Pembenihan Selektif Kerapu Bebek, Cromileptes altivelis Turunan ke-2 (F-2)
Abstract: The aim of this
experiment was to know the gonad development of humpback grouper Cromileptes
altivelis F-2 progeny. The F-2 progeny fishes were produced from selective
breeding and composed by Lot 1, Lot 2 and Lot 3. The fishes were reared in the
cylinder concrete tanks containing 75 m³, 10 m³ water and floating cages.
Fishes were fed with commercial dry pellet in addition with vitamin mix,
vitamin C and vitamin E. The result indicated that the mature gonad female of
F-2 grouper broodstocks have been achieved.
The female broodstocks with 590 g weight produced oocytes with diameter
more than 400 µm. Genetic analysis showed that grouper Lot 2 was homogenous,
did not find any polymorphism among individual fish, however Lot 1 and Lot 3
still showed high heterozygocity as 0.18 and 0.58, respectively.
Keywords: Cromileptes
altivelis, heterozygocity, individual selection
Penulis: Tridjoko, Haryanti
Haryanti, Ahmad Muzaki, Tatam Sutarmat
Kode Jurnal: jpperikanandd090003
