Pre‐ and post‐ingestive defenses affect larval feeding on a lethal invasive host plant
Pre‐ and post‐ingestive defenses affect larval feeding on a lethal invasive host plant
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摄入前和摄入后防御影响幼虫以致命的入侵宿主植物为食
DOI：
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发表时间：
2019
影响因子：
1.9
通讯作者：
C. Boggs
中科院分区：
文献类型：
--
作者：
Rachel A. Steward;L. Fisher;C. Boggs
Evolutionary traps arise when organisms use novel, low‐quality or even lethal resources based on previously reliable cues. Persistence of such maladaptive interactions depends not only on how individuals locate important resources, such as host plants, but also the mechanisms underlying poor performance. Pieris macdunnoughii (Remington) (Lepidoptera: Pieridae) lays eggs on a non‐native mustard, Thlaspi arvense (L.) (Brassicaceae), which is lethal to the larvae. We first tested whether larval feeding behavior was affected before (pre‐) ingestion or following (post‐) ingestion of leaf material, indicating activity of feeding deterrents, toxins, or both in this evolutionary trap. Neonates were less likely to start feeding and eventually fed more slowly on T. arvense than on the native host plant Cardamine cordifolia (Gray) (Brassicaceae) in both laboratory and field. Starvation was a primary cause of mortality, indicating the role of a feeding deterrent. Feeding did not differ between larvae from invaded and uninvaded population. Second, T. arvense defensive chemistry is dominated by the glucosinolate sinigrin (allyl or 2‐propenyl glucosinolate). Adding sinigrin to the leaves of T. arvense and native hosts C. cordifolia and Descurainia incana (Bernhardi ex Fischer & Meyer) (Brassicaceae) delayed the onset of feeding, caused larvae to feed more slowly, and decreased survival on the native hosts. This evolutionary trap may not be driven by a novel deterrent, but rather by a change in the concentration of a deterrent found in native hosts. Many insects have adapted to evolutionary traps posed by invasive plants, incorporating the new plant into their diets. Thlaspi arvense remains lethal to P. macdunnoughii, and pre‐ingestive deterrents such as excess sinigrin may contribute to persistent maladaptation.
影响因子：
3.4
作者：
Kuchernig JC;Burow M;Wittstock U
通讯作者：
Wittstock U
化学感应输入对于快速拒绝有毒食物至关重要吗？
DOI：
10.1242/jeb.199.7.1523
发表时间：
1996
期刊：
The Journal of experimental biology
影响因子：
--
作者：
Glendinning,JI
通讯作者：
Glendinning,JI
影响因子：
5.1
作者：
Gumz, Frauke;Krausze, Joern;Wittstock, Ute
通讯作者：
Wittstock, Ute