Olive fruit volatiles route intraspecific interactions and chemotaxis in Bactrocera oleae (Rossi) (Diptera: Tephritidae) females
| Autor: | Giulia Giunti, Giuseppe M. Algeri, Francesca Laudani, Vincenzo Palmeri, Orlando Campolo |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Behavioural ecology Acyclic Monoterpenes Oviposition Olfactory cues lcsh:Medicine Alkenes medicine.disease_cause 010603 evolutionary biology 01 natural sciences Article Gas Chromatography-Mass Spectrometry Host Specificity Pheromones Intraspecific competition Food Preferences chemistry.chemical_compound Olea Tephritidae Infestation medicine Animals Bactrocera Cultivar lcsh:Science Volatile Organic Compounds Limonene Multidisciplinary biology Chemotaxis lcsh:R Animal behaviour biology.organism_classification Smell 010602 entomology Horticulture chemistry Fruit Kairomone Odorants Female lcsh:Q |
| Zdroj: | Scientific Reports, Vol 10, Iss 1, Pp 1-10 (2020) Scientific Reports |
| Popis: | Plant nutritional quality and chemical characteristics may affect the fitness of phytophagous insects. Here, the olfactory preferences of Bactrocera oleae (Rossi) females toward olives with different maturation and infestation status were evaluated in three cultivars: Ottobratica, Roggianella and Sinopolese. Volatile profiles from olives were identified by SPME/GC-MS. Choice tests were performed to determine the responses of B. oleae adult females toward fruits and pure chemicals linked to infestation degree. Cultivar was the main source of variability explaining the differences recorded in volatile emissions. Moreover, three VOCs [β-myrcene, limonene and (E)-β-ocimene] were associated to infestation status across all olive varieties. In choice-tests, B. oleae females always preferred the olfactory cues from low-infested over high-infested fruits. Therefore, choice-tests using synthetic VOCs, emitted in greater amount by high-infested fruit, were arranged in order to identify putative B. oleae kairomones. While females were indifferent to β-myrcene, the highest dosages of limonene and (E)-β-ocimene were unfavoured by the tested flies, which preferentially moved toward the empty arm of the Y-tube. Furthermore, females preferred the lowest concentration of β-ocimene compared to the highest one. These results supported our hypothesis that fruit VOCs may serve as kairomones for female flies. |
| Databáze: | OpenAIRE |
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