title: The odor of a plant metabolite affects life history traits in dietary restricted adult olive flies.
abstract: Food quality shapes life history traits either directly or through response of individuals to additional environmental factors, such as chemical cues. Plant extracts used as food additives modulate key life history traits; however little is known regarding such effects for olfactory chemical cues. Exploiting an interesting experimental system that involves the olive fly (Bactrocera oleae) and the plant metabolite α-pinene we asked whether exposure of adults to this compound modulates adult longevity and female reproduction in similar manner in a stressful - dietary (protein) restricted (DR) and in a relaxed- full diet (FD) feeding environment. Accordingly, we exposed males and females to the aroma of α-pinene and measured lifespan and age-specific fecundity in the above two dietary contexts. Our results demonstrate that exposure to α-pinene increased longevity in males and fecundity in females only under dietary restricted conditions. In relaxed food conditions, females exposed to α-pinene shifted high egg-laying towards younger ages compared to non-exposed ones. This is the first report demonstrating that a plant compound affects key life history traits of adult olive flies through olfaction. These effects are sex-specific and more pronounced in dietary restricted adults. Possible underlying mechanisms and the ecological significance are discussed.
authors.affiliation: Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Phytokou St., 38446 N. Ionia Magnisia, Greece.
authors.forename: Christos D
authors.initials: CD
authors.lastname: Gerofotis
authors.affiliation: Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Phytokou St., 38446 N. Ionia Magnisia, Greece.
authors.forename: Charalampos S
authors.initials: CS
authors.lastname: Ioannou
authors.affiliation: Laboratory of Biometry, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Phytokou St., 38446 N. Ionia Magnisia, Greece.|University Institute of Clinical Chemistry, Centre of Laboratory Medicine, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland.
authors.forename: Christos T
authors.initials: CT
authors.lastname: Nakas
authors.affiliation: Laboratory of Entomology and Agricultural Zoology, Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Phytokou St., 38446 N. Ionia Magnisia, Greece.
authors.forename: Nikos T
authors.initials: NT
authors.lastname: Papadopoulos
mesh_terms: D000818:Animals; D000081008:Bicyclic Monoterpenes; D031204:Caloric Restriction / Q000379:methods; D004032:Diet / Q000379:methods; D004175:Diptera / Q000502:physiology*; D005260:Female; D005298:Fertility / Q000187:drug effects; D000071421:Life History Traits; D008136:Longevity / Q000187:drug effects*; D008297:Male; D039821:Monoterpenes / Q000494:pharmacology*; D009812:Odorants; D031658:Olea / Q000502:physiology*; D012098:Reproduction; D033621:Tephritidae / Q000502:physiology*
chemical_list: D000081008:Bicyclic Monoterpenes; D039821:Monoterpenes; C005451:alpha-pinene