NICRA Phase II
Phenology & Distribution: Zone wise studies were being carried out at Mangalore, Mumbai, Vizag, Mandapam and Chennai of selected marine species on parameters such as Mean size, Mode, Fecundity, Hepatosomatic Index, Gastro-somatic Index, Gonado-somatic Index, Food and Feeding, Sex Ratio, Spawning Season and Abundance (SST, SSS, BST, SSH, DO).
Spatio-temporal mapping of resources: Geocoded data collection of fishery resources were done along the coasts of Mangalore, Mumbai, Vizag and Tamilnadu and analysed for studies on reproductive stages and diet. The results of SST provided a baseline for correlation of environmental parameters with pelagic resources. Correlation studies were carried out on larval recruitment with climatic parameters (SST, Chl, Sea current). Abundance of jelly fish were also investigated with environmental parameters.
Carbon Footprint Assessment: Life Cycle Analysis of Kerala fishing harbours were done and harvest phase was found to be with highest C footprint. Blue carbon stock assessment of selected mangrove ecosystem of Kerala and carbon sequestration potential of seaweeds along Gulf of Mannar are being carried out.
Climate change projections (2020 - 2100): The climatic projections of the parameters SST, SSS, SLR, Pr, Chl and pH has been achieved for Indian Ocean for 2020 to 2100 as CMIP5 model output for different RCP scenarios.
Technology Development: Multivendor E-Commerce website and Android App has been developed to attain income improvement for coastal fishermen communities. Technology development initiated for mariculture of Kappaphycus alvarezii using vegetative propagation to yield higher harvest and the technology has been attempted at Kochi. Pretreatment and hydrolysis of seaweeds has been attained towards biofuel production pathway. Bio-char production from aquatic vegetation (seaweeds and water hyacinth) was done and its application as soil mixture and as fish feed resulted in enhanced growth of pokkali as well as tilapia fish.
Climate Resilient Village Development: Six coastal villages of Tamilnadu identified as vulnerable were adopted to develop as climate smart villages. Around 52 fishermen of 15 coastal villages of Thoothukudi district, Tamilnadu were empowered fishermen to harness positive impact of climate change by capture based aquaculture, sea cage farming of high-value fishes, low-cost cage construction, mooring of cages in the sea. Training programmes initiated to impart the already available technology of breeding of major marine ornamental fishes to small scale fishermen/farmers at Mandapam, Tamilnadu. Awareness programs and field demonstrations of cage culture of high value fishes and IMTA were conducted. Village in Kundapura, Karnataka has been demonstrated with climate resilient technologies. Wetland (5 acre) restored and made suitable for aquaculture at Kochi, Kerala.
NICRA Phase I
The biology and trophodynamics of Indian oil sardine, Indian mackerel, yellowfin tuna, skipjack tuna, threadfin bream, mullets, penaeid prawns, squid and green mussel were studied from all centres along the coast. Region-specific resources were also studied at different centres.
Biological indices and activity were related to different environmental parameters with particular emphasis on SST, rainfall and chlorophyll.
An attempt was made to study the seasonal and long term variation in feed composition of mackerel and its relationship with sea surface temperature.
Impact of SST on pelagic fishes and demersal fisheries was studied from Veraval.
Parallels were drawn between key environmental variables such as SST and total catch in particular regions.
Studies on the influence of changing climate on the fecundity of various stock fishes were carried out.
Studies were carried out on the suitability of habitats for various marine resources and the pressures exerted on them due to climate change.
Criteria was developed for vulnerability assessment of fish stock along Indian coasts and vulnerable species were identified across regions and adaptation strategies for the species identified.
Carbon footprint in Life Cycle of marine fisheries and related activities of Andhra Pradesh, Chennai and Tuticorin were analysed and published.
Assessment of the vulnerability of fisherfolk to the effects of climate change was performed.
Technology Demonstration Activities
- In order to find out the response, especially of spawning, the hatching success and larval survival of cultivable species and live feed organisms to different seawater temperature, experiments were conducted on 3 species of microalgae, 1 species of copepod, 1 species of shrimp, 1 species of sand lobster, 5 species of ornamental fish and 2 species of food fish.
- Growth and multiplication of rotifers at different temperatures with algal feeds were assessed.
- Impact of temperature and salinity on the embryonic development of Cobia and larviculture was assessed.
Experiments of climate resilient live feeds suitable for larviculture of Cobia and silver pompano was performed.
- Trials on pen farming with milkfish Chanos chanos was done.
- Experimental studies were conducted on carbon sequestration potential of seaweed at Mandapam.
- Experimental cage farming of silver pompano Trachinotus blochii fed with low value fishes was carried out.
- Trials on Integrated Multi Trophic Aquaculture (IMTA) by integrating the seaweed Kappaphycus alvarezii with cobia was done.
- Experimental studies carried out on impact of increased temperature on growth, associated bacterial flora and histopathological changes in silver pompano.
- A large number of fishermen and entrepreneurs were trained in all-weather mooring of sea cages, development of low-cost cages and culture of fish in sea cages.
- Empowering the coastal fishermen to harness positive impact of climate change by capture based aquaculture (CBA) was done.
- Technology of sea cage farming of high-value fishes like Cobia and Silver pompano, low-cost cage construction, mooring of cages in the sea; mussel and seaweed farming and integration of cage farming with pokkali farming were demonstrated to fishermen and other stakeholders.
- Demonstration of cage culture potential for high value fishes like seabass (Lates calcarifer) and cobia (Rachycentron canadum) and Pompano (Trachinotus blochii) and conduct of awareness program was done.
- Integration of Scientific fin fish farming along with traditional Pokkali paddy cultivation at Ernakulam District of Kerala.
- Developed a formulated feed (Pearl Plus) for culturing Peal spot, Karimeen.
- Climate resilient food crops among halophytes identified.
- Participatory programmes in association with state government of Goa was carried out by Karwar research Centre of CMFRI.
- Owing to the success of NICRA Technology demonstration, the Fish Farmers Development Agency (FFDA) under the State Government initiated a scheme - Integrated fish farming in Pokkali fields through which the agency support fish farming both in open Pokkali fields and also in cages sited in Pokkali fields.
- Demonstration under Integrated Multi Trophic Aquaculture (IMTA) indicate yield of seaweed cultivation with cage farmed cobia as almost double the weight of seaweed when sea weed farming was done alone.
- Hands on Training programmes on marine cage farming was done for officials, fishermen communities and SHGs.
- Awareness program on cage culture practices in marine as well as brackish water areas were given to fishermen communities and women SHGs.
- Cage farming of Asian seabass, cobia and Pompano was carried out under participatory demonstration programme.