Focus of Research :
- Breeding and seed production of marine finfish
- Live feed culture
- Immunostimulants and probiotics in mariculture
Background :
I am working in the area of finfish breeding and seed production, fish production systems and live feed technology for mariculture. My research outputs include standardisation of breeding and seed production protocol for orange spotted grouper (Epinephelus coioides), Indian pompano (Trachinotus mookalee), John’s snapper (Lutjanus johnii) and golden trevally (Gnathanodon speciosus), which are indigenous, commercially important marine finfish species. I have also contributed to the development of re-circulatory aquaculture system for broodstock development and nursery rearing of marine finfish and, mass culture protocol for different species of copepods.
Education :
- Ph.D. 2012 Fish Pathology and Microbiology, CIFE, Mumbai
- M.F.Sc. 2005 Fish Pathology and Microbiology, CIFE, Mumbai
- B.F.Sc 2003 Fisheries Science, College of Fisheries, Mangalore (UAS, Bangalore)
Current Research Projects :
| No | Title | Funded By |
| 1 | Development of seed quality indices for farmed marine finishes | CMFRI |
| 2 | Captive breeding and seed production of important finfishes, shellfishes and other invertebrates for sustainable mariculture, fisheries enhancement, and conservation | CMFRI |
| 3 | All India Network project on Mariculture | ICAR |
| 4 | Standardization and development of farming methods for marine finfish, John’s snapper Lutjanus johnii in marine cages and earthen ponds | NFDB |
| 5 | Omics approaches in the Indian pompano, Trachinotus mookalee and the Indian edible oyster, Crassostrea bilineata (Magallanna bilineata) to develop genomic resources for ensuring sustainable aquaculture | DBT |
Awards & Recognitions :
- Dr. Hiralala Chaudhuri Gold medal for first position in MFSc programme of Fish Pathology and Microbiology of the academic year 2003-2005.
- PILLAY AQUACULTURE AWARD 2022 for Excellence in Aquaculture Research, Extension and Development (as Team leader) by Pillay Aquaculture foundation trust, Indian chapter.
- Shri. J.V.H. Dixitulu National award- 2022 for outstanding work in Fisheries/Mariculture Extension and Communication by Marine Biological Association (MBAI), Kochi, Inland Fisheries Society of India (IFSI), Barrackpore and Association of Aquaculturists (AoA), Bhubaneswar jointly.
- ICAR-CMFRI Excellence Award 2018 for successful breeding, larval rearing and seed production of Epinephelus coioides and Trachinotus mookalee
Publications:
- Ranjan, R., Megarajan, S., Xavier, B., Santhosh, B., Bathina, C.,Avadhanula, R.K., Ghosh, S., Ignatius, B., Imelda, J., Gopalakrishnan, A. 2022. Enhanced larval survival in orange spotted grouper (Epinephelus coioides) using optimized feeding regime. Aquaculture Research, 53 (9): 3430-3440. https://doi.org/10.1111/are.15850
- Ranjan, R., Megarajan, S., Xavier, B., Raju, S.S., Ghosh, S., Gopalakrishnan, A. 2019. Design and performance of recirculating aquaculture system for marine finfish broodstock development. Aquacultural Engineering, 85: 90-97. https://doi.org/10.1016/j.aquaeng.2019.03.002
- Ranjan, R., Megarajan, S., Xavier, B., Ghosh, S., Santhosh, B., Gopalakrishnan, A. 2018. Broodstock development, induced breeding and larval rearing of Indian pompano, Trachinotus mookalee, (Cuvier, 1832) – A new candidate species for aquaculture. Aquaculture, 495: 550-557. https://doi.org/10.1016/j.aquaculture.2018.06.039
- Ranjan, R., Megarajan, S., Xavier, B., Dash, B., Shosh, S., Muktha, M., Edward, L.L. 2017. Conditioning, maturation and year-round natural spawning of orange-spotted grouper, Epinephelus coioides (Hamilton, 1822), in re-circulating aquaculture system. Aquaculture Research 48, 5864-5873. https://doi.org/10.1111/are.13409
- Chintada, B., Ranjan, R., Babitha Rani, A. M., Santhosh, B., Sekar, M., Ghosh, S., Gopalakrishnan, A. 2023. Effects of salinity on survival, reproductive performance, population growth, and life stage composition in the calanoid copepod Acartia bilobata. Aquaculture, 563 (2): 739025. https://doi.org/10.1016/j.aquaculture.2022.739 025
