The effect of hooking on thickness and length of branch line in fishing gear of long line at the coastal waters

Abstract

As abasic study to improve hooking ability of long line fishing gear, which is widely used around Jeju -docoast, the researcher performed hooking experiment of parrot fish by manufacturing and installing 7 kinds ofmodel long line fishing gears, whose thickness of branch line are different and 8 kinds of model long linefishing gear, whose length of branch line are different, in indoor circular aquarium , which is installed for themodel experiment of thickness and length of branch line that are various by fishing implement and improper.The hooking rate depending on thickness and length of branch line was calculated and the effect of thicknessand length of branch line on hooking rate was analyzed . Its results are as follows. When branch line was thinand long , high hooking rate appeared . In the scope of value setting , the relationship between thickness (