Pullock, Dylan AndrewKruger, KerstinManrakhan, ArunaYusuf, Abdullahi AhmedPirk, Christian Walter Werner2025-03-262025-03-262024-11Pullock, D.A., Kruger, K., Manrakhan, A. et al. 2024, 'Addition of selected plant-derived semiochemicals to yellow sticky traps does not improve citrus psyllid captures', Journal of Chemical Ecology', Journal of Chemical Ecology, vol. 50, pp. 701-713. https://DOI.org/10.1007/s10886-024-01491-0.0098-0331 (print)1573-1561 (online)10.1007/s10886-024-01491-010.25403/UPresearchdata.25028219.http://hdl.handle.net/2263/101737ACKNOWLEDGEMENTS : We are grateful to Evans Mauda (Citrus Research International, South Africa) for training in the identification of psyllids. Msizi Ramaoka and Tania Pogue helped to set up field cage experiments. We thank two anonymous reviewers for comments that improved the manuscript.DATA AVAILABILITY : The experimental data that support the findings of this study are publicly available. The data can be found here: https://doi.org/10.25403/UPresearchdata.25028219.Fast and effective monitoring and surveillance techniques are crucial for the swift implementation of control methods to prevent the spread of Huanglongbing, a devastating citrus disease, and its invasive psyllid vector, Asian citrus psyllid, Diaphorina citri, into South Africa, as well as to control the native vector, African citrus triozid, Trioza erytreae. Monitoring for citrus psyllid pests can be improved by using semiochemical odorants to augment already visually attractive yellow sticky traps. However, environmental variables such as temperature and humidity could influence odorant release rates. Five field cages were used to test the ability of a selection of odorants to improve yellow sticky trap efficacy in capturing citrus psyllids. Environmental effects on odorant loss from the dispensers were also investigated. The odorants that most improved yellow sticky trap captures in field cages were then tested under open field conditions alongside lower concentrations of those same lures. Gas chromatography-mass spectrometry was used to calculate odorant release rates as well as to determine if any contamination occurred under field conditions. None of the odorants under field cage or field conditions significantly improved psyllid capture on yellow sticky traps. Temperature influenced odorant loss, and release rate from polyethylene bulbs decreased over time. Based on these results, the use of unbaited yellow sticky traps seems to be the most effective method for monitoring of Huanglongbing vectors.en© The Author(s) 2024. Open access. This article is licensed under a Creative Commons Attribution 4.0 International License.Diaphorina citriTrioza erytreaeOdorantsHuanglongbingTemperatureIntegrated pest management (IPM)SDG-02: Zero hungerSDG-15: Life on landCitrusSDG-13: Climate actionArticle