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首页> 外文期刊>Marine and Freshwater Behaviour and Physiology >Impact of oceanic upwelling on morphometric and molecular indices of an intertidal fish Scartichthys viridis (Blenniidae)
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Impact of oceanic upwelling on morphometric and molecular indices of an intertidal fish Scartichthys viridis (Blenniidae)

机译：海洋上升流对潮间鱼Scartichthys viridis（Blenniidae）形态和分子指数的影响

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摘要

Upwelling is a determinant factor for intertidal community structure on all coasts where it occurs. Most of the evidence has been obtained from sessile species or those with limited mobility and it is still unknown whether nutrients are transferred from primary producers to upper trophic levels in upwelling systems. We studied a fish species from two localities in Central Chile, Quintay, and Las Cruces, the former affected by upwelling and the latter not as evidenced by sea surface temperatures. Specimens of the herbivorous fish Scartichthys viridis, from the two sites were compared for weight-length relationships and RNA:DNA ratio in muscle tissue. The results showed that in the upwelling zone, fish increase their weight faster and have greater RNA: DNA ratios than those from the non-upwelling zone. This suggests that nutrient subsidies can alter the performance of key intertidal vertebrates such as S. viridis. The consequences of this effect on community structure and dynamics are not known.
机译：上升流是其发生的所有海岸上潮间带群落结构的决定性因素。大多数证据是从无土物种或流动性有限的物种获得的，尚不清楚养分是否从初级生产者转移到上升流系统的较高营养水平。我们研究了智利中部两个地区的一种鱼类，昆泰和拉斯克鲁塞斯，前者受到上升流的影响，而后者没有受到海面温度的证明。比较了这两个地点的草食性鱼类Scartichthys viridis的标本在肌肉组织中的重量长度关系和RNA：DNA比。结果表明，与非上升流区相比，在上升流区，鱼类的体重增加更快，且RNA：DNA比率更高。这表明，营养补贴可以改变主要潮间带脊椎动物如S. viridis的性能。这种作用对社区结构和动态的影响尚不清楚。

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  • 来源
    《Marine and Freshwater Behaviour and Physiology》 |2011年第2期|p.33-42|共10页
  • 作者

    J. Pulgar; M. Alvarez; J. Morales; M. Garcia-Huidobro; M. Aldana; F.P. Ojeda; V.M. Pulgar;

  • 作者单位

    Departamento de Ecologia & Biodiversidad, Republica 470, Universidad Andres Bello,Santiago, Chile;

    Facultaade Ciencias Biologicas, Republica 217, Universidad Andres Bello,Santiago, Chile;

    Facultaade Ciencias Biologicas, Republica 217, Universidad Andres Bello,Santiago, Chile;

    Departamento de Ecologia & Biodiversidad, Republica 470, Universidad Andres Bello,Santiago, Chile;

    Departamento de Ecologia & Biodiversidad, Republica 470, Universidad Andres Bello,Santiago, Chile,Center for Advanced Studies in Ecology & Biodiversity, Pontificia Universidad Catolica de Chile, Santiago, Chile;

    Center for Advanced Studies in Ecology & Biodiversity, Pontificia Universidad Catolica de Chile, Santiago, Chile;

    Center for Research in Obstetrics & Gynecology, Wake Forest University School of Medicine, Winston-Salem, NC, USA;

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  • 正文语种 eng
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  • 关键词

    upwelling; fish; intertidal; rna: dna; body size; sst; scartichthys viridis;

    机译：上升鱼;潮间带rna：dna;身体尺寸;sst;scartichthys viridis;

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