| 拖网囊网网目及其对东海带鱼选择性的研究 |
| |
| 引用本文： | 芮少麟.拖网囊网网目及其对东海带鱼选择性的研究[J].水产学报,1984,8(4):294-303. |
| |
| 作者姓名： | 芮少麟 |
| |
| 作者单位： | 黄海水产研究所 |
| |
| 摘 要： | 本文介绍了东、黄海拖网囊网网目的套网系列试验结果，指出当带鱼的刺鱼体周相当于网目内周时，其体长一般大于这种网目对带鱼的50％选择体长。文中比较了按照刺鱼体周求算网目内径同用50％选择体长决定网目内径的不同之处。根据网目内径与刺鱼体长的相关式，提出保护东海带鱼资源的拖网囊网最小网目内径为56毫米，并依据网目的选择性及带鱼的生物学资料，讨论了采用这一网目尺寸的可行性。
|
| 关 键 词： | 网目尺寸 拖网 鱼体 带鱼 体长 海带 东海 |
ON THE SELECTIVITY OF TRAW L COD-END MESH FOR THE DONG HAI SEA POPULATION OF HAIRTAIL |
| |
| Rui Shaolin.ON THE SELECTIVITY OF TRAW L COD-END MESH FOR THE DONG HAI SEA POPULATION OF HAIRTAIL[J].Journal of Fisheries of China,1984,8(4):294-303. |
| |
| Authors: | Rui Shaolin |
| |
| Institution: | Huang Hai Fisheries Research Institute |
| |
| Abstract: | Thin paper presents a series of experimental results of the trawl cod-end with cover--net for hairtail in Doug Hai and Huang Hai Seas. The experiment indicated that the Length of fish caught generally more than 50% of selected length (L0.05)when the fish girth (the blocked position of the hairtail equal to internal circumfe-rents of the mesh. The difference between the internal circumference of the mesh caeulated from fish girth and the diameter of the mesh determined by the 50% of selected length were compared. For the purpose of protecting the resource of hairtail,the minimum internal diameter of cad-end mesh should be determined at 56mm. It is obtained from the interrelated formula concern with internal circumference of the mesh and the fish length. According to the selectivity of mesh and tho biological data of hairtail,the feasiblity of this mesh size was discussed. |
| |
| Keywords: | |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《水产学报》浏览原始摘要信息 |
| 点击此处可从《水产学报》下载免费的PDF全文 |
