Trade-offs and coexistence in microbial microcosms
Trade-offs and coexistence in microbial microcosms
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DOI：
10.1023/a:1020585711378
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发表时间：
2002-01-01
影响因子：
2.6
通讯作者：
Sandvik, G
中科院分区：
文献类型：
--
作者：
Bohannan, BJM;Kerr, B;Sandvik, G
生物对不同环境因素的反应能力之间的权衡通常被认为在物种共存中起着重要作用。关于这种权衡在生态群落中的作用已经有了广泛的理论研究，但事实证明，很难通过实验来研究这种权衡。微生物是理想的模型系统，用它来实验研究生态平衡的原因和后果。在大肠杆菌B型和t型噬菌体的模型群落中，经常观察到大肠杆菌对噬菌体的抗性和竞争能力之间的权衡。这种权衡可以让不同生态类型的大肠杆菌共存。这种权衡的程度以可预测的方式影响着这些社区的结构、动态和对环境变化的反应。遗传因素、环境因素和基因与环境的相互作用决定了这种权衡的程度。环境控制的权衡幅度代表了环境变化可以改变群落属性，如可侵入性、稳定性和共存的一个途径。
Trade-offs among the abilities of organisms to respond to different environmental factors are often assumed to play a major role in the coexistence of species. There has been extensive theoretical study of the role of such trade-offs in ecological communities but it has proven difficult to study such trade-offs experimentally. Microorganisms are ideal model systems with which to experimentally study the causes and consequences of ecological trade-offs. In model communities of E. coli B and T-type bacteriophage, a trade-off in E. coli between resistance to bacteriophage and competitive ability is often observed. This trade-off can allow the coexistence of different ecological types of E. coli. The magnitude of this trade-off affects, in predictable ways, the structure, dynamics and response to environmental change of these communities. Genetic factors, environmental factors, and gene-by-environment interactions determine the magnitude of this trade-off. Environmental control of the magnitude of trade-offs represents one avenue by which environmental change can alter community properties such as invasability, stability and coexistence.