BIOLOGI REPRODUKSI IKAN BELIDA (NOTOPTERUS NOTOPTERUS PALLAS, 1769) DI KOLONG-BENDUNGAN SIMPUR, PULAU BANGKA
ABSTRACT: The knowledge of
fish reproduction is the most important in freshwater management continously.
The research was done from February-July 2013, was aiming to describe
information on reproductive aspects of belida fishes (Notopterus
notopterus),i.e. sex ratio, gonado somatic stages, gonado somatic index, first
size of maturity, fecundity, and spawning type. The fish Samples was taken by
gill net which had many sizes such as 2, 2.5, 3, and 4 cm. Each gill net has
length 30 m and width 2 m. Belida fishes have caught during research amounted
497 ind, which consisted of: 237 male and 260 female. Sex ratio male and female
fish were relatively balance. The maturity gonad of male fish is faster than
female fish. Featherback do spawn every month for each observation during the
research. The spawning type of Featherback is partial pattern (step by step). The
first size of maturity gonad from male fish was in length 135 mm and female
fish was in length 162 mm. Fecundity of Featherback was in range 1.051-6.057
eggs. Fecundity is not influenced by length or weight body. For the sake to
keep Featherback population needed a regulation, such as: the mesh size
regulation of gillnet have to 30 mm or equal with 1.5 inci.
Penulis: Andi Gustomi,
Sulistiono, Yonvitner
Kode Jurnal: jppertaniandd160106