Herrera Natalia, Palacio Jaime, Echeverri Fernando, Ferrão-Filho Aloysio
Grupo de Química Orgánica de Productos Naturales (QOPN), Universidad de Antioquia, Medellin, Colombia.
Grupo de investigación en Gestión y Modelación Ambiental (GAIA), Universidad de Antioquia, Medellin, Colombia.
Toxicol Rep. 2014 Oct 31;1:909-914. doi: 10.1016/j.toxrep.2014.10.017. eCollection 2014.
Cyanobacterial blooms can affect a wide range of aquatic organisms due to the presence of toxic compounds. However, no study so far has shown the effects of natural blooms samples on the physiological parameters related to the ecology of . In this study we used a natural bloom sample obtained from a reservoir in Colombia to evaluate its effects on five parameters related to 's feeding behavior, swimming movements and physiology: second antennae movement (swimming), mandible movement (feeding), thoracic appendages (feeding), postabdomen movement (rejection of food particles) and heart rate (physiology). The results revealed significant changes in all parameters evaluated at two different concentrations of aqueous extracts of the bloom: second antennae movements increased significantly and there were significant reductions in mandibular movements, thoracic movements and heart rate. Although postabdominal movements showed high variability with no distinctive pattern between control and treatments, the reduction in the other parameters (such as heart rate over time) could possibly reflect an intoxication by microcystins or a behavioral response (e.g., feeding inhibition).
由于有毒化合物的存在，蓝藻水华会影响广泛的水生生物。然而，迄今为止尚无研究表明天然水华样本对与[生物名称]生态相关的生理参数的影响。在本研究中，我们使用了从哥伦比亚一个水库获取的天然水华样本，来评估其对与[生物名称]摄食行为、游动运动和生理相关的五个参数的影响：第二触角运动（游动）、颚运动（摄食）、胸附肢（摄食）、腹部后节运动（食物颗粒排斥）和心率（生理）。结果显示，在水华水提取物的两种不同浓度下，所有评估参数均有显著变化：第二触角运动显著增加，而下颚运动、胸部运动和心率显著降低。尽管腹部后节运动表现出高度变异性，对照组和处理组之间没有明显模式，但其他参数的降低（如心率随时间变化）可能反映了微囊藻毒素中毒或行为反应（如摄食抑制）。
