Innate responses to putative ancestral hosts: is the attraction of Western flower thrips to pine pollen a result of relict olfactory receptors?
Innate responses to putative ancestral hosts: is the attraction of Western flower thrips to pine pollen a result of relict olfactory receptors?
复制标题
DOI：
10.1007/s10886-014-0450-0
复制
发表时间：
2014-06
影响因子：
2.3
通讯作者：
Butt, Tariq M.
中科院分区：
文献类型：
--
作者：
Abdullah, Zayed S.;Ficken, Katherine J.;Greenfield, Bethany P. J.;Butt, Tariq M.
关键词：
食花粉在缨翅目（Thysanoptera）中被广泛记录，已知以花粉为食的9个不同家族中有6个具有代表性。松属植物的各种花粉增加了花蓟马的发育时间、繁殖力、寿命和定居偏好。某些种类的花蓟马区分花粉类型，但没有研究阐明嗅觉线索在其花粉偏好中发挥作用。本研究对松属植物花粉中挥发性有机物进行了研究。花粉顶空中的各种化学物质引起WFT触角的电生理反应。在花粉顶空中鉴定的化合物（S）-（-）-马鞭草烯酮在四臂嗅觉仪中吸引WFT。该化合物具有用于针对该害虫的综合害虫管理方案的潜力。我们提出的假设，这种多食性昆虫可能保留了祖先的“残余”嗅觉受体通过进化的过程中，解释这种吸引力松花粉。这种吸引力使昆虫能够找到并利用一种不寻常的营养源，从而显着增加其适应性。这项研究展示了化石记录分析和随后的进化知识如何有助于解释为什么一些昆虫会感知并对化学物质做出反应的可能性，这些化学物质在它们的生态中似乎是特有的，从而可以深入了解随着时间的推移可能塑造昆虫嗅觉系统的进化力量。本文的在线版本（doi：10.1007/s10886-014-0450-0）包含补充材料，可供授权用户使用。
Pollinophagy is widely documented in the order Thysanoptera, with representative individuals from six of the nine divergent families known to feed on pollen. Various pollens of the genus Pinus increase the development time, fecundity, longevity, and settling preference of Western Flower Thrips (WFT), Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae). Certain species of flower thrips discriminate among pollen types, but no studies have elucidated the olfactory cues that play a role in their pollen preferences. In this study, the volatile organic compounds emitted by pollens of the genus Pinus were elucidated. Various chemicals from pollen headspace elicited electrophysiological responses from WFT antennae. The compound (S)-(-)-verbenone, identified in pollen headspace, attracted WFT in a 4-arm olfactometer. This compound has potential for use in integrated pest management programs against the pest. We present the hypothesis that this polyphagous insect may have retained ancestral ‘relict’ olfactory receptors through the course of evolution, to explain this attraction to pine pollen. This attraction has allowed the insect to find and exploit an unusual nutrient source that significantly increases its fitness. The study demonstrates how fossil record analysis and subsequent evolutionary knowledge can aid in explaining possibilities as to why some insects sense and respond to chemicals that would otherwise seem peculiar to their ecology, allowing insight into the evolutionary forces that may shape insect olfactory systems over time. The online version of this article (doi:10.1007/s10886-014-0450-0) contains supplementary material, which is available to authorized users.
登录
查看更多内容
影响因子：
4.1
作者：
Bielza, Pablo
通讯作者：
Bielza, Pablo
影响因子：
1.7
作者：
Cook, William M.;Faeth, Stanley H.
通讯作者：
Faeth, Stanley H.
影响因子：
1.7
作者：
Progar, RA
通讯作者：
Progar, RA
影响因子：
2.2
作者：
KIRK, WDJ
通讯作者：
KIRK, WDJ
影响因子：
2.2
作者：
PAYNE, TL;BILLINGS, RF
通讯作者：
BILLINGS, RF