1标志放流技术标志放流技术是一种研究鱼类洄游和鱼类资源的方法,先在鱼体做上标志,然后通过重新捕获标志鱼,根据标志放流记录和重捕记录,绘制鱼类标志放流和重捕的分布图,以推测鱼类游动的方向、路线、范围、速度和资源等状况,评价增殖放流的效果。1886年,Petersen等采用给鱼作标志的方法估算封闭水体中鱼类种群的大小和死亡率,标志放流技术由此发展起来。在河南省,该技术已经不同程度地应用到 1 Marking Releasing Technique Signage The technique of releasing a fish is a method of studying fish migration and fish resources by first marking the fish and then by re-capturing the mark fish, according to the mark discharge record and the catch record, drawing the fish mark release And recaptured distribution map, in order to speculate the direction, route, range, speed and resources of fish swimming and other conditions, evaluate the effect of proliferation and release. In 1886, Petersen et al. Used a fish-marking method to estimate the size and mortality of fish stocks in confined water bodies. In Henan Province, the technology has been applied to varying degrees