Feeding and Host-Selection Behavior of Lema trilineata daturaphila Larvae (Coleoptera: Chrysomelidae)
Feeding and Host-Selection Behavior of Lema trilineata daturaphila Larvae (Coleoptera: Chrysomelidae)
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曼陀罗幼虫（鞘翅目：叶甲科）的取食和寄主选择行为
DOI：
10.1093/aesa/64.6.1435
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发表时间：
1971
影响因子：
2.3
通讯作者：
R. D. Goeden
中科院分区：
文献类型：
--
作者：
M. Kogan;R. D. Goeden
对三线卷蛾的取食和寄主选择行为进行了分析，重点研究了寄主发现、识别、接受和适应等阶段。开发了三套生物测定法来监测方向、咬和连续进食活动。将曼陀罗的全叶粉末分级并掺入基本人工培养基中。幼虫在含有全叶粉的人工培养基上发育完全。生物测定比较了幼虫的反应与不同的植物馏分纳入人工媒体与新鲜的叶材料获得的。
用含有某些托品烷生物碱和绿原酸的人工培养基来测试这些在寄主植物中发现的次生代谢产物的作用。t.曼陀罗根据对茄科昆虫寄主范围的比较，提出了一个解释茄科昆虫寄主选择的工作假说。t. daturaphila、科罗拉多马铃薯甲虫Leptinotarsa decemlineata（Say）和烟草天蛾Manduca sexta（Johannson），以及它们对茄科特定生物碱的耐受性。有人建议，寄主选择是由喂养兴奋剂，有一个广泛的发生在这个家庭的植物。然而，某些植物物种的接受受到特定生物碱的分布的限制，即在L. t.洋金花虫属（daturaphila）、在科罗拉多马铃薯甲虫的优选宿主中存在的某些甾体生物碱，以及在烟草天蛾的某些宿主中发现的尼古丁。
Feeding and host-selection behavior of Lema trilineata daturaphila Kogan & Goeden were analyzed, with emphasis on the phases of host finding, recognition, acceptance, and suitability. Three sets of bioassays were developed to monitor orientation, biting, and continuous feeding activities. Whole-leaf powders of Datura meteloides de Candolle were fractionated and incorporated into a basic artificial medium. Complete larval development was achieved on an artificial medium containing whole-leaf powder. Bioassays compared larval responses obtained with different plant fractions incorporated into artificial media to those obtained with fresh leaf material.
Artificial media containing certain tropane alkaloids and chlorogenic acid were used to test the role of these secondary metabolites found in host plants of L. t. daturaphila . A working hypothesis was formulated to explain host selection by insects associated with the Solanaceae based on a comparison of the host ranges of L. t. daturaphila , the Colorado potato beetle, Leptinotarsa decemlineata (Say), and the tobacco hornworm, Manduca sexta (Johannson), and on their reported tolerances to specific alkaloids of the Solanaceae. It is proposed that host selection is governed by feeding excitants that have a widespread occurrence among plants of this family. However, acceptance of certain plant species is limited by the distribution of particular alkaloids, namely tropane alkaloids that prevail in host plants of L. t. daturaphila , certain steroidal alkaloids occurring in preferred hosts of the Colorado potato beetle, and nicotine which is found in some hosts of the tobacco hornworm.