Abstract
We describe the identification and field testing of 3-methylthiopropan-1-ol (methionol) as a male-produced aggregation-sex pheromone for the cerambycid beetle Knulliana cincta cincta (Drury) (subfamily Cerambycinae, tribe Bothriospilini). The corresponding sulfoxide, 3-methylsulfinylpropan-1-ol, was also produced sex-specifically by males, but its function remains unclear because the measured release rates of this compound from five different types of release devices were very low to undetectable. Unexpectedly, adults of the cerambycine Elaphidion mucronatum (Say) (Elaphidiini), primarily females, also were attracted by methionol, despite males of this species producing an aggregation-sex pheromone of entirely different structure, (2E,6Z,9Z)-2,6,9-pentadecatrienal.
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Acknowledgments
We thank John Pearson and the Iowa Department of Natural Resources for access to Nine Eagles State Park, and Linnea R. Meier, Todd D. Johnson, Heidi Pierce, Lorenzo D’Alessio, and Aaron Blue for assistance with field work in Illinois. We also thank Ian Swift and personnel from the Los Angeles County Parks who assisted with field work and access to sites in California for T. a. armatum. We appreciate continuous funding support from a series of grants from the United States Department of Agriculture, National Institute for Food and Agriculture (USDA-NIFA) to JGM and LMH during the course of the studies reported here.
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The research was conceived by JGM and LMH, insect-produced chemicals were identified by JGM, JAMD, RFM, and AMR, fieldwork was conducted by MER and ACG, release rates were measured by SH, data were analyzed by LMH, and the manuscript was drafted by LMH and critically revised by all the authors.
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This research was funded by a series of grants from the United States Department of Agriculture, National Institute for Food and Agriculture (USDA-NIFA) to JGM and LMH. The authors have no relevant financial or non-financial interests to disclose.
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Rice, M.E., Hanks, L.M., Halloran, S. et al. Methionol, a Sulfur-Containing Pheromone Component from the North American Cerambycid Beetle Knulliana cincta cincta. J Chem Ecol 48, 347–358 (2022). https://doi.org/10.1007/s10886-022-01351-9
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DOI: https://doi.org/10.1007/s10886-022-01351-9