Sex pheromones and attractants in the Eucosmini and Grapholitini (Lepidoptera,Tortricidae) |
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| Authors: | Peter Witzgall Jean-Pierre Chambon Marie Bengtsson C Rikard Unelius Monica Appelgren Gyorgy Makranczy N Muraleedharan Darwin W Reed Klaus Hellrigl Hans-Ruedi Buser Eric Hallberg Gunnar Bergström Miklos Tóth Christer Löfstedt Jan Löfqvist |
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| Institution: | (1) Department of Plant Protection Sciences, Swedish University of Agricultural Sciences, S-23053 Alnarp, Sweden;(2) Department of Zoology, National Institute of Agronomical Research, F-78026 Versailles cedex, France;(3) Department of Organic Chemistry, Royal Institute of Technology, S-10044 Stockholm, Sweden;(4) Department of Chemical Ecology, Göteborg University, S-41319 Göteborg, Sweden;(5) Plant Protection Institute, Hungarian Academy of Sciences, H-1525 Budapest, Hungary;(6) Tea Research Institute, The United Planters' Association of Southern India, 642127 Valparai, India;(7) Plant Biotechnology Institute, National Research Council, S7N 0W9 Saskatoon, Canada;(8) Wolkensteinstr. 83, I-39042 Brixen, Italy;(9) Swiss Federal Research Station, CH-8820 Wädenswil, Switzerland;(10) Department of Zoology, Lund University, S-22362 Lund, Sweden;(11) Department of Ecology, Lund University, S-22362 Lund, Sweden |
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| Abstract: | Summary The geometric isomers (E,E)-, (E,Z)-, (Z,E)-, and (Z,Z)-8,10-dodecadien-1-yl acetate were identified as sex pheromone components or sex attractants in the tribes Eucosmini and Grapholitini of the tortricid subfamily Olethreutinae. Species belonging to the more ancestral Tortricinae were not attracted. Each one isomer was behaviourally active in males ofCydia andGrapholita (Grapholitini), either as main pheromone compound, attraction synergist or attraction inhibitor. Their reciprocal attractive/antagonistic activity in a number of species enables specific communication with these four compounds.Pammene, as well as otherGrapholita andCydia responded to the monoenic 8- or 10-dodecen-1-yl acetates. Of the tribes Olethreutini and Eucosmini,Hedya, Epiblema, Eucosma, andNotocelia trimaculana were also attracted to 8,10-dodecadien-1-yl acetates, but several otherNotocelia to 10,12-tetradecadien-1-yl acetates. The female sex pheromones ofC. fagiglandana, C. pyrivora, C. splendana, Epiblema foenella andNotocelia roborana were identified. (E,E)- and (E,Z)-8,10-dodecadien-1-yl acetate are producedvia a commonE9 desaturation pathway inC. splendana. CallingC. nigricana andC. fagiglandana females are attracted to wingfanning males. |
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| Keywords: | sex pheromone synergist antagonist mate recognition reproductive isolation chemotaxonomoy phylogeny evolution Lepidoptera Tortricidae |
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