Probiotic Bacterium and Microalga Interaction on Rearing Kumamoto Oyster Crassostrea sikamea Spat.

Current Microbiology
Ana C Sánchez-OrtizÁngel I Campa-Córdova

Abstract

This study assessed in vitro interaction between Bacillus bacteria and microalgae and their posterior in vivo effect on rearing Kumamoto oyster Crassostrea sikamea. The probiotic strains Bacillus licheniformis (MAt32), B. subtilis (MAt43) and B. subtilis (GAtB1) were individually inoculated in triplicate into 250 mL flasks containing 1 × 104 colony forming units (CFU) mL-1 of bacteria and 4.5 × 104 cell mL-1 of microalgae (Isochrysis galbana or Chaetoceros calcitrans) to evaluate their growth during a 7-day culture. Single cultures of microalgae or bacilli served as control. Additionally, C. sikamea spat was treated for 28 days with four single/combined bacillus treatments in triplicate at a concentration of 1 × 106 CFU mL-1 as follows: (a) control, without treatments; (b) combination of two antibiotics (10 mg L-1); (c) B. licheniformis; (d) B. subtilis; (e) B. subtilis subtilis and (f) mixed bacilli. The results showed a significantly (P < 0.05) increased growth of Bacillus strains co-cultured with microalgae, while the growth of I. galbana co-cultured with bacteria was not reduced significantly (P > 0.05) compared with the control group. C. sikamea spat treated with Bacillus showed significantly (P < 0.05) higher growth and s...Continue Reading

References

Sep 30, 2004·International Journal of Food Microbiology·H M TimmermanA C Beynen
May 13, 2006·Environmental Microbiology·Hans-Peter GrossartMeinhard Simon
Sep 21, 2010·Veterinary Microbiology·Susana PradoJuan L Barja
Feb 15, 2011·Food Microbiology·Simon M Cutting
Aug 2, 2011·Biotechnology Advances·Suresh R SubashchandraboseRavi Naidu
Dec 5, 2012·Diseases of Aquatic Organisms·Ralph A ElstonCathryn L Abbott

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