Herbarium specimens reveal herbivory patterns across the genus Cucurbita
Herbarium specimens reveal herbivory patterns across the genus Cucurbita
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DOI：
10.1002/ajb2.16126
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发表时间：
2023-02-13
影响因子：
3
通讯作者：
Meineke，Emily
中科院分区：
文献类型：
--
作者：
Jenny，Laura A.;Shapiro，Lori R.;Meineke，Emily
定量分析近缘植物物种对昆虫植食性的敏感性差异对于理解植物功能性状的进化压力变化是很重要的。然而，经验measurementin situvariation草食动物跨越地理范围的植物-昆虫复合体是后勤困难。最近，人们开发了使用植物标本馆标本来研究大地理尺度上植物-昆虫共生模式的新方法。这样的调查提供了深入了解如何加速人为变化可能会影响植物-昆虫的相互作用，是生态或农业的重要性。MethodsHere，我们分析了274按标本馆样本调查的变化，在13个不同的物种的经济上重要的植物属南瓜（葫芦科）的草食动物的损害。这个集合是由野生的，undominatedCucurbitawhich是从他们的原生范围内收集的标本，andCucurbitacultivars收集从他们的原生范围内，并从他们已被引入农业在温带北美.ResultsHerbivory的位置是常见的在整个地理范围内收集的所有Cucurbitaspecies的个人。然而，草食动物的估计个体之间的差异很大，与中生植物物种积累更多的昆虫损害比旱生植物物种，和野生标本有更多的草食动物比标本从人类管理的habites.ConclusionsOur的研究表明，长期的进化变化，栖息地从干旱到中生气候和野生人类管理的栖息地可能介导的草食动物的压力水平从共同进化的草食动物。未来的调查，有助于植食性的潜在因素可能会告知驯化作物植物及其植食性昆虫的管理。
PremiseQuantifying how closely related plant species differ in susceptibility to insect herbivory is important for understanding the variation in evolutionary pressures on plant functional traits. However, empirically measuringin situvariation in herbivory spanning the geographic range of a plant–insect complex is logistically difficult. Recently, new methods have been developed using herbarium specimens to investigate patterns in plant–insect symbioses across large geographic scales. Such investigations provide insights into how accelerated anthropogenic changes may impact plant–insect interactions that are of ecological or agricultural importance.MethodsHere, we analyze 274 pressed herbarium samples to investigate variation in herbivory damage in 13 different species of the economically important plant genusCucurbita(Cucurbitaceae). This collection is composed of specimens of wild, undomesticatedCucurbitathat were collected from across their native range, andCucurbitacultivars collected from both within their native range and from locations where they have been introduced for agriculture in temperate North America.ResultsHerbivory is common on individuals of allCucurbitaspecies collected throughout their geographic ranges. However, estimates of herbivory varied considerably among individuals, with mesophytic species accruing more insect damage than xerophytic species, and wild specimens having more herbivory than specimens collected from human‐managed habitats.ConclusionsOur study suggests that long‐term evolutionary changes in habitat from xeric to mesic climates and wild to human‐managed habitats may mediate the levels of herbivory pressure from coevolved herbivores. Future investigations into the potential factors that contribute to herbivory may inform the management of domesticated crop plants and their insect herbivores.