Growth, Survival and Biomass of Etroplus suratensis in Shallow Water Cages Installed at Gopalpur Creek, Bay of Bengal, India


Authors : N. K. Sial; G.C. Kund; D. Satapathy

Volume/Issue : Volume 6 - 2021, Issue 7 - July

Google Scholar : http://bitly.ws/9nMw

Scribd : https://bit.ly/3xvKf7G

With an intention to integrate artisanal level of capture based aquaculture with the sustainable management practices of small scale fisheries an attempt has been made through this study to collect juveniles and sub adults of Pearl spot Etroplus suratensis from Gopalpur creek and to stock in small cages installed in the same waterbody to observe its growth so as to develop a package of practices for local fishers as an option of additional income. Three sets of cages with three replicas of each one were fixed and sub adults of Etroplus suratensis were stocked at the rate of 15, 20 and 25 nos per m2 for a period of 150 days. During the period of experiment temperature fluctuated from 24.6- 31.8oC, water pH from 8.1- 8.5, Water transparency from 14.2 – 32.9 cm, Dissolved oxygen from 5.0- 6.9 ppm, and water salinity from 5.3- 21.3 ppt in the cage installation site. The daily growth rate (DGR) marked a fluctuation from 0.347 to 0.593 g/day while the specific growth rate (SGR) fluctuated from 0.48 to 0.75%. More production was obtained from cages stocked with more stocking density

Keywords : Gopalpur Creek, Etroplus Suratensis, Shallow Water Cage, Daily Growth Rate, Specific Growth Rate, Survival and Biomass

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