...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>American Scientist >The Ultimate Mouthful: Lunge Feeding in Rorqual Whales
【24h】

The Ultimate Mouthful: Lunge Feeding in Rorqual Whales

机译：最终的满口：刺鼻的鲸鱼喂养

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A hungry fin whale dives deep into the ocean to perform a series of rapid accelerations with mouth agape into a dense prey patch. On each of these bouts, or lunges, the whale engulfs about ten kilograms of krill contained within some 70,000 liters of water-a volume heavier than its own weight-in a few seconds. During a lunge, the whale oscillates its tail and fluke to accelerate the body to high speed and opens its mouth to about 90 degrees. The drag that is generated forces the water into its oral cavity, which has pleats that expand up to four times their resting size. After the whale's jaws close, the sheer size of the engulfed water mass is evident as the body takes on a "bloated tadpole" shape. In less than a minute, all of the engulfed water is filtered out of the distended throat pouch as it slowly deflates, leaving the prey inside the mouth. Over several hours of continuous foraging, a whale can ingest more than a ton of krill, enough to give it sufficient energy for an entire day.
机译：饥饿的长须鲸潜入海洋深处，以快速的加速运动，嘴巴瞪着一个密密麻麻的猎物。在这些回合或弓步中，鲸鱼在几秒钟内吞没约70,000升水中的十公斤磷虾（比其自身重量重）。在冲刺过程中，鲸鱼摆动其尾巴和fl虫，以使身体加速至高速，并张开嘴巴约90度。产生的阻力迫使水进入其口腔，该口腔的褶皱膨胀至其静息大小的四倍。在鲸鱼的下巴闭合之后，吞噬的水团的绝对大小显而易见，因为它的身体呈“ blo肿”的形状。在不到一分钟的时间内，所有吞没的水在慢慢膨胀时从膨胀的喉咙小袋中滤出，将猎物留在嘴里。在连续几个小时的觅食中，鲸鱼可以摄取多于一吨的磷虾，足以为它提供一整天的能量。

著录项

  • 来源
    《American Scientist》 |2010年第2期|124-131|共8页
  • 作者

    Jeremy A. Goldbogen;

  • 作者单位

    Scripps Institution of Oceanography, University of California at San Diego, Marine Physical Laboratory (Whale Acoustics), 9500 Gilman Dr., La Jolla, CA 92093-0205;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
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