DAO 74:243-247 (2007)  -  doi:10.3354/dao074243

Synechocystis MCCB 114 and 115 as putative probionts for Penaeus monodon post-larvae

R. Preetha1, N. S. Jayaprakash1,2, I. S. Bright Singh1,*

National Centre for Aquatic Animal Health, Cochin University of Science and Technology, Lakeside Campus, Fine Arts Avenue, Cochin 682016, India
2Present address: Centre for Bioseparation Technology, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
*Corresponding author. Email:

ABSTRACT: Synechocystis MCCB 114 and 115 were segregated as putative probionts for shrimp larvae from a collection of 54 cyanobacterial cultures enriched from seawater. On feeding Penaeus monodon post-larvae with the cyanobacteria, the generic diversity of the intestinal bacterial flora could be enhanced with substantial reduction or total absence of Vibrio spp. A significant difference (p < 0.001) in the percent survival of batches of post-larvae fed on the cyanobacterial cultures was observed and, on repeated challenge with V. harveyi, the relative percent survival of those batches of larvae fed on Synechocystis MCCB 114 and 115 was significantly higher. The Synechocystis MCCB 114 and 115 cultures were found to contain high levels of protein (34 to 43%), in addition to carotenoids.

KEY WORDS: Probiotic · Vibriosis · Antagonism · Vibrio · Aquaculture · Synechocystis · Cyanobacteria · Shrimp

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