首页> 美国政府科技报告 >Deep-Water Longline Experimental Survey for Giant Grenadier, Pacific Grenadier, and Sablefish in the Western Gulf of Alaska.
【24h】

Deep-Water Longline Experimental Survey for Giant Grenadier, Pacific Grenadier, and Sablefish in the Western Gulf of Alaska.

机译:阿拉斯加西海湾巨型掷弹兵,太平洋掷弹兵和黑貂鱼的深水延绳钓实验调查。

获取原文

摘要

An experimental bottom longline survey was conducted at depths > 1,000 m in the western Gulf of Alaska in August 2008. The objective was to investigate the abundance and biological characteristics of giant grenadier (Albatrossia pectoralis) and sablefish (Anoplopoma fimbria) in deep waters of the Gulf of Alaska that have not been previously sampled in fishery surveys. Several difficulties were encountered during fishing operations highlighting the unique challenges that may occur when fishing longlines at these depths, including substantial gear drift after setting and hang-ups on the bottom that caused the longline to break. Catch rates of giant grenadier were relatively high, although not as large as those in nearby longline survey stations in depths 1,000 m. Pacific grenadier (Coryphaenoides acrolepis) were caught in substantial numbers at depths > 1,000 m, but were not caught at depths < 1,000 m.

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号