College of Fisheries, Assam Agricultural University, Raha, Nagaon, Assam 782103, India.
Department of Aquaculture, College of Fisheries, Dr. Rajendra Prasad Central Agricultural University, Dholi, Muzaffarpur, Bihar 843121, India.
Anim Reprod Sci. 2024 Sep;268:107577. doi: 10.1016/j.anireprosci.2024.107577. Epub 2024 Aug 12.
The development of new strategies for breeding indigenous fish species is of utmost importance in the wake of unfavorable weather events, as a result of climate change. Therefore, an attempt has been made to achieve artificial breeding of an indigenous barb, Puntius sophore. Two groups of juvenile fish, collected from the wild, were reared till sexual maturation. One group was reared under a natural photothermal regime and the other was reared under strictly controlled conditions with photothermal stimulation till sexual maturation and subsequently, hormonal stimulation with OVAFISH was also done for inducement of spawning. The spawning efficiencies were analyzed and the results in terms of latency period (6.74 Hrs), ovulation rate (92.2 %), fertilization rate (90.6 %), hatching rate (89.9 %), and spawning efficiency coefficient (Se) (0.828) were found better in Puntius sophore reared under the indoor controlled condition with photothermal manipulation and hormone administration compared to the group of fish which was reared under a natural photothermal with a hormonal stimulation. The results of this study demonstrate the captive artificial breeding of Puntius sophore spawners reared under a natural photothermal regime and controlled photothermal regime in indoor conditions. The outcome of the present study can be used for developing key strategies for a climate smart aquaculture for fish farmers.
在不利的天气事件和气候变化的背景下,开发本土鱼类的繁殖新策略至关重要。因此,我们尝试进行了本土湄公鱼的人工繁殖。从野外收集了两组幼鱼,并进行饲养直到性成熟。一组在自然光热条件下饲养,另一组在严格控制的条件下进行光热刺激,直到性成熟,随后用 OVAFISH 进行激素刺激诱导产卵。分析了产卵效率,结果表明,在室内控制光热条件下进行激素处理的湄公鱼饲养组的潜伏期(6.74 小时)、排卵率(92.2%)、受精率(90.6%)、孵化率(89.9%)和产卵效率系数(Se)(0.828)均优于在自然光热条件下进行激素处理的饲养组。本研究结果表明,可以在室内自然光热条件下和控制光热条件下饲养湄公鱼亲鱼进行圈养人工繁殖。本研究的结果可用于为鱼类养殖户制定气候智能型水产养殖的关键策略。