Environmentally regulated abiotic release of volatile pheromones from the sugar-based oral secretions of caribflies

Green Chemistry Letters and Reviews

Spencer S. Walse¹ 

关键词: controlled release;    pheromones;    tephritid fruit flies;    environmental processing;    γ-lactones;   

DOI  :  10.1080/17518250902758895

学科分类：化学（综合）

来源: Taylor & Francis

【 摘 要 】

We report an abiotic mechanism for the emission of volatile insect pheromones that is controlled by environmentally induced change in the physicochemical properties of the sugar-based release matrix. Male Anastrepha suspensa (Loew) (caribflies) mark mating sites on leaf surfaces by depositing oral secretions that contain sugar, as well as, γ-hydroxy acid and γ-lactone forms of the diastereomeric aggregation pheromones, epianastrephin and anastrephin. The γ-hydroxy acids extend emission over many days via aqueous equilibrium with the thermodynamically less preferred, but more volatile, γ-lactones (∼100:1). A kinetic model, which supports a γ-lactone diffusion-limited rate, was generated and tested by measuring the effect of temperature and humidity under fixed and ambient atmospheric inputs, respectively. Results show that pheromone release from the markings occurs with a periodicity that parallels relative humidity and complements the daily pattern of the caribflies’ reproductive and aggregative ...

【 授权许可】

Unknown