Rand News

Drug-resistant bacteria detected in Rohu fish

Rohu Rand Aqua

Dangerous multiple drug-resistant versions of bacteria with human health implications have been detected in Indian major carp or Rohu, a popular aquaculture fish consumed across India.  In an examination carried out by the National Institute of Biotic Stress Management of the Indian Council of Agricultural Research in Raipur, Chhattisgarh, the scientists found that Rohu fish were carrying a pathogen associated with hospital-acquired infections.

The test, which has for the first time found the presence of such a pathogen in the gastrointestinal tract of a widely consumed fish in the country, has highlighted the extent of improper hospital waste management and water pollution that has resulted in contamination of the aquatic environment.   The findings are alarming because Rohu is a very popular freshwater fish in India and its contamination by a serious pathogen can lead to a major public health hazard.  What is even more worrying is that these bacteria which are now in an aquatic system are capable of transferring drug-resistant genes to other commonly found bacteria like E Coli and make them much more difficult to treat.

The isolation of R ornithinolytica isolate with reduced susceptibility to antibiotics was relatively high in this study and in previously reported cases. Frequent hospital outbreaks of infection caused by the selection of multidrug-resistant R ornithinolytica strains have been reported worldwide.  The isolate in the present study was highly resistant to ampicillin, amoxicillin, clavulanic acid, tetracycline, doxycycline, co-trimoxazole, rifampicin, kanamycin, trimethoprim, oxytetracycline, colistin and pefloxacin, which confirmed its multidrug-resistant nature.
As R ornithinolytica has the potential to be regarded as an emerging opportunistic pathogen and these bacteria are known to transmit antibiotic resistance genes in the food chain and environment, the emergence of this pathogen may cause the public health hazard, the scientists have also warned.


Virus turns a bane for shrimp farms in coastal districts

Enterocytozoon hepatopenaei  virus turns a bane for shrimp farms in coastal districts
Nellore: Enterocytozoon hepatopenaei (EHP) is an intracellular microsporidian parasite, first characterised and named in 2009 in Thailand, is still haunting vannamei shrimp farms in the state. The parasite, which affected 43 per cent of farms in 2014-15, is still found to be present in 21 per cent farms by March this year.  In fact, there are no specific symptoms to identify the EHP parasite which would have helped to follow a treatment or management protocol that can stop or interfere with transmission. An alert was sounded three years ago to enlighten the aqua farmers in the state on prevention of the parasite.  Teams from MPEDA (Marine Products Exports Development Authority), National Centre for Sustainable Aquaculture (NaCSA) and fisheries department have collected shrimp samples from all major aqua culture areas in the state.
Rand Aqua has successfully saved many ponds affected by EHP and broght to normal condition within 7 - 10 days.  We have our video testamonies besides we shall provide with client /  farmer contact details.  Please contact us if you are experiencing EHP and we are here with world class solutions for aquaculture.

Central Institute of Brackishwater Aquaculture (CIBA), a wing of ICAR, has also monitored spread of the parasite in around 400 farms across Andhra Pradesh and Tamil Nadu. They found that the parasite was present in around 43 per cent farms during 2015, 27 per cent in 2016, and 21 per cent till March this year.  So, to stop further spread of the parasite, the CIBA has taken up awareness sessions to the famers and companies as part of National Disease Surveillance Programme as the disease has been a growing concern in the Indian shrimp farming industry since 2015. The disease has been spreading to many regions in the country often associated with severe growth retardation in farmed shrimp.

“The parasite severely affects the growth of the shrimp. Horizontal transmission occurs very rapidly among shrimp in ponds due to thorough mixing. Accurate detection is extremely important to ensure biosecurity in shrimp hatcheries and farms.  The parasite reduces growth rate and increases the size variation in the shrimp population,” said Dr Shankar Avalandi, principal scientist, Aquatic Animal Health and Environment wing of CIBA.  The disease was widespread in China, Indonesia, Malaysia, Vietnam, and Thailand earlier. Gradually, it spread to coastal states in India where aqua farms are prevalent. Recently, CIBA developed a kit for detecting the existence of the parasite, which is now on sale. 

The institute signed an MoU with Thaper group recently who are establishing laboratories in Nellore and Bhimavaram for providing services as part of corporate social responsibility (CSR) to the farmers at an affordable cost. They say this parasite is more deadly when compared to White Spot, EMS and others that spread some time ago.  The farmers normally face losses due to diseases but this parasite affects slowly, which causes severe losses to them after two-three months. Meanwhile, they spend huge money on the crop and finally incur losses impacting their financial conditions. This can be avoided with early detection, say scientists.

 In an effort to create awareness among farmers on different viruses and parasites, Central Institute of Brackishwater Aquaculture developed an app -vanami app- for receiving queries from the farmers from across the globe and also to get information on the current situation. They have been answering them within 24 hours with specific solutions.  “Now, we are getting queries from growers and traders in 23 countries around the world and we are responding to them within 24 hours. The app is currently in English and we are planning to expand it in regional languages for convenience of the farmers.

Jagan promises MSP for aquaculture products

YSRCP president Y.S. Jagan Mohan Reddy addressing a public meeting at Ganapavaram in West Godavari district on Wednesday.

YSR Congress Party president Y.S. Jagan Mohan Reddy on Wednesday promised minimum support price (MSP) for aquaculture products.  Addressing a public meeting at Ganapavaram in West Godavari district as part of his Praja Sankalpa Yatra, Mr. Reddy said aquaculture farmers were in dire straits because the TDP government had least concern for them.

Power tariff

Aqua farmers were suffering huge loss because prices plummeted. This was because production was far more than demand. Farmers were forced to sell at below the remunerative price, he said. The YSRCP, on being elected to power, would set up as many food processing units as possible in the first three years. It would announce MSP for fish and prawn in the fourth year, Mr. Reddy said. High power tariff was another factor contributing to their loss, Mr. Reddy said, and added that his government would reduce the tariff on power supplied to the aqua farms from the present ₹3.86 per unit to just ₹1.50. “When neighbouring Odisha can give aqua farmers power at the rate of ₹1.50 a unit, why cannot Andhra Pradesh?” he asked.  Similarly, the per-unit cost of power to the allied sectors such ice factories and food processing units would also be reduced from ₹7 to ₹5, Mr. Reddy promised.

Kolleru resurvey

The YSRCP president said there were many flaws in the Kolleru Lake survey conducted by the TDP government in 1999. The YSRCP would order a resurvey soon after coming to power to rectify them, he said.  “A person who has good understanding of the Kolleru problem will be made an MLC. He will resolve all the issues,” Mr. Reddy said. Referring to the drinking water problem in the villages, he said it was because no water was coming from the upper reaches.