Catch-up growth and swimming performance in threespine sticklebacks (Gasterosteus aculeatus):: seasonal changes in the cost of compensation
Catch-up growth and swimming performance in threespine sticklebacks (Gasterosteus aculeatus):: seasonal changes in the cost of compensation
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DOI：
10.1139/f05-130
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发表时间：
2005-09-01
影响因子：
2.4
通讯作者：
Metcalfe, NB
中科院分区：
文献类型：
--
作者：
Alvarez, D;Metcalfe, NB
补偿性生长是在生长抑制期之后异常快速生长的阶段。这种反应使动物能够达到与持续喂养的同龄动物相同的年龄尺寸。我们测试了这样的假设：即使在快速生长期结束后，一段生长不良时期和随后的补偿也会降低三刺刺鱼（Gasterosteus aculeatus）的游泳能力；我们还调查了一年中快速增长的时间如何影响游泳表现的可能成本。三刺鱼在冬季和春季的食物短缺期后表现出补偿性生长反应。这种生长轨迹的变化随后导致承受高流量的能力下降，但仅限于繁殖季节之前的快速生长期。我们认为，三刺刺鱼可能愿意在繁殖季节之前承担追赶性生长的游泳成本，以最大限度地提高其预期的繁殖成功率。
Compensatory growth is a phase of unusually rapid growth following a period of growth depression. This response allows animals to achieve the same size-for-age as continuously fed contemporaries. We tested the hypothesis that a period of poor growth followed by compensation reduces the swimming abilities of threespine sticklebacks (Gasterosteus aculeatus), even after the period of rapid growth had ceased; we also investigated how the time of year in which the rapid growth occurred affected the possible costs in swimming performance. The threespine sticklebacks showed a compensatory growth response after a period of food shortage, both in winter and in spring. This change in growth trajectory subsequently caused a reduction in ability to withstand high flows, but only when the period of rapid growth occurred just prior to the breeding season. We suggest that threespine sticklebacks may be willing to incur the swimming costs of catch-up growth just prior to the breeding season to maximize their expected reproductive success.