Host selection in Tomicus piniperda L.: composition of monoterpene hydrocarbons in relation to attack frequency in the shoot feeding phase.
2006
Almquist , Ann-Charlotte (Royal Institute of Technology in Stockholm, Stockholm(Suède). Department of Chemistry) | Fäldt , Jenny (Royal Institute of Technology in Stockholm, Stockholm(Suède). Department of Chemistry) | Yart , Annie (INRA (France). UR 0633 Unité de Recherche Zoologie Forestière) | Chevet , Yohann (INRA (France). UR 0633 Unité de Recherche Zoologie Forestière) | Sauvard , Daniel (INRA (France). UR 0633 Unité de Recherche Zoologie Forestière) | Lieutier , François (Université d'Orléans, Orléans(France). Laboratoire de biologie des ligneux et des grandes cultures) | Borg-Karlson , Anna-Karin (Royal Institute of Technology in Stockholm, Stockholm(Suède). Department of Chemistry)
The aim of this study was to investigate the host selection capacity of the pine shoot beetle, Tomicus piniperda, in the shoot-feeding phase and analyze the chiral and non-chiral host volatiles by means of GC-MS and 2D-GC in five Pinus species originating from France (Pinus sylvestris, P. halepensis, P. nigra laricio, P. pinaster maritima, P. pinaster mesogeensis). Dominating monoterpenes were (-)- alpha -pinene, (+)- alpha -pinene, (-)- beta -pinene and (+)-3-carene. The amounts of the enantiomers varied considerably within and among the species. In a principal component analysis-plot, based on the absolute amounts of 18 monoterpene hydrocarbons, separation of the pine species into two groups was obtained. P. halepensis and P. sylvestris were grouped according to the amount of (+)- alpha -pinene and (+)-3-carene, while P. nigra laricio, P. pinaster maritima and P. pinaster mesogeensis were grouped according to (-)- alpha -pinene and (-)- beta -pinene. P. nigra laricio was the species most attacked and P. halepensis the one least attacked by T. piniperda.
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