Poldy Jacqueline
Commonwealth Scientific and Industrial Research Organisation, Health & Biosecurity, Black Mountain Laboratory, Canberra, ACT 2601, Australia.
Animals (Basel). 2020 Oct 28;10(11):1984. doi: 10.3390/ani10111984.
Many arthropod pests of humans and other animals select their preferred hosts by recognising volatile odour compounds contained in the hosts' 'volatilome'. Although there is prolific literature on chemical emissions from humans, published data on volatiles and vector attraction in other species are more sporadic. Despite several decades since the identification of a small number of critical volatiles underpinning specific host-vector relationships, synthetic chemicals or mixtures still largely fail to reproduce the attractiveness of natural hosts to their disease vectors. This review documents allelochemicals from non-human terrestrial animals and considers where challenges in collection and analysis have left shortfalls in animal volatilome research. A total of 1287 volatile organic compounds were identified from 141 species. Despite comparable diversity of entities in each compound class, no specific chemical is ubiquitous in all species reviewed, and over half are reported as unique to a single species. This review provides a rationale for future enquiries by highlighting research gaps, such as disregard for the contribution of breath volatiles to the whole animal volatilome and evaluating the role of allomones as vector deterrents. New opportunities to improve vector surveillance and disrupt disease transmission may be unveiled by understanding the host-associated stimuli that drive vector-host interactions.
许多人类和其他动物的节肢动物害虫通过识别宿主“挥发组”中含有的挥发性气味化合物来选择它们偏爱的宿主。尽管关于人类化学排放物的文献很多,但关于其他物种挥发物及其对病媒吸引力的已发表数据则较为零散。自确定了少数支撑特定宿主与病媒关系的关键挥发物以来,几十年过去了,合成化学品或混合物在很大程度上仍无法重现天然宿主对其病媒的吸引力。本综述记录了非人类陆生动物的异种化感物质,并探讨了采集和分析方面的挑战在动物挥发组研究中留下的不足。从141个物种中总共鉴定出1287种挥发性有机化合物。尽管每个化合物类别中的实体具有相当的多样性,但在所审查的所有物种中,没有一种特定的化学物质是普遍存在的,超过一半的物质据报道是单一物种所特有的。本综述通过突出研究空白,为未来的研究提供了理论依据,比如忽视呼吸挥发物对整个动物挥发组的贡献,以及评估异种信息素作为病媒威慑物的作用。通过了解驱动病媒与宿主相互作用的宿主相关刺激因素,可能会揭示改善病媒监测和阻断疾病传播的新机会。