Invertebrate carcasses as a resource for competing Aedes albopictus and Aedes aegypti (Diptera: Culicidae).
Invertebrate carcasses as a resource for competing Aedes albopictus and Aedes aegypti (Diptera: Culicidae).
复制标题
无脊椎动物尸体作为白纹伊蚊和埃及伊蚊（双翅目：蚊科）竞争的资源。
DOI：
10.1093/jmedent/37.3.364
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发表时间：
2000
影响因子：
2.1
通讯作者：
Juliano,SA
中科院分区：
文献类型：
--
作者：
Daugherty,MP;Alto,BW;Juliano,SA
陆生无脊椎动物尸体是昆虫在猪笼草中发育的重要资源。然而，很少有人知道这些尸体在其他容器中的作用，这些容器也接受落叶和茎流输入。本实验研究了积累的无脊椎动物尸体作为两种竞争蚊子白纹伊蚊（Skuse）和埃及伊蚊（L.）的资源的影响，两个物种是否从积累的尸体中获得了不同的好处，以及这种好处是否影响了种间竞争。首先，我们测量了标准容器中的无脊椎动物尸体在现场的积累。然后，我们使用了一个替代系列，在相同的总密度下具有五种不同的物种比例，并在三个水平上改变无脊椎动物尸体[deadDrosophila melanogaster（Meigen）]的输入：无，从我们的现场的平均输入，或在我们的现场记录的最大输入。测量每种蚊子的存活率、发育时间和质量作为种群增长的相关因素，并用于计算种群性能指数λ′。无脊椎动物胴体添加对所有生长相关因子和λ′都有很强的正效应。物种之间的性能差异显着，在小或没有尸体的增加和无脊椎动物尸体的大量投入，但几乎没有证据表明，无脊椎动物尸体的投入改变了在这个系统中的竞争优势。这些结果表明，陆生无脊椎动物尸体可能是许多类型的容器社区的重要资源，大量积累的死无脊椎动物可能会减少这些蚊子之间的资源竞争，从而有利于共存。我们建议，资源的总量，包括积累的无脊椎动物尸体，可以解释观察到的模式，更换涉及这些蚊子。
Terrestrial invertebrate carcasses are an important resource for insects developing in pitcher plants. However, little is known of the role of these carcasses in other containers, which also receive leaf fall and stemflow inputs. This experiment investigated effects of accumulated invertebrate carcasses as a resource for two competing mosquitoes,Aedes albopictus(Skuse) andAedes aegypti(L.), whether either species differentially benefited from accumulated carcasses, and if such a benefit affected interspecific competition. First, we measured accumulation of invertebrate carcasses in standard containers at a field site. We then used a replacement series with five different species ratios at the same total density, and varied the input of invertebrate carcasses [deadDrosophila melanogaster(Meigen)] in three levels: none, the average input from our field site, or the maximum input recorded at our field site. Survivorship, development time, and mass were measured for each mosquito species as correlates of population growth, and were used to calculate a population performance index, λ′. There were strong positive effects of invertebrate carcass additions on all growth correlates and λ′. Differences in performance between species were pronounced in small or no carcass additions and absent in large inputs of invertebrate carcasses, but there was little evidence that inputs of invertebrate carcasses altered the competitive advantage in this system. These results suggest that terrestrial invertebrate carcasses may be an important resource for many types of container communities, and large accumulations of dead invertebrates may reduce resource competition between these mosquitoes, thus favoring coexistence. We propose that the total amount of resource, including accumulated invertebrate carcasses, may explain observed patterns of replacement involving these mosquitoes.