| Title: | "Olfactory Response of the Spotted Asparagus Beetle, Crioceris duodecimpunctata (L.) to Host Plant Volatiles" |
| Author(s): | Pistillo OM; D'Isita I; Germinara GS; |
| Address: | "Department of Agriculture, Food, Natural resources and Engineering, University of Foggia, Via Napoli, 25 -, 71122, Foggia, Italy. Department of Agriculture, Food, Natural resources and Engineering, University of Foggia, Via Napoli, 25 -, 71122, Foggia, Italy. giacinto.germinara@unifg.it" |
| DOI: | 10.1007/s10886-021-01323-5 |
| ISSN/ISBN: | 1573-1561 (Electronic) 0098-0331 (Linking) |
| Abstract: | "The spotted asparagus beetle, Crioceris duodecimpunctata (L.) is an invasive host-specific pest of asparagus cultivations. To contribute to the understanding of the role of plant volatiles in host-finding by this species, behavioural and electrophysiological tests were carried out. Y-tube olfactometer bioassays, testing intact or mechanically-damaged cladophylls vs. clean air, revealed sexually-dimorphic responses with males being the only sex attracted to both plant materials. Electroantennographic (EAG) assays showed that antennae of both sexes can perceive a wide range of asparagus volatiles. Male and female EAG profiles were almost similar and (Z)-3-hexen-1-ol was by far the most EAG-active compound. (E)-2-hexenal, (+/-)-linalool, and 3-heptanone elicited the strongest EAG amplitude within the corresponding chemical groups. Eight of the most EAG-active compounds elicited dose-dependent responses indicating the sensitivity of male and female olfactory systems to changes in stimulus concentration. In a Y-tube olfactometer bioassay, (Z)-3-hexen-1-ol at the doses of 1, 10, and 50 mug did not elicit female attraction whereas a significant attraction at the 10 mug dose and a repellent effect at the 50 mug dose was induced in males. Sexual dimorphism of male behavioural response to host plant volatiles is discussed. This study provides a basis for future investigations that could contribute to the development of semiochemical-based monitoring and management strategies for this pest" |
| Keywords: | Animals *Coleoptera Electrophysiological Phenomena Pheromones Plants Smell *Volatile Organic Compounds/pharmacology Asparagus officinalis Chrysomelidae Eag Kairomone Olfactometer bioassays VOCs; |
| Notes: | "MedlinePistillo, Onofrio Marco D'Isita, Ilaria Germinara, Giacinto Salvatore eng PSR program 2014-2020 - Sottomisura 16.2, DDS n.167, 28 July 2020. Title: 'Innovazioni e soluzioni sostenibili per l'asparago pugliese (AS_PARA)'./Regione Puglia/ 2021/11/06 J Chem Ecol. 2022 Jan; 48(1):41-50. doi: 10.1007/s10886-021-01323-5. Epub 2021 Nov 5" |
