Successful demonstration of pen culture as climate resilient technology for Clam fishers in Kerala backwaters

        ICAR-Central Inland Fisheries Research Institute, Barrackpore under NICRA project successfully organized harvesting of black clam Villorita cyprinoides in climate resilient pens installed at Thycattussery village, Alappuzha district, Kerala State on 17th January 2019.

 

   

  

   

 

 

         The experimental pen made of bamboo and HDPE nets was of 114sq.m and divided into two compartments. The seeds collected from wild (Paathiramannal) were segregated to small clams (mean size 15 mm and mean weight of 1.46 g) and large clam (mean length of 22 mm and mean weight of 3.54 g) respectively. The small and large clams were stocked at the rate of 5000 nos/ sq.m and 2000 nos/sq.m respectively. Overall 650 kg of baby clams were cultured in the pens for a period of one year. The annual growth rate of clams in terms of length and weight was 14.23mm/ year and 47.98g/year respectively and a total of 2 tonne clams were harvested during one year of culture period. The programme also included the deshelling of clams with the help of female clam collectors. The meat and the shell was separated, washed and sold at Rs. 100/kg whereas the shell was sold at Rs. 3500/tonne. The study indicated that pen culture of clams could withstand the adverse impact of devastating flood during july-August 2018. The demonstration shows that development of Black clam culture through climate resilient technologies and adaptation strategies will not only help to cope up with adverse impact of climatic variability but also in increasing production, for sustainable livelihood and nutritional security to rural populace. This work was carried out with active support from Dr. B. K. Das, Director, ICAR-CIFRI.

       Dr. Uttam Kumar Sarkar, PI of the Project, highlighted the importance of pen culture as a climate resilient technology and emphasized on role of clam culture in reducing carbon emissions by transforming it to blue carbon. He also briefed the relevance of multi-trophic culture system to enhance production from these systems for added revenue and livelihood.

       The programme was attended by fifty fishers of Black Clam Industrial Co-operative Society, Thycattussery and its board members.


(Source: ICAR-Central Inland Fisheries Research Institute, Barrackpore )