Aquatic Animal Health

DR. JAWAHAR ABRAHAM. T

PUBLICATIONS

National: 131
International: 89
Popular Articles: 36
Manual: 06
Books/ Books Chapter: 25

STUDENT GUIDANCE

Master Degree: 37
Post Doctoral: 10

DR. GADADHAR DASH

PUBLICATIONS

National: 74
International: 53
Popular Articles: 97
Books/ Books Chapter: 13

STUDENT GUIDANCE

Master Degree: 32
Post Doctoral: 05

MR. PRASENJIT MALI

PUBLICATIONS

National: 18
International: 03
Popular Articles: 02
Manual: 03
Books/ Books Chapter: 03

STUDENT GUIDANCE

Master Degree: –
Post Doctoral: –

• Surveillance of 17 different cultured food fishes and 3 cultured shrimp/prawn species (economically important) and 10 different freshwater ornamental fish species.
• Documented the prevalence of OIE listed disease (WSV) and diseases of National concern such as Myxoboliasis, Argulosis, Thelohanellosis, Trichodiniasis, Dactylogyrosis, Ichthyophthiriasis, Aeromoniasis, and Vibriosis in West Bengal.
• Three different types of vertebral deformities such as lordosis, scoliosis and fish opercula deformity syndrome (FODS)
• Total 34 nos. of diseases had been identified among them, bacterial 08, parasitic 15, viral 01, fungal 01, Nutritional disorders 06, Stress mediated diseases 03.
• 4 districts (5 blocks each) are fully covered under active surveillance.
• 6 districts (approx.10 blocks) are covered under passive surveillance.
• 10 nos of gene sequence (16S rRNA /18S rRNA) submitted to NCBI Gene Bank.
• Total 34 nos of awareness programs were conducted
• Total 24 nos of training (Officer’s & farmer’s level) were made.
• A total of 7 nos of research papers were published in various journals of National & International repute under the NSPAAD program.
• 07 nos of leaflets and 08 nos of training manuals were published in regional languages.
• 04 nos of PG students completed their thesis work under the NSPAAD program
• A total of 58 Farmers’ training programs and Awareness Camps have been completed, benefitting 6000 numbers of fish/Shrimp farmers and 58 Fishery Extension Officers.
• Submitted 443 nos of baseline data out of which (216 nos active and 227 nos passive), 532 nos of biological information sheets, and 03 nos of disease outbreaks information, and 174 nos of Hatchery information sheets to the NSPAAD website for the development of National Database. These information include both fish and shellfish.
• Farm Advisory services through Whatsapp, messages, e-mail, TV programs & over the telephone to the farmers/hatchery personnel’s/NGOS/Private entrepreneurs through which a strong rapport has been developed among the fish/shrimp farming community and also with the Govt. Machinery.

1. The effect of oral oxytetracycline (OTC)-therapy against β-haemolytic Aeromonas hydrophila and α-haemolytic A. caviae by two challenge routes, wound healing and histopathological alterations in the kidney of Nile tilapia Oreochromis niloticus juveniles were evaluated. The degree of wound healing was faster initially in OTC treated tilapia, but the wounds were healed completely even in the surviving untreated fish within 30 days.
2. The safety of OTC-dosing in niloticus at the approved dose and dosage of 80 mg/kg biomass/day for 10 consecutive days (1X) and compared with control.

• In OTC-fed fish muscle, the residues peaked on day 10 OTC-dosing (161.40 ng/g) and decreased thereafter.
• The linear regression analysis revealed the complete residual elimination on day 40 post-OTC dosing.
• The residue levels accomplished the permissible limit of the European Commission on day 6 post-OTC dosing.
• Relatively mild histopathological lesions were observed in the kidney.
• A significant dose-dependent reduction in fish biomass (5.84-8.16%) during the dosing and post-OTC dosing periods was observed.
• The serum biomarkers like serum glucose, aspartate aminotransferase, alanine aminotransferase, creatinine, and C-reactive protein of Nile tilapia increased significantly on day 10 OTC-dosing. Their levels subsequently reduced and became normal on day 25-42 post-OTC-dosing at the approved dose and dosage.
• The results demonstrated that oral OTC-dosing in tropical climate influences the physiological state of apparently healthy Nile tilapia in a dose-dependent manner.
• The dietary influences of an antiparasitic drug emamectin benzoate (EB) administered to Nile tilapia Oreochromis niloticus at 0, 50 and 500 µg/kg biomass/day, i.e., control, 1X, and 10X the recommended dose of 50 µg EB/kg biomass/day (X) for 7 consecutive days were examined.
• The levels of all serum biomarkers of fish increased significantly on day 7 EB-dosing. Their levels consequently reduced and became normal on day 28-45 post-EB-dosing at the recommended dose.
• The effects of EB on the serum biomarkers are
• It, however, took about 45 days to become normal at the recommended dose with a biomass reduction of about 6.91%. This raises issues on the effectiveness of oral EB-dosing in a tropical climate.