Counter-gradient variation in respiratory performance of coral reef fishes at elevated temperatures.
Counter-gradient variation in respiratory performance of coral reef fishes at elevated temperatures.
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DOI：
10.1371/journal.pone.0013299
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发表时间：
2010-10-11
期刊：
影响因子：
3.7
通讯作者：
Nilsson GE
中科院分区：
文献类型：
--
作者：
Gardiner NM;Munday PL;Nilsson GE
物种对全球变暖的反应取决于不同的种群如何受到整个物种地理范围内温度升高的影响。当地对温度梯度的适应可能导致该范围不同部分的种群作出不同的反应。在水生系统中，跟上增加的氧气需求是影响物种对高温反应的关键参数。因此，呼吸性能预计会有所不同的人群在不同的纬度，因为他们经历不同的热环境。我们测试的热带海洋鱼类的呼吸性能的地理变化，通过比较热效应的休息和最大摄氧率为6种珊瑚礁鱼在两个地点的大堡礁（GBR），澳大利亚。这两个地点，苍鹭岛和吕宋岛，沿纬度梯度相隔约1200公里沿着。我们发现强烈的反梯度变化有氧范围之间的位置在四个物种从两个家庭（Pomacentridae和Apogonidae）。高纬度种群（苍鹭岛，南部GBR）的表现明显优于低纬度种群（吕宋岛，北方GBR）在温度高达5°C以上的平均夏季地表水温度。其他两个物种的有氧范围没有表现出不同的位置。有氧范围的垂直变化主要是由高纬度人群最大摄氧量高出80%驱动的。我们的研究结果表明，高纬度种群的补偿机制提高了他们在极端温度下的表现，因此，高纬度种群的珊瑚礁鱼类将受到海洋变暖的影响比低纬度种群。
The response of species to global warming depends on how different populations are affected by increasing temperature throughout the species' geographic range. Local adaptation to thermal gradients could cause populations in different parts of the range to respond differently. In aquatic systems, keeping pace with increased oxygen demand is the key parameter affecting species' response to higher temperatures. Therefore, respiratory performance is expected to vary between populations at different latitudes because they experience different thermal environments. We tested for geographical variation in respiratory performance of tropical marine fishes by comparing thermal effects on resting and maximum rates of oxygen uptake for six species of coral reef fish at two locations on the Great Barrier Reef (GBR), Australia. The two locations, Heron Island and Lizard Island, are separated by approximately 1200 km along a latitudinal gradient. We found strong counter-gradient variation in aerobic scope between locations in four species from two families (Pomacentridae and Apogonidae). High-latitude populations (Heron Island, southern GBR) performed significantly better than low-latitude populations (Lizard Island, northern GBR) at temperatures up to 5°C above average summer surface-water temperature. The other two species showed no difference in aerobic scope between locations. Latitudinal variation in aerobic scope was primarily driven by up to 80% higher maximum rates of oxygen uptake in the higher latitude populations. Our findings suggest that compensatory mechanisms in high-latitude populations enhance their performance at extreme temperatures, and consequently, that high-latitude populations of reef fishes will be less impacted by ocean warming than will low-latitude populations.
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DOI：
10.1111/j.1749-6632.2009.04575.x
发表时间：
2009-01-01
期刊：
YEAR IN EVOLUTIONARY BIOLOGY 2009
影响因子：
--
作者：
Conover, David O.;Duffy, Tara A.;Hice, Lyndie A.
通讯作者：
Hice, Lyndie A.
影响因子：
11.6
作者：
Nilsson, Goran E.;Crawley, Natalie;Munday, Philip L.
通讯作者：
Munday, Philip L.
DOI：
10.1073/pnas.0606777104
发表时间：
2007-01-16
影响因子：
11.1
作者：
Gerlach, Gabriele;Atema, Jelle;Miller-Sims, Vanessa
通讯作者：
Miller-Sims, Vanessa
DOI：
10.1098/rspb.2006.3706
发表时间：
2007-01-07
影响因子：
4.7
作者：
Nilsson, Goran E.;Ostlund-Nilsson, Sara;Grutter, Alexandra S.
通讯作者：
Grutter, Alexandra S.
影响因子：
2.8
作者：
Lai, Jimmy C. C.;Kakuta, Izuru;Randall, David
通讯作者：
Randall, David