September 14, 2015 — For more than 20-years, the old Grand Isle Sea Grant oyster hatchery and lab faced exposure to every known element the Gulf of Mexico could throw at it. The recently opened Mike Voisin Oyster Hatchery, whose namesake served as a Louisiana Wildlife and Fisheries commissioner and chairman of the Louisiana Oyster Task Force, may not face that same exposure to the elements, but instead face new challenges both manmade and natural.
Water quality will be a continuing challenge for the new $3 million dollar hatchery according to John Supan, an oyster specialist with Louisiana Sea Grant, who designed and oversees the facility. “The building’s water system is designed to go into recirculating mode during times when water quality is not optimal. It is one thing to have the system, but making it work will be a big challenge,” he explained.
According to the oyster researcher, periods of low salinity from wind-driven plumes of Mississippi River water, or local heavy rainfall from tropical waves, affects larval production in a hatchery environment.
All About Water Quality
Water quality has plagued the Grand Isle operation since inception. With more than 27 years in the making, the new oyster hatchery is shielded from the elements of the Gulf’s uncertain weather and Supan is confident he has found the solution for the fluctuation of water quality.
An advanced water circulation system and temperature-controlled system allows larvae and spat to be produced year-round. This will be instrumental in meeting the hatchery’s billion oyster larvae a year contract with the Louisiana Department of Wildlife and Fisheries (LDWF). Larvae produced at the facility will be used for the restoration of public reefs that were damaged after the Deepwater Horizon oil spill in 2010 and specifically for corrective action towards the state’s Natural Resource Damage Assessment funded cultch plants.
Read the full story at the Gulf Seafood Institute