Science. 1983 Aug 19;221(4612):779-81. doi: 10.1126/science.221.4612.779.
If crayfish (Procambarus clarkii) are presented with food or threat stimuli, or both, their feeding behavior and escape from threat by tail flips show flexible patterns of interaction. If they are engaged in eating large, relatively immovable pieces of food, escape is inhibited, whereas if small pieces of food are being eaten, the probability of escape is enhanced. If escape occurs during a feeding bout, large pieces of food are usually released, but small ones are not. These observations suggest that the neural circuitry responsible for coordination of behavior in invertebrates may not be as simple as usually assumed.
如果小龙虾（Procambarus clarkii）面临食物或威胁刺激，或者两者兼而有之，它们的进食行为和通过甩尾来逃避威胁的行为会表现出灵活的相互作用模式。如果它们正在吃大的、相对不动的食物块，逃避行为就会受到抑制，而如果吃的是小的食物块，逃避的可能性就会增加。如果在进食过程中发生逃避行为，通常会释放大的食物块，但不会释放小的食物块。这些观察结果表明，负责协调无脊椎动物行为的神经回路可能并不像通常假设的那样简单。
