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首页> 外文期刊>Journal of Applied Phycology >Morphological and physiological differences between two morphotypes of Durvillaea antarctica (Phaeophyceae) from the sub-Antarctic ecoregion of Magallanes, Chile
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Morphological and physiological differences between two morphotypes of Durvillaea antarctica (Phaeophyceae) from the sub-Antarctic ecoregion of Magallanes, Chile

机译：智利亚南极常态Durvillaea南极（Pheaeophyceae）两种Morphotic型之间的形态学和生理差异

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摘要

The coastal marine ecosystems of the sub-Antarctic ecoregion of Magallanes in southern Chile are strongly characterized by environmental heterogeneity with a unique and high biodiversity of benthic macroalgae. The kelp Durvillaea antarctica (Phaeophyceae) is abundant in the intertidal in this region. Two morphotypes, one with elongated-cylindrical ("morphotype EC") and one with laminar ("morphotype L") blades, have been collected from a wave-protected site at the Strait of Magellan and the wave-exposed shores of the isolated Otway Sound. Morphometric and physiological (by chlorophyll fluorescence) analyses showed significant differences between the two morphotypes regarding the morphology, the maximum electron transport rates (ETRmax), and the chlorophyll c concentration. These morphological and physiological differences can be linked to their hydrodynamic environment. The presence of two different species in the region of Magallanes based on the measured parameters is discussed. This study may be useful for future genetic and biotechnological investigations and draws attention to D. antarctica as a species of commercial value among the marine resources of Chile.
机译：智利南部Magallanes的沿海海洋生态系统被环境异质性强烈地特征，具有底栖菌属的独特和高生物多样性。 KELP Durvillaea南极洲（Phaeophyceae）在该地区的跨境中丰富。两种Morothepes，一个具有细长圆柱（“Mor型Ec”）和具有层流（“Mor蝶型L”）叶片的一个，从麦哲伦海峡的波浪保护的部位收集到孤立的Otway的波暴露的岸边声音。形态流和生理（通过叶绿素荧光）分析显示了关于形态学，最大电子传输速率（Etrmax）和叶绿素C浓度的两种Mor型型比的显着差异。这些形态和生理差异可以与其流体动力学环境相关联。讨论了基于测量参数的磁岩区域中存在两种不同物种。本研究可用于未来的遗传和生物技术调查，并注意智利海洋资源中的商业价值的D. antarctica。

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