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首页> 外文期刊>Marine ecology progress series >Fluctuating algal symbiont communities in Acropora palifera (Scleractinia: Acroporidae) from Taiwan
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Fluctuating algal symbiont communities in Acropora palifera (Scleractinia: Acroporidae) from Taiwan

机译：来自台湾的rop蝶（Acropora palifera）（Scleractinia：Acroporidae）中的藻类共生菌群落波动

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摘要

Seasonal dynamics of algal symbiont communities from the reef flat-dwelling coral Acropora palifera was monitored from January 2000 to July 2001 at Tantzei Bay, Kenting National Park, southern Taiwan. Zooxanthellae density and pigment contents monitored throughout the 18 mo sampling period indicated that no significant bleaching occurred in A. palifera. Molecular phylo-typing showed that 2 distinct symbionts, Phylotypes C and D, were associated with A. palifera, either individually or simultaneously. Population surveys throughout the bimonthly sampling period demonstrated that the symbiont community within A. palifera was highly dynamic with significant fluctuations; a drop in the Phylotype D percentage occurred in May, which was correlated with a rise in seawater temperature in the late spring/early summer at the sampled reef. Direct tracking of tagged corals provided evidence that seasonal fluctuations in the algal symbiont communities not only involve changes in zooxanthellae densities and pigment contents, but also a reshuffling of different Symbiodinium phylotypes. Our study highlights that stress tolerance among phylotypes urgently needs to be re-evaluated through a better understanding of the physiological traits of symbionts.
机译：2000年1月至2001年7月，在台湾南部垦丁国家公园的坦采湾，监测了来自珊瑚礁平地珊瑚角藻（Acropora palifera）的藻类共生生物群落的季节性动态。在整个18个月的采样期内监测到的黄原虫密度和色素含量表明，在A. palifera中没有发生明显的漂白现象。分子系统分型显示，两种不同的共生体，分别为Cy和D型，分别与A. palifera有关。整个双月抽样期间的人口调查显示，A。palifera内的共生菌群落高度动态，并具有明显的波动。 5月，D型植物的百分率下降，这与春末/初夏的珊瑚礁海水温度升高有关。直接跟踪带标签的珊瑚提供了证据，表明藻类共生体群落的季节性波动不仅涉及虫黄藻的密度和色素含量的变化，而且还改变了不同共生素系统型。我们的研究突出表明，迫切需要通过更好地了解共生体的生理特征来重新评估系统型之间的胁迫耐受性。

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