“Eggs from infected shrimp brood stock have been shown to produce healthy post-larvae if properly disinfected, prompting a major hatchery to change its protocols and a huge spike in juvenile survival rates.”
Back in 2018, at the SEAFDEC/AQD Tiger Shrimp Spawner/Broodstock Facility in Iloilo, Philippines, eggs from shrimp brood stock that were shown to contain pathogens would be promptly chlorinated and disposed of to maintain biosecurity.
The hatchery uses polymerase chain reaction (PCR) tests on the broodstock, in order to weed out any infected with white spot syndrome virus (WSSV), monodon baculovirus (MBV), infectious hypodermal and hematopoietic necrosis virus (IHHNV), yellow head virus (YHV), acute hepatopancreatic necrosis disease (AHPND), and the parasite Enterocytozoon hepatopenaei (EHP).
However, given the large number of eggs being disposed of – from 200,000 to 1 million of them per brood – SEAFDEC/AQD scientist Dr Leobert de la Peña started disinfecting the eggs and soon found that disease-free post-larvae can be successfully produced from infected broodstock.
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