Marine Biology

Aquaculture Microbiology and Biotechnology, Volume 2 by Didier Montet, Ramesh C. Ray

By Didier Montet, Ramesh C. Ray

Content material: quantity 2: New concepts for the regulate of bacterial infections in marine fish larval rearing -- Probiotics within the larval tradition of aquatic organisms -- Microbial degradation of seafood -- Microbiological safeguard and qulaity of processed shrimps and fishes -- Molecular detection of seafood-borne human pathogenic micro organism -- Fermented fish and fish items: an summary -- Bioprospecting of marine microalgae, corals and microorganisms -- Microbial remediation of fish and shrimp tradition platforms and their processing wastes -- Fish waste administration: therapy equipment dependent to using microorganisms -- Microbial reclamation of fish by-products

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35: 35-43. R. (1970). On r- and K-selection. Am. Nat. 104: 592-597. , Scapigliati, G. and Abelli, L. (2009). ). Fish Shellfish Immunol. 26: 368-376. Planas, M. and Cunha, I. (1999). Larviculture of marine fish: Problems and perspectives. Aquaculture 177: 171-190. P. A. (2004). Enhancement of rotifer (Brachionus plicatilis) growth by using terrestrial lactic acid bacteria. Aquaculture 240: 313-329. U. and Bergh, Ø, Pintado, J. (2006). ) larvae. Aquaculture 255: 323-333. J. and McIntosh, D. (2007).

Was able to show antagonistic activity with more than 25 Vibrio strains as well as other pathogens, such as Aeromonas hydrophila, A. salmonicida, Pseudomonas anguilliseptica, Tenacibaculum maritimum, and Streptococcus parauberis. Methods to Measure Antagonism Many methods have been devised or adapted to evaluate the antagonism between potential probiotic bacterial strains and pathogenic strains. The most common, perhaps because of its simplicity is to culture both strains in a solid medium crossing each other (cross-streaking) and observing if an inhibition halo in the pathogenic strains is observed at the crossing point.

1998). , 2000). , 2000). , 2000). Streptococcaceae Streptococcus phocae (PI80) was isolated from the intestine of shrimp (Penaeus indicus) and conferred protection to Penaeus monodon postlarvae (PL-55, 55 d after they molted from the last mysis stage) when challenged with a V. , 2009). The survival attained with this strain was 92% against 60% in the control (V. harveyi, only). However, this strain did not protect the postlarvae against a strain of V. parahaemolyticus. The authors speculated that the mode of action is the production of bacteriocins and other substances capable of making a pore in the cell membrane of pathogens, which leads to the efflux of K + ions, although no evidence is presented.

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