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    3,7-Dimethylpentadecane: a Novel Sex Pheromone Component fromLeucoptera sinuella(Lepidoptera: Lyonetiidae)

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    Date
    2020
    Author

    Barros-Parada, Wilson

    Bergmann, Jan

    Curkovic, Tomislav

    Espinosa, Cristián

    Fuentes-Contreras, Eduardo

    Guajardo, Jorge

    Herrera, Heidy [Univ Mayor, Fac Estudios Interdisciplinarios, Nucleo Quim & Bioquim, Chile]

    Morales, Sebastián

    Queiroz, Abel F. O.

    Vidal, Alvaro

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    Abstract
    Leucoptera sinuellais a leaf-miner moth present in several regions in the world, which has been recently introduced into Chile. The larvae feed exclusively on the leaves of poplar and willow trees, and the damage caused by the feeding behavior poses a threat to the wood-producing industry. Besides,L. sinuellalarvae invade nearby orchards for pupation, causing rejections in Chilean fresh fruit for export. Here we report the identification of the female-produced sex pheromone ofL. sinuellaas a first step towards the development of pheromone-based methods for pest management of this species. First, we analyzed hexane extracts of the abdominal glands of virgin females by gas chromatography coupled with mass spectrometry and identified the major compound in these extracts to be 3,7-dimethylpentadecane, while minor compounds in the extracts proved to be 3,7-dimethyltetradecane and 7-methylpentadecane. Structure assignments were carried out by comparison of retention times and mass spectra of the natural products with those of authentic reference samples. Second, we conducted field tests, which showed that traps baited with synthetic 3,7-dimethylpentadecane were significantly attractive to males in a dose-dependent response. Our results also showed that a mixture of 3,7-dimethylpentadecane, 3,7-dimethyltetradecane, and 7-methylpentadecane in proportions similar to those found in gland extracts was the most attractive lure.
    URI
    http://repositorio.umayor.cl/xmlui/handle/sibum/8145
    https://repositorio.uchile.cl/handle/2250/177384
    https://doi.org/10.1007/s10886-020-01208-z
    https://link.springer.com/article/10.1007%2Fs10886-020-01208-z
    https://pubmed.ncbi.nlm.nih.gov/32770448/
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    Modificado por: Sistema de Bibliotecas Universidad Mayor - SIBUM
    DSpace software copyright © 2002-2018  DuraSpace