Observation of Water Quality Parameters on Induced Breeding of Bagrid Catfish in Bangladesh
DOI:
https://doi.org/10.54536/ajaset.v6i2.519Keywords:
Induce Breeding, Fertilization, Hatching Rate, Water Quality, Mystus TengaraAbstract
Induced breeding of Bagrid catfish, Mystus tengara, is not widely practiced in Bangladesh, and seed is not readily available. The study was conducted to identify the optimum range of water quality parameters to best induced breeding results in a hatchery in Pabna district, Bangladesh. Fish breeding and other related work have been done in the hatchery. The (mean ± SD) temperature, dissolved oxygen, and pH were ranged from 29.75±1.22oC to 33.94±0.18oC; 4.40±0.57 to 5.35±1.06 mg/l; and 7.10±0.14 to 7.40±0.28 in brood pond and 26.50±0.71oC to 31.00±1.41oC; 3.80±0.14 to 5.50±0.42; and 7.00±0.00 to 7.30±0.42 in overhead tank, respectively. The highest fertilization rate (80%) was observed in brood pond water at the 7th and 8th weeks at temperatures of 33.94±0.18o C and 32.00±1.07oC, as well as oxygen concentrations of 5.20±1.41 mg/l, 4.60±0.14 mg/l, and pH values 7.20±0.14, 7.20±0.00, respectively. In the 9th week of the experiment, the temperature, dissolved oxygen, and pH values of 28.00±1.41oC, 5.50±0.42 mg/l and 7.00±0.00, respectively, were shown to have the highest hatching rates. A strong positive correlation was found among dissolved oxygen, temperature, fertilization rate, and hatching rate. Particularly, the brood raising pond's water quality parameters showed a strong positive correlation with fertilization rate. On the other hand, water quality parameters of the overhead tank showed a strong positive correlation with hatching rate. This study will help hatchery technicians in comprehending the requirements for M. tengara species induced breeding in terms of water quality.
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