POLA LINGKARAN PERTUMBUHAN OTOLITH IKAN GABUS (Channa Striata) DI PERAIRAN SUNGAI SIAK PROVINSI RIAU
Abstract: This research was
conducted from July to September 2008. It was aimedto understand the growth
rings pattern in the otolith of Channa striata. Thirthyfour fishes were
collected with variations sizes. Growth rings pattern in the otolithwas studied
by shaving the otolith, following methods described by Windarti(2007). The
number of rings were counted and their pattern were described.Results shown
that growth ring pattern in the otolith is varied, the ringsare consisted of
thick and thin rings. Many fishes have several thick rings aroundthe nucleus of
the otolith, while few fishes have thin rings around the nucleus.These data
shown that many fishes faced growth related problems when they areyoung as it
is indicated by the presence of thick rings around the nucleus. It ispredicted
that small/young fish may not be able to tolerate water quality changingdue to
the presence of pollutant.
Key words: Channa striata,
Otolith, Growth ring, Siak River
Penulis: Ridwan Manda Putra
Kode Jurnal: jpperikanandd090088