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首页> 外文期刊>Harmful Algae >Seasonality in the excystment of Alexandrium minutum and Alexandrium tamarense in Irish coastal waters
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Seasonality in the excystment of Alexandrium minutum and Alexandrium tamarense in Irish coastal waters

机译：爱尔兰沿海水域亚历山大亚历山大藻和塔玛亚历山大亚历山大藻的剥壳中的季节性

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摘要

Excystment experiments were carried out on cysts of Alexandrium minutum and A. tamarense (Group III) taken from Cork Harbour, Ireland. Freshly sampled cysts were isolated into well plates and their excystment was monitored over a 30 day period. A pronounced seasonality was observed in the excystment behaviour in both species when measurements were carried out seasonally. Between 80 and 100% of the isolated cysts excysted within 30 days when samples were taken between March and June. However, between only 0 and 15% excysted in samples taken between August and early February. This seasonal characteristic was observed repeatedly over a 3 year period (2004-2007). The effect was observed in cysts which had been sampled from both inter-tidal and sub-tidal locations. No endogenous clock was evident in the germination of A. tamarense and A minutum cysts taken from Cork Harbour which had been stored cool and in the dark under anoxic conditions for up to 18 months. The seasonal effect observed was independent of water temperature, although temperature did affect the rate of excystment. Temperature also affected the maturation of cysts which had been freshly formed in the laboratory. The significance of incorporating seasonality in excystment of Alexandrium into models describing its growth is also discussed.
机译：对取自爱尔兰科克海港的亚历山大亚历山大藻和塔玛氏囊藻（第三类）的囊肿进行了囊肿实验。将新鲜采样的囊肿分离到孔板中，并在30天的时间内监测其囊肿。当季节性进行测量时，两个物种的囊肿行为均观察到明显的季节性。在3月至6月之间取样的30天内，有80至100％的分离出的囊肿被囊肿了。但是，在8月至2月初之间采集的样本中只有0至15％的囊肿被囊肿。在3年内（2004-2007年）反复观察到这种季节性特征。在潮间和潮下部位采样的囊肿中均观察到了这种影响。取自软木港的塔玛生线虫和微小囊肿的发芽未见内源性时钟，它们在缺氧条件下阴凉处保存长达18个月。观察到的季节性影响与水温无关，尽管温度确实会影响水的囊泡率。温度还影响在实验室中刚形成的囊肿的成熟。还讨论了在亚历山大包膜囊肿中将季节性因素纳入描述其生长的模型中的重要性。

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  • 来源
    《Harmful Algae》 |2011年第6期|p.629-635|共7页
  • 作者

    Aoife Ni Rathaille; Robin Raine;

  • 作者单位

    Martin Ryan Institute, National University of Ireland, Galway, University Road, Galway, Ireland;

    Martin Ryan Institute, National University of Ireland, Galway, University Road, Galway, Ireland;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    alexandrium; excystment; ireland;

    机译：亚历山大草;囊肿爱尔兰;

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