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首页> 外文期刊>Ecological research >Invasive moth facilitates use of a native food plant by other native and invasive arthropods
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Invasive moth facilitates use of a native food plant by other native and invasive arthropods

机译：入侵蛾类促进其他节肢动物和侵入性节肢动物对当地食用植物的使用

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Organisms that invade new habitats exploit new resources or niches and influence native species. Here, we examine how an invasive moth, the parsnip webworm (Depressaria radiella, formerly D. pastinacella), facilitates interactions with other arthropods in spatially separated populations of native cow parsnip (Heracleum maximum) in the Rocky Mountains (New Mexico and Colorado). We compare this with results on small hogweed (Heracleum sphondylium) in the Netherlands, where both the plant and herbivore are native. Larvae of D. radiella feed in webs on ripening fruits of their food plants. Mature caterpillars descend the hollow stems into which they chew a hole, enter the stem and pupate. Other arthropods enter the stems through these holes. Plants in all populations of cow parsnip/hogweed contained either moth pupae and/or webworms mummified by their main parasitoid, Copidosoma sosares that also been introduced into parts of the United States. In both countries, earwigs (Forficula auricularia), which are also invasive in the United States, were the dominant arthropod to utilize webworm-perforated stems, although there was more within-site variability in abundance of earwigs in the United States than in the Netherlands. The woodlouse, Porcelio scaber, which is native to Eurasia but also established in the United States, was abundant in stems of Dutch hogweeds but absent in stems of American cow parsnips. Other native herbivores (e.g., mirid bugs), were collected in stems at sites in both continents. Moreover, the number of various arthropods found in perforated stems correlate positively with the number of holes found in these stems.
机译：入侵新栖息地的生物会利用新资源或生态位并影响本地物种。在这里，我们研究了在落基山脉（新墨西哥州和科罗拉多州）的原生牛防风草（空间最大）的空间分隔种群中，一种防风蛾，防风草蠕虫（Depressaria radiella，原名D. pastinacella）如何促进与其他节肢动物的相互作用。我们将其与在荷兰的小猪草（Heracleum sphondylium）上的结果进行比较，那里的植物和草食动物都是本地植物。 D. radiella的幼虫在其食用植物成熟的果实上喂食网。成熟的毛毛虫从空心茎中挖出一个小孔，进入茎中并化the。其他节肢动物通过这些孔进入茎。在所有的欧洲防风草/猪草种群中，植物都含有蛾p和/或被其主要的副寄生物苏鞭毛虫（Copidosoma sosares）弄湿的网虫。在这两个国家中，虽然在美国，相比于荷兰，在本地，丰度较高的ear的现场变异性更大，但在美国也有入侵性的ear（Forficula auricularia）是利用节肢动物穿孔的茎的主要节肢动物。 。木虱，Porcelio scaber，原产于欧亚大陆，也建立于美国，在荷兰猪草的茎中含量丰富，但在美国牛防风草的茎中却不存在。在这两个大陆的站点的茎中都采集了其他天然草食动物（例如，虫虫）。此外，在穿孔茎中发现的各种节肢动物的数量与在这些茎中发现的孔的数量成正相关。

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