| Title: | "alpha-Terpineol: An Aggregation Pheromone in Optatus palmaris (Coleoptera: Curculionidae) (Pascoe, 1889) Enhanced by Its Host-Plant Volatiles" |
| Author(s): | Pineda-Rios JM; Cibrian-Tovar J; Hernandez-Fuentes LM; Lopez-Romero RM; Soto-Rojas L; Romero-Napoles J; Llanderal-Cazares C; Salome-Abarca LF; |
| Address: | "Postgrado en Fitosanidad, Programa de Entomologia y Acarologia, Colegio de Postgraduados Campus Montecillo, Km 36.5 Carretera, Texcoco 56230, Mexico. Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias, Progreso Numero 5, Barrio de Santa Catarina, Delegacion Coyoacan, Ciudad de Mexico 04010, Mexico. Postgrado en Edafologia, Colegio de Postgraduados Campus Montecillo, Km 36.5 Carretera, Texcoco 56230, Mexico" |
| DOI: | 10.3390/molecules26102861 |
| ISSN/ISBN: | 1420-3049 (Electronic) 1420-3049 (Linking) |
| Abstract: | "The Annonaceae fruits weevil (Optatus palmaris) causes high losses to the soursop production in Mexico. Damage occurs when larvae and adults feed on the fruits; however, there is limited research about control strategies against this pest. However, pheromones provide a high potential management scheme for this curculio. Thus, this research characterized the behavior and volatile production of O. palmaris in response to their feeding habits. Olfactometry assays established preference by weevils to volatiles produced by feeding males and soursop. The behavior observed suggests the presence of an aggregation pheromone and a kairomone. Subsequently, insect volatiles sampled by solid-phase microextraction and dynamic headspace detected a unique compound on feeding males increased especially when feeding. Feeding-starvation experiments showed an averaged fifteen-fold increase in the concentration of a monoterpenoid on males feeding on soursop, and a decrease of the release of this compound males stop feeding. GC-MS analysis of volatiles identified this compound as alpha-terpineol. Further olfactometry assays using alpha-terpineol and soursop, demonstrated that this combination is double attractive to Annonaceae weevils than only soursop volatiles. The results showed a complementation effect between alpha-terpineol and soursop volatiles. Thus, alpha-terpineol is the aggregation pheromone of O. palmaris, and its concentration is enhanced by host-plant volatiles" |
| Keywords: | Animals Annona/metabolism Annonaceae/metabolism Coleoptera/*metabolism Cyclohexane Monoterpenes/*analysis/chemistry/*metabolism Feeding Behavior Gas Chromatography-Mass Spectrometry Host-Seeking Behavior Larva/metabolism Male Mexico Monoterpenes/metabolis; |
| Notes: | "MedlinePineda-Rios, Jose Manuel Cibrian-Tovar, Juan Hernandez-Fuentes, Luis Martin Lopez-Romero, Rosa Maria Soto-Rojas, Lauro Romero-Napoles, Jesus Llanderal-Cazares, Celina Salome-Abarca, Luis F eng Switzerland 2021/06/03 Molecules. 2021 May 12; 26(10):2861. doi: 10.3390/molecules26102861" |
