Diversity cascades and malaria vectors.

Diversity cascades and malaria vectors.
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DOI:
10.1603/033.046.0307
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发表时间:
2009-05
影响因子:
2.1
通讯作者:
Beier JC
Beier JC
中科院分区:
农林科学3区
文献类型:
--
作者:
Carlson JC;Dyer LA;Omlin FX;Beier JC

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捕食者多样性和初级消费者丰度之间的相互作用包括直接效应和间接级联效应。在大多数疟疾病例发生的撒哈拉以南非洲,了解这些对未成熟按蚊的影响非常重要。水生食肉动物和未成熟的蚊子是从肯尼亚西部高地的砖匠挖掘的不同年龄的浅水池中收集的。通径分析表明,生境年龄对黄杨的生长具有间接的负向影响。gambiae (Giles, 1902)通过对捕食者多样性的影响进行调节。干扰使生境恢复到较早的演替阶段,减少了捕食者的多样性,增加了an。冈比亚按蚊的种群。由于捕食者多样性减少,媒介丰度增加,这突出了保护本地昆虫多样性的公共卫生价值。
The interactions between predator diversity and primary consumer abundance can include direct effects and indirect, cascading effects. Understanding these effects on immature Anopheles mosquitoes is important in sub-Saharan Africa, where most cases of malaria occur. Aquatic predators and immature mosquitoes were collected from shallow pools of varying age previously excavated by brickmakers in the western highlands of Kenya. Path analysis showed an indirect negative effect of habitat age on An. gambiae (Giles, 1902) mediated by effects on predator diversity. Disturbance resets habitats to an earlier successional stage, diminishing predator diversity and increasing An. gambiae populations. The increase in vector abundance as a result of reduced predator diversity highlights the public health value in conserving native insect diversity.
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