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June 24, 2014

India

How to Control Luminescent Bacteria

 

Arjunvasan Ambigapathy (a.arjunvasan@gmail.com): We are cultivating Penaeus vannamei in a one-hectare pond in Tamil Nadu, a state on the east coast of southern India.  Currently, our shrimp weigh ten grams after 90 days of growout.  We have observed the growth of luminescent bacteria in our pond over the past week, and would like to control it.  Please note: ten days back our shrimp had white guts, but we were able to control that.  Now we are hoping to control the luminescent bacteria, and plan to use PS-1, a probiotic sold by Grobest Feeds Company that kills luminescent bacteria.  We use a mixture of cooked feed, rice bran and pond water to ferment and replicate the bacteria.  The fermented mixture is diluted and applied over the pond.  If prepared in the evening, it is applied in the morning.  It is effective against luminescent bacteria growth, and also used to control Vibrios.

 

We are in a very dry environment with daytime temperatures from 37-40 degree C.  If you know of any other effective methods for controlling or preventing luminescent bacteria, please email me at the above address.

 

Sources: 1. The Shrimp List (a mailing list for shrimp farmers).  Subject: Requesting Inputs to Eradicate Luminescent Bacteria.  June 23, 2014.  2. Email to Shrimp News International from Arjunvasan Ambigapathy.  Subject: What’s PS-1.  June 23, 2014.

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