AUTHOR=Bengtsson Marie , Boutitie Anne , Jósvai Julia , Toth Miklos , Andreadis Stefanos , Rauscher Stefan , Unelius C. Rikard , Witzgall Peter 

TITLE=Pheromone races of Cydia splendana (Lepidoptera, Tortricidae) overlap in host plant association and geographic distribution

JOURNAL=Frontiers in Ecology and Evolution

VOLUME=2

YEAR=2014

URL=https://www.frontiersin.org/journals/ecology-and-evolution/articles/10.3389/fevo.2014.00046

DOI=10.3389/fevo.2014.00046

ISSN=2296-701X

ABSTRACT=<p>Identification of the sex pheromone of <italic>Cydia splendana</italic> (Lepidoptera, Tortricidae) by pheromone gland analysis followed by field trapping with synthetic compounds shows the occurrence of two pheromone races. Acorn moth females from Sweden, where oak <italic>Quercus robur</italic> is the only host plant, use a blend of the <italic>E</italic>,<italic>Z</italic> and <italic>E</italic>,<italic>E</italic> isomers of 8,10-dodecadien-1-yl acetate. In Central and Southern Europe, where <italic>C. splendana</italic> feeds on chestnut <italic>Castanea sativa</italic> and several species of oak, males respond to another isomer blend, <italic>E</italic>,<italic>E</italic> and <italic>Z</italic>,<italic>E</italic>. The distribution of the two pheromone races of <italic>C. splendana</italic> overlaps in Northern France, where they share oak as plant host. Differences in sex communication signals between these populations of <italic>C. splendana</italic> corroborate the role of specific mate recognition in speciation events.</p>