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Who Is Giovanni Chasin?

December 17, 2016

Giovanni Chasin (, an Ecuadorian with a Master’s Degree in Biology (Natural Resources Management) and a post-graduate degree in Molecular Biology, has worked at shrimp farms and hatcheries for thirty-plus years.  For the last ten years, he has lived in Brazil, running a consulting company that supplies technical support to shrimp farms and hatcheries.  Before that, he spent three-and-a-half years in Venezuela designing, setting up and training personnel for Groupo Lamar’s (Venezuela’s largest shrimp producer) hatchery and then managed Lamar’s 2.5-billion-postlarvae-a-year hatchery.

Previous to the above position, he held the following positions:

Brazil: One-and-a-half years as hatchery manager for Aquilider Maricultura, Ltda., one of the largest shrimp farming operations in the country, where he was responsible for designing and setting up the first broodstock facility in the country.  He also participated in the enlargement of the larvae culture facilities, increasing their capacity by an additional 1.5 billion postlarvae a year.

Ecuador: Six years as hatchery division manager at Omarsa S.A., one of Ecuador’s biggest producers and exporters of shrimp.

Egypt: Three years as a consultant for Sinai Shrimps 21 Company’s Penaeus semisulcatus hatchery.

Ecuador: For five years, beginning in 1989-1990, he was as part owner and manager of a small shrimp hatchery that now belongs to the Santa Priscila Group, one of the biggest players in the Ecuadorian shrimp farming industry.  While running the small hatchery, he provided consulting service to CEDALAB and LARVAFINA, larger hatcheries that are still in operation.

Ecuador: Three years as production manager at Semacua, S.A., a 1.2-billion-postlarva-a-year hatchery, a subsidiary of the Ecuadminsa Group.

Ecuador: Approximately two years as farm manager at Pescarsa (500 hectares) and Langosmar (250 hectares).

Chasin also wrote the first protocols for the production and use of probiotics in Ecuador.  In 1991, the protocols helped hatchery managers exclude Vibrio harveyii, a luminescent, highly virulent and pathogenic bacteria, with non-pathogenic strains of V. alginolyticus.  At two hatcheries, the protocols eliminated bolitas and luminescence diseases and reduced the use of antibiotics by at least 95%.  The protocols also helped control seagull syndrome.

Source: Emails to Shrimp News International from Giovanni Chasin.  December 12 and 15, 2016.

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