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首页> 外文期刊>Turkish Journal of Fisheries & Aquatic Sciences >Thermal Tolerance, Oxygen Consumption and Stress Response in Danio dangila and Brachydanio rerio (Hamilton, 1822) Acclimated to Four Temperatures
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Thermal Tolerance, Oxygen Consumption and Stress Response in Danio dangila and Brachydanio rerio (Hamilton, 1822) Acclimated to Four Temperatures

机译：Danio dangila和Brachydanio rerio（Hamilton，1822）适应四个温度的耐热性，耗氧量和应力响应

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摘要

In this study, we determine critical (CTMax) and lethal (LTMax) thermal tolerance, acclimation response ration (ARR), rate of oxygen consumption and stress in two potential ornamental fishes of the North Eastern Hill region of India, Danio dangila and Brachydanio rerio. The fishes were collected from wild and acclimatized at 18 degrees C for 30 days. The fishes were then constantly reared at temperature regime of 20, 25, 30 and 35 degrees C separately in insulated plastic tank for 45 days. Fishes from each rearing temperature were subjected to constant rate of increase at 1.0 degrees C/min to determine the thermal tolerance. The results implicate significant increase (p< 0.05) in CTMax (36.2+/-0.02, 37.7+/-0.31, 39.6+/-0.07, 40.9+/-0.10) and LTMax (38.1+/-0.08, 39.8+/-0.06, 40.0+/-0.07, 41.1+/-0.04) in D. dangila with increasing acclimation temperatures of 20, 25, 30 and 35 degrees C, respectively. Similarly, CTMax (36.4+/-0.05, 37.2+/-0.04, 38.7+/-0.03, 39.8+/-0.01) and LTMax (39.8+/-0.03, 40.4+/-0.02, 41.2+/-0.06, 42.2+/-0.03) increased significantly (p< 0.05) in B. rerio with increasing acclimation temperatures. Inter species variation was evident between the temperatures. Oxygen consumption rate increased (p< 0.05) with increasing temperature in both the species. Overall, our results suggest that B. rerio is more thermal tolerant and show better adaptation in comparison to D. dangila.
机译：在这项研究中，我们确定了印度东北丘陵地区Danio dangila和Brachydanio rerio的两种潜在观赏鱼的临界（CTMax）和致命（LTMax）热耐受性，适应反应率（ARR），耗氧率和压力。 。从野外收集鱼，并在18摄氏度下适应30天。然后将鱼分别在20、25、30和35摄氏度的温度下分别在绝缘的塑料罐中饲养45天。将来自每个饲养温度的鱼以1.0摄氏度/分钟的恒定速率进行加热，以确定其耐热性。结果暗示CTMax（36.2 +/- 0.02、37.7 +/- 0.31、39.6 +/- 0.07、40.9 +/- 0.10）和LTMax（38.1 +/- 0.08、39.8 +/-）显着增加（p <0.05） D. dangila中的0.06、40.0 +/- 0.07、41.1 +/- 0.04）分别随着20、25、30和35摄氏度的升高的驯化温度而升高。同样，CTMax（36.4 +/- 0.05、37.2 +/- 0.04、38.7 +/- 0.03、39.8 +/- 0.01）和LTMax（39.8 +/- 0.03、40.4 +/- 0.02、41.2 +/- 0.06、42.2） +/- 0.03）随环境温度的升高而在B. rerio中显着增加（p <0.05）。温度之间种间差异明显。在两个物种中，耗氧率均随温度升高而增加（p <0.05）。总体而言，我们的结果表明，与D. dangila相比，B。rerio具有更高的耐热性，并且显示出更好的适应性。

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