萤光网线在光诱鱿鱼敷网的应用试验

本文报道了将萤光网线应用在光诱鱿鱼敷网的底网网衣及其近网口部位的试验,结果表明,这种做法能扩大该网具作业区域内的有效集鱼范围,提高诱引捕捞对象入网的效果。根据对2000年7月-2000年10月的海上生产472网次对比资料统计及比较:萤光网的夜平均产量增加10.6％,夜平均产值增加12.1％以上;由于渔场作业水深不同、渔获组成不同和捕捞对象不同,萤光网的捕捞效应也发生变化。本文还讨论了不同捕捞对象的趋光性能和背景光的影响等问题。

An Experiment on Application of Fluorescence Net Twine to Light-lift Nets for Fishing Loliginidae

This paper reported the application of fluorescence netting twine to bottom and adjacent area of a light-lift net for fishing Loliginidae. The experiment showed that it could enlarge the fishing area that the existed gear usually did and could increase the fishing effect of attracting the fishing target. According to the statistics of 472 compared haul experiments from July, 2000 to Oct., 2000; compared with the existed gears, the average catch of the experimental gear increased by 10.6% and the average value increase by 12.1% per night. The fishing effect will vary with the depth of different fishing area, the composition of the catches and the kinds of target species. This paper also discussed that different targets had their characters of trending to light and the background light had some effect on them too.