海洋捕捞业的兼捕渔获(Bycatch)及其丢弃(Discards)是渔业上无法避免的问题,也是世界渔业管理上最令人烦恼的一个重大问题,早已被渔业科学家们所承认,并引起重视。由于鱼类的捕捞尚未处于完善的监控状态,网具对同一生活习性或摄食方式的物种无法做到选择性的捕捞,因此,任何一种网具的操作,都会捕到若干不具经济价值、不想要或 Bycatch and Discards in the marine fisheries are unavoidable problems in fisheries and one of the most troubling major issues in fisheries management in the world and have long been recognized and valued by fishery scientists . As the fishing of fish has not yet been fully monitored, it is impossible for selective fishing of species with the same habits or feeding habits. Therefore, the operation of any kind of fishing net will catch a number of non-economic value and do not want to Want or