Pitcher T J, Partridge B L, Wardle C S
Science. 1976 Nov 26;194(4268):963-5. doi: 10.1126/science.982056.
Vision is not required in order for fish to school. Five individual saithe, Pollachius virens, were able to join schools of 25 normal saithe swimming in an annular tank, while blinded with opaque eye covers. Test fish maintained position within the school indefinitely and responded to short-term movements of individuals within the school, although quantitative differences in reaction time and schooling behavior were noted. Five fish with lateral lines cut at the opercula were unable to school when wearing opaque eye covers. Although it is unlikely that blind saithe could school in the wild, the constraints of the apparatus permitted a demonstration of a role of the lateral line organ in schooling.
鱼类聚集成群并不需要视觉。五条单独的黑线鳕（Pollachius virens），在被不透明眼罩遮住眼睛的情况下，能够加入在环形水箱中游泳的25条正常黑线鳕组成的鱼群。实验鱼能在鱼群中无限期保持位置，并对鱼群中个体的短期移动做出反应，尽管在反应时间和集群行为上存在数量差异。五条在鳃盖处切断侧线的鱼，在戴上不透明眼罩时无法聚集成群。虽然失明的黑线鳕在野外不太可能聚集成群，但实验装置的限制使得能够证明侧线器官在集群中的作用。
