Petzel-Witt Silvana, Wunder Cora, Pogoda Werner, Toennes Stefan W, Mebs Dietrich
Institute of Legal Medicine, Goethe University, Kennedyallee 104, D-60596, Frankfurt, Germany.
Institute of Legal Medicine, Goethe University, Kennedyallee 104, D-60596, Frankfurt, Germany; Institute of Legal Medicine, Johannes Gutenberg-University, Am Pulverturm 3, D-55131, Mainz, Germany.
Toxicon. 2023 May;227:107098. doi: 10.1016/j.toxicon.2023.107098. Epub 2023 Mar 28.
Some butterflies and moths sequester and retain noxious phytochemicals for defence against predators. In the present study, three moth species, the garden tiger moth, Arctia caja, the death hawk moth, Acherontia atropos, and the oleander hawk moth, Daphnis nerii, were tested whether they sequester alkaloids from their host plants. Whereas A. caja consistently sequestered atropine from Atropa belladonna, also when atropine sulfate was added to the alkaloid-free diet of the larvae, A. atropos and D. nerii were found to be unable to sequester alkaloids, neither atropine nor eburnamenine from Vinca major, respectively. Instead of acquiring toxicity as chemical defence, nocturnal lifestyle and cryptic attitudes may improve their chances of survival.
一些蝴蝶和蛾类会摄取并留存有害的植物化学物质以抵御捕食者。在本研究中，对三种蛾类进行了测试，即甘蓝夜蛾（Arctia caja）、鬼脸天蛾（Acherontia atropos）和夹竹桃天蛾（Daphnis nerii），以确定它们是否从寄主植物中摄取生物碱。甘蓝夜蛾始终能从颠茄中摄取阿托品，即便在幼虫的无生物碱饲料中添加硫酸阿托品时也是如此；而鬼脸天蛾和夹竹桃天蛾则被发现无法摄取生物碱，鬼脸天蛾无法从长春花中摄取阿托品，夹竹桃天蛾也无法从长春花中摄取降马钱子碱。与其通过获取毒性作为化学防御手段，夜行性的生活方式和隐匿的习性或许能提高它们的生存几率。
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