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Reproduction characteristic of female egg-carrying buntingi, Xenopoecilus oophorus had been studied. This researchwas conducted at Lake Poso, Central Sulawesi, Indonesia. Specimens were collected monthly from August 2012 to July2013 at four sampling stations around the lake. Macroscopic observations of ovarian maturity level and gonadosomaticindex revealed a long reproductive period during the rainy season, with four spawning peaks in November, January,February and April. The highest total fecundity was 135 oocytes, and the highest batch fecundity was 36 oocytes.Analysis of the oocyte diameter frequency distribution showed X. oophorus is a multiple spawner. Batch fecundity wascorrelated (r = 0.78) with body weight.Karakteristik Reproduksi Ikan Endemik Rono, Xenopoecilus oophorus betina, di Danau Poso, Sulawesi Tengah.Penelitian ini mempelajari karakteristik reproduksi ikan betina endemik rono, Xenopoecilus oophorus, betina di DanauPoso, Sulawesi Tengah. Penelitian dilakukan di Danau Poso Sulawesi Tengah, Indonesia. Sampel dikumpulkan setiapbulan mulai bulan Agustus 2012 sampai bulan Juli 2013 di empat stasiun. Berdasarkan pengamatan tingkat kematanganovarium secara makroskopis dan pengukuran indeks kematangan gonad, diketahui ikan rono memiliki waktu reproduksiyang panjang yang terjadi selama musim hujan. Pada periode reproduksi ini didapati empat puncak waktu pemijahanyakni bulan November, Januari, Februari dan April. Fekunditas tertinggi 135 oosit, sedangkan gugus fekunditastertinggi 36 oosit. Berdasarkan analisis sebaran frekuensi ukuran diameter oosit diketahui tipe pemijahan ikan ronopemijah berulang. Hubungan gugus fekunditas dengan bobot tubuh tanpa gonad berkorelasi positif (r = 0,78). |
