Wullur, Stenly and Lahope, Hety B. and Rumengan, Inneke F. M. and Pangkey, Henneke and Rimper, Joice R. T. S. L. and Kaligis, Erly
(2013)
Colurella sp.cf. adriatica (Rotifera:Ploimida) a new promising live food for larval rearing of marine tropical fish.
Seminar Tahunan ke-2 dan Workshop Bioteknologi Kelautan Perikanan. Manado, 16-18 September 2013.
Abstract
Current procedure in rearing larvae of marine fish is using SS-type rotifer Brachionus plicatilis sp. complex as first food during early development stage of the larvae. But larvae of some marine tropical fish species including groupers are difficult to consume the SS-type due to larval extremely small mouth size. Present study is aimed to isolate minute rotifer and to investigate its usability as live food for fish larvae. An extremely small body size of rotifer was successfully isolated from a brackish pond located at Tumpaan, North Sulawesi. The rotifer was identified as Colurella sp.cf. adriatica (Rotifera: Ploimida) with body size around 97.10±3.58 and 55.37±2.04 µm in length and width, respectively. The size is 1.7 times smaller and 18 times narrower than the SS-type. A clonal culture of Colurella sp.cf adriatica was successfully mass propagated based on Nannochloropsis oculata as food source. Population density of Colurella sp.cf. adriatica using such food source reached density of about 461 individual/mL during 12 days culture period. Feeding trial to grouper larvae provide evidence that the larvae fed Colurella sp.cf. adriatica indicated by the presence of rotifer inside gut of the larvae.
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