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Asian Journal of Animal and Veterinary Advances

Year: 2013  |  Volume: 8  |  Issue: 6  |  Page No.: 761 - 774

Induced Ovulation, Embryonic and Larval Development of Malaysian Mahseer, Tor tambroides (Bleeker, 1854) in Captivity

N.M. Azuadi, S.S. Siraj, S.K. Daud, A. Christianus, S.A. Harmin, S. Sungan and R. Britin

Abstract

The study was conducted to observed the embryonic development, morphology of eggs, newly hatched larve and post larval of the filial 1 (F1) generation of Malaysian mahseer, Tor tambroides using hatchery-reared specimens. The first cleavage occurred at 2 h after fertilization (HAF), epiboly began at 11 HAF, the embryonic body was formed at 22 HAF and hatched at 76 HAF. The mean total length of newly hatched larvae was 7.44±0.06 mm and almost has similar external features to other Tor species. The mouth and foregut opened at 7th Day after Hatching (DAH) with the mean total length of 12.8±0.11 mm. Tor tambroides reached 13.2±0.15 cm of total length and 31±0.53 g of body weight at 10 months of age. The induced ovulation technique using newly developed commercial synthetic hormone, Ovatide have paved the way for further development and improvement of culture production of the Malaysian mahseer.

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