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首页> 外文期刊>Acta Horticulturae >Behavioural study on host plants shared by the predator Dicyphus errans and the prey Tuta absoluta
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Behavioural study on host plants shared by the predator Dicyphus errans and the prey Tuta absoluta

机译：捕食者触犬共享的寄主植物的行为研究与猎物丁塔绝对

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摘要

In the Mediterranean basin, tomato has been attacked seriously by the exotic tomato borer, Tuta absolute (Lepidoptera: Gelechiidae), reported also on other Solanaceae. Some generalist predators, belonging to the tribe Dicyphini [Hemiptera: Miridae), have demonstrated a good potential in controlling this pest. Among them, the Palaearctic Dicyphus errans occurs naturally in organic tomato in NW Italy, preys upon several pests and lives omnivorously on several plants. This predator seems to share various host plants with the tomato borer, characteristic that could be exploited by means of proper habitat modifications to enhance its predation during all the year. Therefore, host plant selection of both predator and prey was investigated in multi-choiceassays with 10 plant species (aubergine, common bean, broad bean, courgette, datura, European black nightshade, herb-Robert, pepper, potato, tomato). Development and emergence rate of both predator and prey was assessed on tomato and European black nightshade, which is abundant in agro-ecosystems in NW Italy. Furthermore, behavioural responses of D. errans reared on tomato or European black nightshade were tested in olfactometer. Both predator and prey females oviposited on all tested plant species. However, significantly higher numbers of D. errans nymphs emerged on herb-Robert, whereas T. absoluta larvae were found almost exclusively on species of the genus Solanum. Despite the numerous eggs, no larvae could develop on courgette. No significant differences were found in developmental time on tomato and European black nightshade for both predator and prey. In olfactometer, D. errans did not show any significant preference between tomato and European black nightshade, independently of the rearing plant. In a perspective of conservation biological control, herb-Robert and courgette seem to be suitable plants to use as companion plants and in consociation with tomato to favour the predator and hamper the prey, respectively.
机译：在地中海盆地中，番茄被异国情调的番茄螟，Tuta绝对（Lepidoptera：Gelechiidae）严重袭击，也在其他茄科岛报告。一些通用掠夺者，属于Dirwephini [hemiptera：miridae），在控制这种害虫方面表现出良好的潜力。其中，Palaearctic Diyphus差生自然地发生在意大利的NW意大利的有机番茄中，占据几个害虫的射精，并在几种植物上忍受着别人。该捕食者似乎与番茄挖掘机共享各种寄主植物，可以通过适当的栖息地修改来利用的特征来利用，以在全年增加其捕食。因此，研究了捕食者和捕食者的宿主植物选择，以10种植物物种（茄子，共同豆，蚕豆，西葫芦，欧洲黑色夜间，草本罗伯特，胡椒，马铃薯，番茄）。番茄和欧洲黑夜间评估了捕食者和猎物的发展和出局率，在意大利的南部的农业生态系统中丰富。此外，在嗅觉表中测试了饲养在番茄或欧洲黑色夜间的D.跳动的行为反应。捕食者和猎物女性在所有测试的植物物种上吞吐。然而，在草本罗伯特出现的D. errans若虫的数量明显较高。特异性地发现了T.smalluta幼虫在Solanum属的种类上。尽管鸡蛋众多，但没有幼虫可以在西葫芦开发。在番茄和欧洲黑色夜间为捕食者和猎物的发育时间没有发现显着差异。在Olfactometer中，D. errans没有在番茄和欧洲黑色睡衣之间显示任何重大偏好，独立于饲养厂。在保护生物控制的角度下，草本罗伯特和西葫芦似乎是适合使用作为伴侣植物的植物和番茄共同化，以便分别利用捕食者并妨碍猎物。

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