Combined effects of water exchange regimes and calcium carbonate additions on growth and survival of hatchery-reared juvenile spotted babylon (Babylonia areolata Link 1807) in recirculating grow-out system |
| |
| Authors: | S Kritsanapuntu,N Chaitanawisuti,W Santhaweesuk,& S Y Natsukari |
| |
| Affiliation: | Faculty of Technology and Management, Prince of Songkla University, Suratani, Thailand; Aquatic Resources Research Institute, Chulalongkorn University, Bangkok, Thailand; Faculty of Fisheries, Nagasaki University, Nagasaki, Japan |
| |
| Abstract: | To determine a suitable culture environment to maximize growth and survival, the hatchery‐reared juvenile spotted babylon, Babylonia areolata, were held in plastic rearing tanks at four calcium carbonate additions of 0, 100 and 300 g tonne?1, and four water exchange regimes of 0‐, 15‐, 30‐ and 60‐day intervals in a recirculating grow‐out system for 120 days. The results clearly showed that growth was greatest between water exchange regimes of 15‐ and 30‐day intervals and all calcium carbonate additions, with water exchange regimes of 0‐ and 60‐day intervals resulting in poor growth. Final survival was highest between water exchange regimes of 15‐ and 30‐day intervals, and all calcium carbonate additions, with water exchange regimes of 0‐day intervals and all calcium carbonate additions resulting in high mortalities. This study showed that water exchange regimes had a stronger influence on the growth of juvenile B. areolata than calcium carbonate additions. It is recommended that B. areolata juveniles be maintained within the water exchange regimes range of 15–30‐day intervals and at calcium carbonate additions between 0 and 500 g tonne?1, providing optimum conditions for production of this species in a recirculating grow‐out system. |
| |
| Keywords: | Babylonia areolata recirculating grow-out system calcium carbonate water exchange growth survival |
|
|
