生长速率假说及其在浮游动物营养动力学中的研究进展

被引：7

作者：

苏强 ^{[1
,2
]}

机构：

[1] 中国科学院计算地球动力学重点实验室

[2] 中国科学院大学

来源：

地球科学进展 | 2012年 / 27卷 / 11期

关键词：

生长速率假说; 生态化学计量学; 浮游动物; P;

D O I：

暂无

中图分类号：

Q958.8 [水生动物学];

学科分类号：

摘要：

生物体由元素组成,其生长、繁殖以及代谢过程均涉及营养元素的吸收、利用与储存。有机体的P含量决定了RNA的形成,并作用于核糖体,进而对蛋白质和生长速率产生影响。浮游动物体内P含量增加,以及C∶P和N∶P的降低,主要反映了不同生长速率下,富P的核糖体RNA含量的改变。关于生长速率假说(Growth Rate Hypothesis,GRH)的研究表明,在低C∶P、高P含量的饵料条件下,浮游动物C∶P和N∶P的稳态性特征发生改变,将获取的P分配至RNA中,增加蛋白质合成,提高生长速率;反之,浮游动物的次级生产力将会降低,C的同化效率和传递效率下降,进而对生态系统的C收支产生影响。加强浮游动物GRH的研究,有助于增强对生态系统C收支以及未来变化过程的认识。

引用

页码：1204 / 1210

页数：7

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