西伯利亚幼鲟对偶极子电场的避让行为研究

THE AVOIDING RESPONSE TO DIPOLE STIMULI IN JUVENILE STURGEON

研究利用人工偶极子电场来模拟生物电场刺激,对西伯利亚幼鲟的电感受能力进行了行为探究。结果显示西伯利亚幼鲟对本实验中的偶极子电场产生躲避行为,其平均感受阈值在2月龄为(457.5±32.5)μV/cm,3月龄为(29.5±2.5)μV/cm,7月龄为(10±1.0)μV/cm。这表明西伯利亚鲟鱼的电感受敏感性随个体的发育而增强,而这可能与电感受器官数量的增加有关(2月龄为2234±470,7月龄为5273±523)。

Here, the electrosensory responses of juvenile siberian sturgeon to electric fields simulated by dipole were studied. The results showed that the fish can avoid the dipole electric fields, and significant differences in avoiding thresholds were observed among different age groups. The mean avoiding threshold was （457.5±32.5） μV/cm at 2 months old, and it was （29.5±2.5） μV/cm at 3 months old, and it reached （10±1.0） μV/cm at 7 months old. The morphological observation showed that the electroreceptors increased from 2 month （2234±470） to 7 month （5273±523） old. These results suggest that the electrosensory sensitivity enhanced with increased electroreceptors in the development of the juvenile sturgeon.