The effects of ploidy level on the thermal distributions of brine shrimp Artemia parthenogenetica and its ecological implications
The effects of ploidy level on the thermal distributions of brine shrimp Artemia parthenogenetica and its ecological implications
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DOI：
10.1038/hdy.1991.54
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发表时间：
1991-06
期刊：
影响因子：
3.8
通讯作者：
L. Zhang;H. Lefcort
中科院分区：
文献类型：
--
作者：
L. Zhang;H. Lefcort
研究了同域分布的二倍体和五倍体卤虫对温度变化的反应。五倍体在极冷（0 ℃）和极热（37.5 ℃）下都能更好地存活。当置于12.5 - 35.1 ℃的温度梯度中时，二倍体通常位于19 ℃以上的温度下，而五倍体沿梯度沿着分布。这些结果表明，五倍体可能比同域二倍体更适合极端温度。我们的研究提供了第一个实验证据，在动物的差异温度使用同种同域二倍体和多倍体生物。
The responses to temperature change of sympatric diploid and pentaploid brine shrimp Artemia parthenogenetica were studied. Pentaploids survive better at extremes of both cold (0 C) and heat (37.5 C). When placed in a thermal gradient ranging from 12.5 to 35.1 C, diploids generally located at temperatures above 19 C while pentaploids were more evently distributed along the gradient. These results suggest that pentaploids may be better suited to temperature extremes than sympatric diploids. Our study provides the first experimental evidence in animals of differential temperature use by conspecific sympatric diploid and polyploid organisms.