Pemeliharaan Ikan Beronang, Siganus gutatus sebagai Biokontrol Perkembangan Lumut, Chaetomorpha sp. dan Enteromorpha intestinalis di Tambak
Abstract: The aim of this
research was to control the growth of green algae (Chaetomorpha sp and
Enteromorpha intestinalis) by rabbit fish (Siganus gutatus) reared in
brackishwater ponds in different stocking density. The research was conducted
in the Research Station of Research Institute for Coastal Aquaculture, Marana,
Maros South Sulawesi for 100 days. Nine brackishwater ponds in the size 100 m2
(3 ponds), 125 m2 (3 ponds) and 150 m2 (3 ponds) with the green algae growth
were used respectively in this research. Group randomized design was used in
this research. This research use three stocking density of rabbit fish in
thriplicates that were (A) 20 ind/100m2 , (B) 30 ind/100 m2 (40 ind/125 m2),
and (C) 40 ind/100m2 (60 ind/150 m2), respectively. The rabbit fish used in this
research were 9.1+ 0.8 cm in length and 15+ 0,6 g in body weigth. The monitored
variables were body length and weigth, survival rate and water quality. The
result showed that the effect of stocking density not significantly different
on the growth of body length and weight and survival rate of rabbit fish reared
in brackishwater pond (P>0.05), but significantly different on the
productivity of rabbit fish (P<0.05). Green algae growth in the
brackishwater ponds could be controlled with the rearing of rabbit fish in the
stocking density 20 - 40 ind/100 m2.
Keywords: Green algae, rabbit
fish, stocking density, brackishwater ponds, growth, survival rate
Penulis: Suharyanto
Kode Jurnal: jpperikanandd090016
