Wullur, Stenly and Rumengan, Inneke F. M. and Letsoin, Petrus and Rimmer, M. A.
(2017)
BODY SIZE, POPULATION GROWTH AND LARVAL INGESTION OF
A MINUTE EURYHALINE ROTIFER COLURELLA SP ISOLATED
FROM AN INDONESIAN ESTUARY.
In: FISH & SHELLFISH LARVICULTURE SYMPOSIUM, September, 4-7 2017, Ghent University, Belgium.
Abstract
Current rearing procedures for marine finfish larvae involve feeding the rotifer
Brachionus rotundiformis during the initial development stages. However, B.
rotundiformis is regarded as too large an initial feed type for larvae of several
tropical marine fishes including groupers (Okumura, 1997; Knuckey et al.,
2004), Napoleon wrasse Cheilinus undulatus (Slamet and Hutapea, 2004) and
rabbitfish Siganus spp. (Juario et al., 1985). For grouper larvae, even when B.
rotundiformis is used as the initial feed, massive mortality related to poor feeding
is commonly observed. The small larval mouth size is widely suspected as a
cause of this mortality (Okumura, 1997; Wullur et al., 2009; 2011; Hagiwara et
al., 2014). This study investigated the potential use of a minute rotifer Colurella
sp., isolated from an estuary in North Sulawesi, Indonesia, as a starter food for
small-mouthed marine fish larvae.
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