The tradeoff between catch-up growth and escape speed: variation between habitats in the cost of compensation
The tradeoff between catch-up growth and escape speed: variation between habitats in the cost of compensation
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DOI：
10.1111/j.2007.0030-1299.15861.x
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发表时间：
2007-07-01
期刊：
影响因子：
3.4
通讯作者：
Metcalfe, Neil B.
中科院分区：
文献类型：
--
作者：
Alvarez, David;Metcalfe, Neil B.
补偿性生长是指某些物种在一段时间的资源剥夺后表现出的比正常情况下更快的生长。以三刺刺鱼为模式物种，我们测试了补偿性生长对不同生境种群随后逃逸性能的影响。我们发现明显的人口差异的补偿增长率，和强大的栖息地间的差异的影响，追赶增长爆发游泳性能时，测量周后。在池塘人口增长补偿爆发游泳的影响不大，而鱼类从流人口表现出快速追赶增长，随后有较慢的逃逸速度。这些差异可以解释的权衡曲线的非线性性质，这表明，特定的栖息地选择压力导致的差异，爆发游泳性能的重要性。
Compensatory growth is the faster-than-normal growth that some species exhibit after a period of resource deprivation. Using three-spined sticklebacks as model species we tested the impact of compensatory growth on subsequent escape performance in populations from diverse habitats. We found clear population differences in the rate of compensatory growth, and strong inter-habitat differences in the impact that catch-up growth had on burst swimming performance when measured weeks later. In pond populations growth compensation had little effect on burst swimming, whereas fish from stream populations that exhibited rapid catch-up growth subsequently had slower escape speeds. Those differences could be explained by the non-linear nature of the tradeoff curve, suggesting that habitat-specific selection pressures lead to differences in the importance of burst swimming performance.