拖网中副渔获物分离栅的研究进展

Progress of studies on trawl sorting grids

由于拖网作业时选择性比较差,在捕捞目标种类的同时产生大量的副渔获物和抛弃,为此,世界上渔业发达国家在虾拖网和底层鱼拖网中,开发研究了副渔获物分离栅,取得了明显的效果。实践证明,拖网分离栅能够有效地提高拖网作业的选择性,降低副渔获物和抛弃,保护渔业资源,因此,许多国家通过立法使其被强制使用。文中笔者介绍了国外在分离栅方面的最新研究进展,为今后中国开展这方面的研究提供一些参考。

With less selectivity in trawling,there will be inevitably much by-catch and many discards during catching the target species. Sorting grids were developed well in shrimp and bottom fish trawl in developed countries. Trawl sorting grids can effectively enhance the selectivity of trawl,reduce by-catch and discards,protect fish resources, which are compulsively used in many countries by legislation.The progress of studies on trawl sorting grids abroad can be regarded as references to studies on this aspect in China.