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May 26, 2014




Lachlan Harris (, President of Onelabt SA, in Ballenita, Ecuador, reports:


The increase in stocking densities and the resulting production of organic matter don’t threaten the future of Ecuadorian shrimp farming.  A healthy mangrove system and probiotics can handle them quite nicely.  What is threatening the industry is the use of chemicals, particularly antibiotics.  With increased stocking densities, farmers are more likely to used antibiotics to eliminate Vibrios and other pathogens.  Using antibiotics in open systems may solve problems in the short term, but in the long term, because the surviving pathogens become stronger and more resistant, antibiotics aggravate the problem.


Although the use of antibiotics is well controlled in Ecuador under the rules of Instituto Nacional De Pesca, I think the industry can take a further step.  I give the example of Australia, where they grow shrimp at densities of up to 100 animals per square meter, and farmers don’t use any antibiotics; in fact, it’s illegal to use antibiotics in shrimp farming in Australia.


It would be wonderful if Ecuador could do that?


Information: Lachlan Harris, ONELABT SA, Avenida Carlos Julio Arosemena, Guayaquil, Guayas, Ecuador (phone +593-42220100, email, webpage


Information: Piedrahita Yahira Falquez, Executive Director, Cámara Nacional de Acuacultura, Francisco de Orellana Avenue and Miguel H. Alcívar, Chambers Business Centre, Third Floor 301 Oficina, Guayaquil, Ecuador (fax +593-4-2683017, ext 109, email, web pages


Source: CAN–Ecuador (Cámara Nacional de Acuacultura) Googlegroup (email Subject: India Pide un Impulso en Investigación en Acuicultura (India Calls for a Boost in Aquaculture Research).  Translated by Google.  May 24, 2014.

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