The effects of differences in water exchange on the productivity of glass eel stage in Anguilla bicolor bicolor culture

Abstract

Eel, Anguilla bicolor bicolor has an economic value for export commodity. Eel farming has been developed both of home to industries scales. However, the main problem during the glass eel culture is the low survival rate, characterized by high mortality. This condition is related to the culture technique that has not been established yet, especially water quality management. The research aims to determine the best water exchange during the culture of the glass eel on the survival, growth, and blood glucose. The different percentages of water exchange as a treatment were followed A) control (without water exchange); B) 20% of water exchange; C) 40% of water exchange; and D) 60% of water exchange. The water exchange has affected the survival, growth, and blood glucose (P<0.05). The ammonia, nitrite, and nitrate values during the culture period showed that the control was higher compared to the others. The water exchange of 40% is suitable for glass eel stage culture to obtain the best survival and growth.

Feeding frequency on survival, growth, blood glucose of glass eel, Anguilla bicolor bicolor cultured in a recirculating aquaculture system

“…The ranged of water quality parameters during the glass eel cultured at different feeding frequency.All data of ranging of the water quality parameters during the culture period of glass eel at different feeding frequency (Table1) are within the threshold for glass eel culture[21] …”

“…Shortfin eel, Anguilla bicolor bicolor is a catadromous fish where fish movements from aquatic habitats that different salinity (freshwater, brackish water, and seawater) [1]. Indonesia has six eels belong to Anguilla species are A. bicolor bicolor, A. marmorata, A. borneensis, A. celebesensis, A. interiosis and A. nebulosa [2] where the famous one is A. bicolor bicolor due to high market both local and export commodities [3]. A. bicolor bicolor is a carnivorous fish that containing high nutrients and delicious meat.…”