Drought-induced mosquito outbreaks in wetlands
Drought-induced mosquito outbreaks in wetlands
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DOI：
10.1046/j.1461-0248.2003.00533.x
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发表时间：
2003-11-01
期刊：
影响因子：
8.8
通讯作者：
Knight, TM
中科院分区：
文献类型：
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作者：
Chase, JM;Knight, TM
蚊子不仅令人讨厌，而且是许多重要的人类和动物疾病的媒介。在这里，在反对的教条，增加降水预测蚊子丰富，我们假设，蚊子应该显示人口爆发后，干旱年。具体而言，我们建议，在湿地，永远不会干（永久），捕食者限制蚊子的丰度，而在湿地，每年干（临时），竞争对手，很好地适应可预测的干燥，限制蚊子的丰度。然而，在仅在干旱年份（半永久性）干燥的湿地中，蚊子捕食者和竞争对手被淘汰，并且必须在干旱后繁殖，湿地蚊子的数量可能会飙升。我们提出了支持这一假设的证据，从自然湿地的调查和控制围隔实验。我们的结论是，这个框架可以提供一个可靠的方法来预测和准备在大空间尺度上的蚊子丰度的年与年的变化。
Mosquitoes are not only a nuisance, but also vector many important human and animal diseases. Here, in opposition with the dogma that increased precipitation predicts mosquito abundance, we hypothesize that mosquitoes should show population outbreaks after drought years. Specifically, we suggest that in wetlands that never dry (Permanent), predators limit mosquito abundance, whereas in wetlands that dry yearly (temporary), competitors that are well adapted to predictable drying, limit mosquito abundance. However, in wetlands that dry only during drought years (semi-permanent), mosquito predators and competitors are eliminated and must recolonize following a drought, and the abundance of wetland mosquitoes can skyrocket. We present supportive evidence for this hypothesis from surveys of natural wetlands and from a controlled mesocosm experiment. We conclude that this framework may provide a reliable way to predict and prepare for year-to-year variation in mosquito abundances at large spatial scales.