• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polar biology >Seasonal variation in body condition of adult male hooded seals (Cystophora cristata) in Skjalfandi-Bay, northeast Iceland
【24h】

Seasonal variation in body condition of adult male hooded seals (Cystophora cristata) in Skjalfandi-Bay, northeast Iceland

机译：冰岛东北部Skjalfandi-Bay的成年雄性带帽海豹（Cystophora cristata）身体状况的季节性变化

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

This study examined seasonal changes in blubber distribution and body morphology of 61 male hooded seals, 4 years of age and older, caught in Skjalfandi-Bay in northeast Iceland in May, August and October during 1998 and 1999. Seasonal changes were found in girth, blubber depth and the ratio of blubber depth to body radius (d/r ratio). The seals lost 16% of their total mass between May and August, during moulting, but d/r ratios did not drop significantly. Hooded seals caught in October were 10% heavier than seals caught in August mostly due to greater sculp mass but were not as heavy as seals caught in May that had a higher core mass (mass-sculp). Core mass decreased by 14% between May and August or almost proportionally to total mass but increased much more slowly than total and sculp mass between August and October. Furthermore, this study found that commonly used condition indices are misleading when comparing condition of adult male hooded seals between seasons.
机译：这项研究调查了1998年和1999年5月，8月和10月在冰岛东北部Skjalfandi-Bay捕捞的61只4岁及以上的雄性带帽海豹的脂分布和身体形态的季节性变化。润滑脂深度和润滑脂深度与车体半径之比（d / r比）。在换羽过程中，海豹在5月至8月间损失了其总质量的16％，但d / r比没有明显下降。 10月捕获的带帽海豹比8月捕获的海豹重10％，这主要是由于雕刻质量较大，但不如5月捕获的具有较高核心质量（质量雕刻）的海豹重。在5月至8月之间，岩心质量下降了14％，或几乎与总质量成比例，但在8月至10月之间，岩心质量的增长速度比总质量和雕刻质量慢得多。此外，这项研究发现，在比较不同季节的成年雄性带帽海豹的状况时，常用的状况指标会产生误导。

著录项

相似文献

  • 外文文献
  • 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