• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Polar biology >Thermal responses of two sub-Antarctic notothenioid fishes,the black southern cod Patagonotothen tessellata (Richardson, 1845)and the Magellan plunderfish Harpagifer bispinis (Forster, 1801), from southern South America
【24h】

Thermal responses of two sub-Antarctic notothenioid fishes,the black southern cod Patagonotothen tessellata (Richardson, 1845)and the Magellan plunderfish Harpagifer bispinis (Forster, 1801), from southern South America

机译：两种亚南极通知鱼类的热响应，黑南部帕塔哥塔顿TESELLATA（Richardson，1845）和Magellan Plunderfish Harpagifer Bispinis（Forster，1801），来自南美洲

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 Notothenioidei are a typical example of stenothermal fishes since most species have evolved and lived in Antarctic waters, where the water temperature is low and stable. This fact enabled them to evolve physiological characteristics related to cold. Nevertheless, some species came out of Antarctic waters a few million years ago and coped with more variable thermal regimes. This work aims to determine the thermal tolerance and preference of two sub-Antarctic notothenioid species found in Southern South America, Patagonotothen tessellata and Harpagifer bispinis, adding valuable information about thermal adaptation mechanisms. Experiments were conducted after exposing their juveniles for three weeks at 4, 7, 10 and 12 degrees C. Their thermal tolerance limits were established using the Critical Thermal Methodology and their acute thermal preferenda, employing a horizontal thermal gradient tank. Fishes acclimated to different exposure temperatures had small to intermediate thermal tolerance polygons (P. tessellata: 593.85 degrees C-2, H. bispinis: 475.40 degrees C-2) and positive relationships between preferred and acclimation temperatures. The Final Temperature Preferenda were estimated to be 14.25 degrees C for P. tessellata and 13.05 degrees C for H. bispinis, allowing to characterize them as cold eurythermal species, with P. tessellata more tolerant to heat and H. bispinis more tolerant to cold. Their different thermal sensitivities are in agreement with their different thermal histories and distributions. In a climate change context, the increase of sea surface temperatures is likely to reduce the northern boundaries of their distributions. Conversely, it can potentially enhance both species' performances at their southernmost distribution limits since those environments are cooler than their maximum thermal tolerances.
机译：由于大多数物种在南极水域出现并居住在南极水中，因此不含鱼腥鱼类的典型例子是稳定性鱼类的典型例子，其中水温低且稳定。这一事实使他们能够发展与寒冷相关的生理特征。尽管如此，几百百万年前，一些物种从南极水域出来，并应对更具变量的热量制度。这项工作旨在确定南美洲南部南美洲，塔锥汤龙TESELLATA和HARPagifer Bispinis中发现的两种亚南极路径样种的热耐受性和偏好，增加了有关热适应机制的宝贵信息。在4,7,10和12摄氏度下暴露三周后进行实验。使用临界热方法和它们的急性热偏好，采用水平热梯度罐建立其热耐热性限制。适应不同暴露温度的鱼类对中间热耐受多边形小（P.Tessellata：593.85℃-2，H.Bispinis：475.40度C-2）和优选和适应温度之间的正关系。对于P.Tessellata和13.05摄氏度，估计最终温度优先率为14.25℃，允许将它们表征为寒冷的eurythermaties，具有p.Tessellata更容忍加热和H.Bispinis更容忍冷。它们的不同热敏性与其不同的热历史和分布一致。在气候变化背景下，海面温度的增加可能会降低其分布的北方界限。相反，它可能会在最方面的最方面的分配限制中提高物种的性能，因为这些环境比其最大的热容差更凉爽。

著录项

  • 来源
    《Polar biology》 |2021年第6期|1055-1067|共13页
  • 作者

    Gimenez Eloisa Mariana; Barrantes Maria Eugenia; Fernandez Daniel Alfredo; Lattuca Maria Eugenia;

  • 作者单位

    Ctr Austral Invest Cient CADIC CONICET Lab Ecol Fisiol & Evoluc Organismos Acuat V9410BFD Ushuaia Argentina;

    Ctr Austral Invest Cient CADIC CONICET Lab Ecol Fisiol & Evoluc Organismos Acuat V9410BFD Ushuaia Argentina;

    Ctr Austral Invest Cient CADIC CONICET Lab Ecol Fisiol & Evoluc Organismos Acuat V9410BFD Ushuaia Argentina|Univ Nacl Tierra del Fuego ICPA UNTDF Inst Ciencias Polares Ambiente & Recursos Nat V9410BXE Ushuaia Argentina;

    Ctr Austral Invest Cient CADIC CONICET Lab Ecol Fisiol & Evoluc Organismos Acuat V9410BFD Ushuaia Argentina|Univ Tecnol Nacl FRTDF UTN Fac Reg Tierra del Fuego V9410KSS Ushuaia Argentina;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nototheniidae; Harpagiferidae; Patagonia; Thermal tolerance polygons; Acute thermal preferenda; Climate change;

    机译：nototheniidae;harpagiferidae;巴塔哥尼亚;热耐受多边形;急性热偏好;气候变化;

相似文献

  • 外文文献
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