Inter-specific hybridization between freshwater catfish <i>Mystus cavasius </i>(Ham & Buch) and <i>M. seenghala </i>(Sykes) by artificial fertilization

Abstract

By employing the technique of induced ovulation for artificial fertilization, inter-specific hybrids between the threatened catfish species (<i>Mystus cavasius </i>× <i>M. seenghala</i>) were produced. Fertilization, hatching and survival were significantly different between control and hybrids. The hatching time of the hybrid was significantly lower than that of the control. The average performance <i>viz., </i>hatching time and viability of larvae of the control fish, was significantly better than that of the hybrids. In the hybrid cross, hatchlings were mostly deformed and abnormal and after yolk absorption ultimately succumbed.