The effect of temperature on life history parameters and cost of reproduction in the rotifer Brachionus calyciflorus
The effect of temperature on life history parameters and cost of reproduction in the rotifer Brachionus calyciflorus
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DOI：
10.1080/02705060.2011.563998
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发表时间：
2011-09-01
影响因子：
1.3
通讯作者：
Enesco, Hildegard E.
中科院分区：
文献类型：
--
作者：
Kauler, Paul;Enesco, Hildegard E.
以萼花臂轮虫（Brachionus calyciflorus）为研究对象，研究了16℃、22℃和29℃环境温度对其寿命和生活史参数的影响。我们发现温度与寿命有显著的关系。在较低温度下，前繁殖期和繁殖期均有延长，但由于繁殖率受到抑制，繁殖力明显降低。通过比较短寿命轮虫和长寿命轮虫的寿命，我们发现这些轮虫的显著寿命差异是由于生殖期和生殖后期的延长。由于繁殖周期的延长，长寿命轮虫的繁殖力显著高于长寿命轮虫，但繁殖率显著低于长寿命轮虫。在所有温度下，轮虫的寿命与繁殖率之间都存在一致的负相关关系，在轮虫生命周期的繁殖阶段末期大量繁殖的轮虫中，这种关系尤为明显。活性/氧化损伤的综合速率理论可能有助于解释我们观察到的温度效应。
We used the monogonont rotifer, Brachionus calyciflorus, to study the effect of ambient temperatures of 16 degrees C, 22 degrees C, and 29 degrees C on longevity and life history parameters. We found that temperature had a significant relationship with longevity. At lower temperature, there was prolongation of the pre-reproductive and reproductive periods, but fecundity was reduced significantly due to suppression of the reproductive rate. When lifespan of short-and long-lived rotifers was compared, we found that the significant longevity difference in these rotifers was due to extension of reproductive and post-reproductive periods. The fecundity was significantly higher in longer lived rotifers due to the extension of the reproductive period, but the reproductive rate was significantly lower in these rotifers. A consistent negative relationship between rotifer longevity and the rate of reproduction was observed at all temperatures, and it was particularly pronounced in rotifers reproducing heavily at the end of the reproductive stage of their life cycle. The combined rate of living/oxidative damage theory may help explain the temperature effects that we observed.