文章基本信息

标题：Domestic cat damage to plant leaves containing iridoids enhances chemical repellency to pests
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作者：Reiko Uenoyama ; Tamako Miyazaki ; Masaatsu Adachi 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2022
卷号：25
期号：7
页码：1-17
DOI：10.1016/j.isci.2022.104455
语种：English
出版社：Elsevier
摘要：SummaryCatnip (Nepeta cataria) and silver vine (Actinidia polygama) produce iridoids with arthropod-repellent effects. Cats rub and roll against these plants, transferring iridoids to their fur that repels mosquitoes. Cats also lick and chew plant leaves during this response, although the benefit of this additional behavior has remained unknown. Here, we show that feline leaf damage substantially increases iridoid emission from both plants while also diversifying iridoids in silver vine. Cats show an equivalent duration of response to the complex cocktail of iridoids in damaged silver vine and to the much higher level of a single iridoid produced by damaged catnip. The more complex iridoid cocktail produced when silver vine is licked and chewed by cats increases mosquito repellency at low concentration. In conclusion, feline leaf damage contributes by releasing more mosquito-repellent iridoids. Feline olfactory and behavioral sensitivity is fine-tuned to plant-specific iridoid production for maximizing the mosquito repellency gained.Graphical abstractDisplay OmittedHighlights•Feline damage of specific plants increases release of iridoids that repel mosquitoes•Damaged silver vine emits a relatively low amount of complex iridoids•Damaged catnip emits a high amount of the predominant iridoid nepetalactone•Cat responsiveness to these damaged plants is similar despite different iridoid emissionsbiological science, ethology, zoology