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首页> 外文会议>Australian Weeds Conferences >Longitarsus echii and its impact on Echium plantagineum (Paterson's curse): the insect for the Mediterranean rainfall range of the weed?
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Longitarsus echii and its impact on Echium plantagineum (Paterson's curse): the insect for the Mediterranean rainfall range of the weed?

机译：Longitarsus echii及其对斯内西亚氏植物（Paterson's Curse）的影响：杂草的虫子的虫子呢？

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摘要

Since the release program for biological control of Echium plantagineum started, the establishment of insects in the drier Mediterranean rainfall areas of Australia has been poor. To rectify this poor establishment in low rainfall regions, the winteractive flea beetle, Longitarsus echii, was imported from Mediterranean Europe, cleared through quarantine and insects supplied to collaborating State Departments for mass rearing by 1997. L. echii has now been released at 100 sites across temperate Australia and established at greater than 80% of sites. To confirm the ability of L. echii to limit the growth and reproductive potential of E. plantagineum, a fully replicated randomised block field experiment was conducted in the winter of 1998. The experiment was designed to measure insect feeding, pasture competition and their interaction. Plant reproductive effort and mortality was not effected by L. echii larval feeding alone but was reduced 90% by pasture competition. In combination with pasture competition larval feeding increased weed mortality by 26% and reduced reproductive effort a further 75% and 93% for moderate and high rates of larval feeding.
机译：由于升血米氏素生物控制的释放计划开始，澳大利亚干燥地中海降雨区的昆虫的建立一直很差。为了纠正低降雨区的糟糕建立，龙天花礁石，龙天石贝迪从地中海欧洲进口，通过水域和昆虫清算，提供给1997年的群众大规模饲养的合作级别。L. Echii现已在100个地点发布遍布温带澳大利亚，并以大于80％的网站建立。为了确认L. Echii限制E.Plataginineum的生长和生殖潜力的能力，在1998年冬季进行了全面复制的随机块场实验。该实验旨在衡量昆虫饲养，牧场竞争及其互动。植物生殖努力和死亡率没有受到单独的畜牧业的影响，但牧场竞争降低了90％。结合牧场比赛幼虫喂养杂草的死亡率增加了26％并减少了生殖努力，进一步降低了75％和93％，适应中等和高幼虫饲料。

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