The grow-out of abalone (Haliotis squamata) at different shelter shape on growth and survival and its marine environmental influences at Lembongan Bay coastal waters

Abstract

Abalone has an economic value in the world. The larval rearing technique of abalone has produced successfully at Gondol Research and Development Institute for Mariculture, Bali, Indonesia. However, the grow-out of abalone has not well documented yet. The purpose of this experiment is to examine the shelter shape in relation to growth and survival for abalone (Haliotis squamata) grow-out culture in the tidal area. The shelter made from PVC piping. The shape of shelter as a treatment of this experiment was A) round; B) square and; C) without shelter. The data of growth and survival rate were analyzed using analysis of variance. The result showed that the shelter for the grow-out of abalone was significantly affected growth in terms of shell length and wet weight (P<0.05) while the survival did not influence (P>0.05). It seems that the shelter was correlated with the feeding behavior of abalone had resulted in different for their growing. The water quality such as salinity, dissolved oxygen, water temperature, and water current was within the optimal range for abalone. We found that round shelter shape is the best for grow-out abalone at the tidal area.