• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polar biology >Diet of ringed seals (Pusa hispida) from Northeast Greenland
【24h】

Diet of ringed seals (Pusa hispida) from Northeast Greenland

机译：东北格陵兰的环斑海豹（Pusa hispida）的饮食

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

The diet of ringed seals (Pusa hispida) from coastal and offshore areas of Northeast Greenland was determined by identifying, to the lowest taxonomic limit possible, all hard-part contents from the gastrointestinal tract of 51 seals sampled (2002-2004) in spring (April to June, N = 35) and autumn (September to October, N = 16). The autumn diet was characterized by high numbers of Parathemisto libellula, and the spring diet was comprised primarily of polar cod (Boreogadus saida), with few invertebrates consumed. The coastal seal diet samples had a diverse fish prey composition (during both the spring and autumn), whereas the open water seals had eaten mostly crustaceans with P. libellula being most abundant. The sample sizes from the various locations and seasons were not large enough to explore age-class effects on diet in addition. Similar to earlier studies, this study suggests that the ringed seal is a generalist that exploits prey based on availability, with a few key species dominating the diet in an area at least on a seasonal basis.
机译：东北格陵兰岛沿海和近海区域的环斑海豹（Pusa hispida）的饮食是通过确定春季的最低限度生物分类限度，即从2002年至2004年采样的51条海豹的胃肠道中确定所有硬质成分而确定的（ 4月至6月，N = 35）和秋天（9月至10月，N = 16）。秋季饮食的特点是大量的副寄生虫，春季饮食主要由极地鳕鱼（Boreogadus saida）组成，几乎没有食用无脊椎动物。沿海海豹的饮食样本（春季和秋季期间）的鱼类猎物组成各不相同，而开放水域的海豹主要吃了甲壳类动物，而利比里亚假单胞菌最为丰富。不同地点和季节的样本量不足以探讨饮食对年龄的影响。与早期的研究类似，该研究表明，环斑海豹是一种通才，可以根据可利用性来捕食猎物，至少在季节性基础上，一些关键物种在该地区的饮食中占主导地位。

著录项

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