Cysts of Danish Gymnodinium nolleri Ellegaard et Moestrup sp. ined. (Dinophyceae): studies on encystment, excystment and toxicity
Cysts of Danish Gymnodinium nolleri Ellegaard et Moestrup sp. ined. (Dinophyceae): studies on encystment, excystment and toxicity
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DOI：
10.1093/plankt/20.9.1743
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发表时间：
1998
影响因子：
2.1
通讯作者：
M. Ellegaard;D. Kulis;D. Anderson
中科院分区：
文献类型：
--
作者：
M. Ellegaard;D. Kulis;D. Anderson
裸子藻的生活史动态。我不知道。在不同的温度和营养条件下进行了研究。在丹麦海洋沉积物中发现的五种来自包囊的培养菌株被用于实验。包裹体和激发体均随温度变化。最大包囊温度出现在22~28℃，低于13℃或高于33℃均未形成包囊，磷限制下的包囊产量略高于氮磷结合限制下的包囊产量。最大激发温度为26.5℃，在11℃和35℃以上可忽略不计，成熟休止期一般为3-4周。在磷和氮限制下产生的包囊进行了麻痹性贝毒(PSP)毒素的高效液相色谱检测，未检测到任何毒素。目前尚不清楚为什么在斯堪的纳维亚半岛的浮游生物样本中还没有记录到这一物种的植物细胞，尽管这种包囊分布广泛。
Life cycle dynamics of Gymnodinium nolleri Ellegaard et Moestrup sp. ined. were studied under different temperature and nutrient conditions. Five culture strains originating from cysts found in Danish marine sediments were used for the experiments. Both encystment and excystment were found to vary with temperature. Maximal encystment occurred at 22-28°C, with no cysts formed below 13°C or above 33°C. Cyst production was slightly higher under phosphorus limitation than under combined nitrogen and phosphorus limitation. Maximal excystment occurred at 26.5°C with negligible excystment under 11°C and over 35°C. The resting period for cyst maturation was typically 3-4 weeks. Cysts produced under both phosphorus and nitrogen limitation were tested for paralytic shellfish poisoning (PSP) toxins by HPLC, and none were detected. It remains unclear why vegeta- tive cells of this species have not yet been recorded in plankton samples from Scandinavia, despite the widespread distribution of the cysts.