrated shrimp-mollusc-macroalgae culture system. Hidrobiológica [online]. 2015, vol.25, n.2, pp.311-314. ISSN 0188-8897.

The load of heterotrophic bacteria and Vibrio spp. were evaluated in an integrated culture system of Litopenaeus vannamei Boone 1931, Mytella guyanensis Lamarck 1819 y Gracilaria vermiculophylla (Ohmi) Papenfuss, lasting for 45 days. The concentrations of heterotrophic bacteria were statistically similar at the beginning and at the end of the integrated culture and non-integrated culture (control), within a range from 106 to 107 CFU/mL; however, at the end, the total counts of vibrios in non-integrated culture were significantly higher than in an integrated culture, up to 8.8×104 UFC/mL. The integrated culture systems showed the capability to maintain load low levels of heterotrophic bacteria without detriment of the shrimp survival, reducing additionally the load of Vibrio spp.

Palavras-chave : Heterotrophic bacteria; Litopenaeus vannamei; Vibrio.