Department of Evolutionary Ecology, Institute of Organismic and Molecular Evolution, Johannes Gutenberg University of Mainz, Johann-Joachim-Becherweg 13, 55128 Mainz, Germany.
Nat Prod Rep. 2018 May 25;35(5):386-397. doi: 10.1039/C7NP00068E.
Covering: up to 2018 Pheromones serve as chemical signals between individuals of the same species and play important roles for mate localization and mate choice as well as other social interactions in insects. A growing body of literature indicates that microbial symbionts can modulate their hosts' chemical profiles, mate choice decisions and social behavior. This modulation can occur by the direct biosynthesis of pheromone components or the provisioning of precursors, or through general changes in the metabolite pool of the host and its resource allocation into pheromone production. Here we review and discuss the contexts in which microbial modulation of intraspecific communication in insects occurs and emphasize cases in which microbes are known to affect the involved chemistry. The described examples for a symbiotic influence on mate attraction and mate choice, aggregation, nestmate and kin recognition highlight the context-dependent costs and benefits of these symbiotic interactions and the potential for conflict and manipulation among the interacting partners. However, despite the increasing number of studies reporting on symbiont-mediated effects on insect chemical communication, experimentally validated connections between the presence of specific symbionts, changes in the host's chemistry, and behavioral effects thereof, remain limited to very few systems, highlighting the need for increased collaborative efforts between symbiosis researchers and chemical ecologists to gain more comprehensive insights into the influence of microbial symbionts on insect pheromones.
截至 2018 年，信息素在同种个体之间充当化学信号，在昆虫的配偶定位和选择以及其他社会互动中发挥着重要作用。越来越多的文献表明，微生物共生体可以调节宿主的化学特征、配偶选择决策和社会行为。这种调节可以通过直接生物合成信息素成分或提供前体来实现，或者通过宿主代谢物库的一般变化及其资源分配到信息素生产中。在这里，我们回顾和讨论了微生物调节昆虫种内通讯的情况，并强调了已知微生物影响所涉及化学物质的情况。描述的共生体对配偶吸引力和配偶选择、聚集、巢内同伴和亲属识别的影响的例子突出了这些共生相互作用的背景依赖性成本和收益，以及相互作用的伙伴之间存在冲突和操纵的可能性。然而，尽管越来越多的研究报告了共生体对昆虫化学通讯的影响，但在存在特定共生体、宿主化学物质变化以及行为影响之间存在实验验证的联系仍然仅限于极少数系统，这突出表明需要增加共生体研究人员和化学生态学家之间的合作努力，以更全面地了解微生物共生体对昆虫信息素的影响。
