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Waste‐grown phototrophic bacterium supports culture of the rotifer, B rachionus rotundiformis
Author(s) -
Loo Poh L,
Chong Ving C,
Vikineswary Sabaratnam,
Ibrahim Shaliza
Publication year - 2016
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/are.12750
Subject(s) - rotifer , pome , biology , brachionus , food science , brachionus calyciflorus , phototroph , bacteria , botany , ecology , photosynthesis , genetics
The present and commonly used batch culture system ( BCS ) as adopted by many small‐scale tropical hatcheries is beset by poor rotifer production and sudden crashes. This study aimed to produce nutritive rotifers and evaluate their performance based on the BCS by using phototrophic bacteria ( PB ) that can be easily and cheaply cultured from palm oil mill effluent ( POME ), an agro‐industrial byproduct usually discarded as waste. B rachionus rotundiformis given a sole diet of POME ‐grown PB ( R hodovulum sulfidophilum ) grew as well as on the commercially produced microalgae, N annochloropsis . Production, growth rate and fecundity of rotifers fed condensed bacterial cells ( bPB ) and culture broth of bacteria grown in POME ( cPB ) were evaluated. The best performance in terms of the stated parameters was obtained for rotifers fed 200 mL of cPB in 3 L of culture water; this media sustained a mean rotifer density of 600–900 individuals mL −1 after 3–6 days of culture. The biochemical composition of rotifers fed PB was comparable to those fed microalgae, except that the former contained more polyunsaturated fatty acids.