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首页> 外文期刊>Marine biology >Otolith size-at-hatch reveals embryonic oxygen consumption in the zebrafish, Danio rerio
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Otolith size-at-hatch reveals embryonic oxygen consumption in the zebrafish, Danio rerio

机译：耳石的孵化大小揭示了斑马鱼Danio rerio的胚胎耗氧量

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摘要

Otoliths have frequently been used to reconstruct growth histories in larval, juvenile and adult fish. However, there is growing evidence that otolith growth is directly determined by metabolic intensity and, consequently, only indirectly related to somatic growth. By performing measurements of oxygen consumption rate and other early life-history traits on individual eggs of zebrafish (Danio rerio), we found that oxygen consumption explained residual variance in otolith size that is not accounted for by egg size. Total oxygen consumption during the embryonic stage explained 34% of the variance in sagitta size at hatch, whereas larval size at hatch (as a proxy for growth during the embryonic period) was not significantly correlated with sagitta size. This strongly suggests that otolith growth is directly related to metabolic rate, and yields a mechanism that may explain recent observations of a link between otolith size at hatch and viability in larval fish.
机译：耳石经常被用来重建幼体，幼鱼和成年鱼的生长历史。然而，越来越多的证据表明耳石的生长直接由代谢强度决定，因此仅与体细胞生长间接相关。通过对单个斑马鱼卵（Danio rerio）进行耗氧率和其他早期生活史特征的测量，我们发现耗氧量解释了耳石大小的残留变化，而卵石大小并未解释这一变化。胚胎期的总耗氧量解释了孵化时箭矢大小变化的34％，而孵化时的幼虫大小（作为胚胎期生长的代用品）与箭矢大小没有显着相关。这有力地暗示了耳石的生长与代谢率直接相关，并产生了一种机制，可以解释最近观察到的孵化中耳石大小与幼体鱼的生存能力之间的联系。

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  • 来源
    《Marine biology》 |2005年第6期|p.1419-1423|共5页
  • 作者

    A. Bang; P. Gronkjaer;

  • 作者单位

    Department of Marine Ecology, Institute of Biological Sciences, University of Aarhus, Finlandsgade 14, 8200 Aarhus N, Denmark;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境生物学;
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