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Female detection of the synthetic sex pheromone contributes to the efficacy of mating disruption of the European grapevine moth, Lobesia botrana
Author(s) -
Harari Ally R,
Zahavi Tirtza,
Steinitz Hadass
Publication year - 2015
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.3830
Subject(s) - mating disruption , pheromone , biology , sex pheromone , mating , pest analysis , fecundity , zoology , insect , toxicology , pheromone trap , ecology , botany , population , demography , sociology
Abstract BACKGROUND Studies of the mechanisms by which mating‐disruption techniques control insect pest populations have traditionally focused on the effects of the species‐specific sex pheromone on the male moths, while neglecting possible direct effects of the pheromone on females. Here, the effects of exposure to synthetic species‐specific sex‐pheromone on Lobesia botrana (European grapevine moth) females were tested. RESULTS Females in vineyards that were treated with mating‐disruption pheromone burst into short bouts of flying more frequently, but called significantly less frequently than females in untreated plots. Reduced calling caused by exposure to the species‐specific sex‐pheromone may increase the age at which females mate and thereby reduce female fecundity. Females that called in a pheromone‐saturated environment experienced a decrease in number of oviposited eggs. A further decrease in reproductive success may occur if females delay oviposition when exposed to access of the synthetic pheromone. CONCLUSIONS In addition to reducing the ability of males to locate females, the mating‐disruption technique can suppress pest numbers as a consequence of its direct effects on females. The two mechanisms probably act synergistically. © 2014 Society of Chemical Industry