Shuranova Zh P, Vekhov A V, Burmistrov Iu M
Zh Vyssh Nerv Deiat Im I P Pavlova. 1993 Nov-Dec;43(6):1159-69.
Sudden changes of the environment such as a short-lasting shadowing of an animal, placing of some small objects into the tank, light vibrations of the bottom etc. Caused vegetative responses in the freely moving native crayfish Astacus astacus and the American crayfish Procambarus cubensis adapted for many generations to aquarium habitat. We observed mainly a sudden decrease of ECG-frequency correlated with similar changes in the electrical activity of the muscles moving the specific ventilatory appendages, scaphognathites (scaphognathite-gram, SGG). Rise of the ECG and SGG rate was shown during and after the illumination of dark-adapted animals. The rate changes could be coincided with different changes of the amplitude of both ECG- and SGG-waves. It should be noticed that these vegetative responses took place mostly without any body movements of the animal. We suggest that the crayfish responses to sudden environmental changes are similar to mammalian orienting response; probably they also include an emotional component.
环境的突然变化，如对动物进行短暂遮光、在水族箱中放置一些小物体、底部的光线振动等，会引起自由游动的本地螯虾（Astacus astacus）和已适应水族箱环境多代的美国螯虾（Procambarus cubensis）的植物性反应。我们主要观察到心电图频率突然下降，这与移动特定呼吸附肢（颚舟片，scaphognathite-gram，SGG）的肌肉电活动的类似变化相关。在对暗适应动物进行光照期间和之后，心电图和SGG速率会上升。速率变化可能与心电图和SGG波幅的不同变化同时出现。应当注意的是，这些植物性反应大多在动物没有任何身体动作的情况下发生。我们认为，螯虾对环境突然变化的反应类似于哺乳动物的定向反应；可能它们也包括情感成分。
