...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine biology >Reconstructing climate-growth relations from the teeth of a marine mammal
【24h】

Reconstructing climate-growth relations from the teeth of a marine mammal

机译：从海洋哺乳动物的牙齿重建气候与生长的关系

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

Sclerochronological analysis of growth increment patterns (growth layer groups; GLG) in marine mammal teeth offers a unique opportunity to reconstruct climate-growth relations of marine mammal populations over long time series. We developed sclerochronologies from GLG width measures in the cementum of male and female New Zealand fur seal (Arctocephalus forsteri) post-canine teeth collected from southern Australia. Tooth growth chronologies spanned 15 years and encompassed the period from 1987 to 2001. We also developed a rigorous analytical framework for assessing species suitability for sclero-chronological analyses. Suitability assessments indicated that GLG clarity and relative width measures were variable among regions within individual teeth, and therefore, measurements were standardised to a consistent tissue type. Deposition of cementum in post-canine teeth was also correlated with body size, suggesting tooth growth measures were a suitable proxy of somatic growth. Inter-annual patterns of tooth growth were negatively correlated with mean annual sea surface temperature and the Southern Oscillation Index (both lagged by 1 year), but the strength of the relationships differed between the sexes. These results suggest both local-and regional-scale physical processes influence variations in growth and provide the first evidence of an environmental effect on cementum growth in a marine mammal. This study demonstrates the underutilised potential of marine mammal teeth to provide extended time series of growth, critical information which facilitates predictions of future ecological response to environmental change.
机译：对海洋哺乳动物牙齿中的增长增量模式（生长层组； GLG）进行年代年代学分析，提供了一个独特的机会来重建长期序列中海洋哺乳动物种群的气候－生长关系。我们根据从澳大利亚南部采集的雄性和雌性新西兰海狗（Arctocephalus forsteri）犬牙的牙骨质中的GLG宽度度量开发了硬化年代学。牙齿的生长时间跨度为15年，从1987年到2001年。我们还开发了一套严格的分析框架，以评估物种是否适合进行年代学分析。适宜性评估表明，GLG的清晰度和相对宽度测量值在单个牙齿内的区域之间是可变的，因此，将测量值标准化为一致的组织类型。犬后牙牙骨质的沉积也与体型相关，这表明牙齿生长的措施是体细胞生长的合适替代。牙齿生长的年际格局与年平均海表温度和南方涛动指数（均落后一年）呈负相关，但两性之间的关系强度不同。这些结果表明，局部和区域尺度的物理过程都会影响生长的变化，并提供环境影响海洋哺乳动物牙骨质生长的第一个证据。这项研究表明，利用海洋哺乳动物的牙齿提供未得到充分利用的潜力，可以提供延长的生长时间序列，这是有助于预测未来对环境变化的生态反应的关键信息。

著录项

  • 来源
    《Marine biology》 |2016年第4期|71.1-71.11|共11页
  • 作者

    Wittmann Talia A.; Izzo Christopher; Doubleday Zoe A.; McKenzie Jane; Delean Steven; Gillanders Bronwyn M.;

  • 作者单位

    Univ Adelaide, Sch Biol Sci, Southern Seas Ecol Labs, Adelaide, SA 5005, Australia;

    Univ Adelaide, Sch Biol Sci, Southern Seas Ecol Labs, Adelaide, SA 5005, Australia;

    Univ Adelaide, Sch Biol Sci, Southern Seas Ecol Labs, Adelaide, SA 5005, Australia;

    235 Robin Rd, Semaphore, SA 5019, Australia;

    Univ Adelaide, Sch Biol Sci, Adelaide, SA 5005, Australia;

    Univ Adelaide, Sch Biol Sci, Southern Seas Ecol Labs, Adelaide, SA 5005, Australia;

  • 收录信息
  • 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