EHP in Aqua Culture (Shrimp)
WHAT IS EHP?
Enterocytozoon hepatopenaei (EHP) is a microsporidian parasite that was first characterized and named from the giant or black tiger shrimp Penaeus monodon from Thailand in 2009.
It was discovered in slow growing shrimp but was not statistically associated with slow growth at that time.
EHP is confined to the shrimp hepatopancreas (HP) and morphologically resembles an unnamed microsporidian previously reported in the HP of Penaeus japonicas from Australia in 2001.
Together, these studies suggest that EHP is not an exotic pathogen but that it is endemic to Australasia. Later, it was found that EHP could also infect exotic Penaeus vannamei imported for cultivation in Asia and that it could be transmitted directly from shrimp to shrimp by the oral route.
This differed from the most common microsporidian previously reported from cotton shrimp, where transmission required an intermediate fish host, allowing disruption of transmission by exclusion of fish from the production system.
WHY EHP IS IMPORTANT
Although EHP does not appear to cause mortality, information from shrimp farmers indicates that it is associated with severe growth retardation in P. vannamei.
EHP leads to slow growth rate in shrimp culture.
Scientists now have information indicating that EHP outbreaks are occurring widely in China, Indonesia, Malaysia, Vietnam and Thailand. Very recently, they have also received samples PCR-positive for EHP from slow growing shrimp in India. Thus, EHP is an emerging problem that is under urgent need of control
HOW TO CONTROL INTERNATIONAL SPREAD OF EHP:
Sadhgama Biosciences is responsible for denaturing EHP in the ponds as well as shrimp culture by using innovated molecule which denature the eggs of EHP without destructing shrimp.
The spreading can be stopped by preventive treatment to the pond and culture by water treatment.
Whereas infected shrimp culture can be treated by water treatment which leads to denature eggs where spreading can be stopped
Treatment/prevention/cure of EHP consists of 2-5 ltrs of our medicine mix in 500 ltrs of fresh water and add into hectare pond.