Shark interactions in pelagic longline fisheries
Shark interactions in pelagic longline fisheries
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DOI：
10.1016/j.marpol.2007.05.001
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发表时间：
2008-01-01
期刊：
影响因子：
3.8
通讯作者：
Werner, Tim
中科院分区：
文献类型：
--
作者：
Gilman, Eric;Clarke, Shelley;Werner, Tim
在中上层延绳钓渔业中，鲨鱼的相互作用造成了重大的生态、经济和社会问题。更好地了解行业对鲨鱼相互作用的态度和做法有助于管理这些问题。关于渔民知识和避免鲨鱼的新战略的信息可能有益于鲨鱼和渔民。对八个国家的12个中上层延绳钓渔业进行的研究表明，根据鲨鱼是经济上的劣势还是优势，避免鲨鱼的激励措施沿着一个连续体各不相同。避免鲨鱼的做法是有限的，包括避免某些地区，当鲨鱼互动率高时移动，用鱼代替鱿鱼作为诱饵和更深的设置。一些针对非鲨鱼鱼种的常规渔具和方法有助于避免鲨鱼。鲨鱼驱避剂有希望;需要更多的研究和开发。开发专门设计的丢弃鲨鱼的设备可以改善鲨鱼释放后的生存前景，减少渔具丢失并提高船员的安全。随着对鲨鱼鱼鳍和鱼肉的开发不断扩大，需要改进数据收集、监测和预防性鲨鱼管理措施，以确保鲨鱼捕捞死亡率保持在可持续水平。(C)2007爱思唯尔有限公司保留所有权利。
Substantial ecological, economic and social problems result from shark interactions in pelagic longline fisheries. Improved understanding of industry attitudes and practices towards shark interactions assists with managing these problems. Information on fisher knowledge and new strategies for shark avoidance may benefit sharks and fishers. A study of 12 pelagic longline fisheries from eight countries shows that incentives to avoid sharks vary along a continuum, based on whether sharks represent an economic disadvantage or advantage. Shark avoidance practices are limited, including avoiding certain areas, moving when shark interaction rates are high, using fish instead of squid for bait and deeper setting. Some conventionally employed fishing gear and methods used to target non-shark species contribute to shark avoidance. Shark repellents hold promise; more research and development is needed. Development of specifically designed equipment to discard sharks could improve shark post release survival prospects, reduce gear loss and improve crew safety. With expanding exploitation of sharks for fins and meat, improved data collection, monitoring and precautionary shark management measures are needed to ensure that shark fishing mortality levels are sustainable. (C) 2007 Elsevier Ltd. All rights reserved.