Experiencing the seasonal variation and rapid global warming in the tropical climate is a common phenomenon which challenged the aquatic organisms to adapt the physiology and behavior. To investigate the effect of high-temperature acclimation, we selected Indian major carp, rohu (Labeo rohita), a commercially important freshwater aquaculture species. Oxygen consumptions, micronucleus formation in erythrocytes, and gill histopathology were observed in L. rohita fingerlings acclimated at three temperatures (30, 33, and 36 °C) for 30 days. Results showed that the highest acclimated temperature (36 °C) induced higher oxygen consumption and increased frequency of micronucleus formation in erythrocytes. Severity of different histological alterations (hyperplasia, epithelial necrosis, telangiectasis, epithelial lifting, and hypertrophy of chloride cells) in the gills was found to be increased in the highest acclimated temperature (36 °C). These findings indicate the temperature induced adaptive responses and climate vulnerability in a changing environment.

在热带气候中经历季节变化和全球快速变暖是一种普遍现象，它挑战了水生生物适应生理和行为的能力。为了研究高温驯化的影响，我们选择了印度主要鲤鱼（Rohu rohita），这是一种商业上重要的淡水养殖品种。在罗希塔乳杆菌中观察到耗氧量，红细胞中微核的形成以及g的组织病理学鱼种在三种温度（30、33和36°C）下适应30天。结果表明，最高的适应温度（36°C）导致较高的耗氧量和增加的红细胞微核形成频率。发现在最高适应温度（36°C）下，ill中不同组织学改变的严重程度（增生，上皮坏死，毛细血管扩张，上皮抬升和氯化物肥大）会增加。这些发现表明在变化的环境中温度引起的适应性反应和气候脆弱性。