Hong Won Hee, Choi Ji Yeong, Cho Han Seok, Im Jien, Park Se Chang, Seok Seung Hyeok, Kim Sang Wha
Laboratory of Aquatic Biomedicine, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Republic of Korea.
Aquaplanet Gwang-gyo, Gyeonggi-do, Republic of Korea.
J Aquat Anim Health. 2024 Dec;36(4):348-354. doi: 10.1002/aah.10237. Epub 2024 Dec 1.
This study aims to elucidate the cause of mass mortality in Golden Trevally Gnathanodon speciosus at an aquarium and reports the first instance of gas bubble disease (GBD) in the species. Identifying the factors leading to this mortality event is intended to propose preventive measures for avoiding similar occurrences in the future.
This case study involved the examination of Golden Trevally displaying symptoms of GBD, including abnormal swimming behavior, lethargy, and visible gas bubble formation in the cornea, aqueous humor, and oral mucosa. Necropsy and histopathology were conducted to assess the internal accumulation of gas bubbles in tissues. The etiology was investigated by analyzing the total dissolved gas (TDG) levels and inspecting the integrity of the water circulation system for structural defects.
The affected Golden Trevally exhibited significant symptoms of GBD. Necropsy and histopathology confirmed the presence of gas bubbles in various tissues throughout the body. The analysis suggested that TDG supersaturation was caused by excessive microbubble formation due to structural defects in the water circulation system.
This case highlights the importance of practical TDG monitoring and maintaining system integrity to prevent GBD in aquaculture. Effective management of TDG levels is crucial to safeguarding the health of captive aquatic species.
本研究旨在阐明一家水族馆中金钱鱼大量死亡的原因，并报告该物种首例气泡病（GBD）。确定导致此次死亡事件的因素，旨在提出预防措施，以避免未来发生类似情况。
本案例研究涉及对出现GBD症状的金钱鱼进行检查，这些症状包括异常游泳行为、嗜睡以及在角膜、房水和口腔黏膜中可见气泡形成。进行了尸检和组织病理学检查，以评估组织内气泡的积聚情况。通过分析总溶解气体（TDG）水平并检查水循环系统的完整性以查找结构缺陷，对病因进行了调查。
受影响的金钱鱼表现出明显的GBD症状。尸检和组织病理学证实全身各组织中均存在气泡。分析表明，TDG过饱和是由水循环系统结构缺陷导致的过多微气泡形成引起的。
本案例突出了实际监测TDG以及保持系统完整性以预防水产养殖中GBD的重要性。有效管理TDG水平对于保护圈养水生生物的健康至关重要。
