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- W2135014257 abstract "Abstract Pheromone producing males of the two subspecies, Ips amitinus and Ips amitinus var. montana , respectively, are fully cross‐attractive to field populations of both subspecies and produce identical patterns of male‐specific terpene alcohols upon feeding in the phloem tissue of their respective host trees, Picea abies and Pinus cembra : major amounts of ipsdienol along with lesser amounts of amitinol, cis‐, trans ‐verbenol, myrtenol and traces of ipsenol. The absolute configuration of ipsdienol and ipsenol produced by feeding I. a. montana males was determined by gaschromatographic enantiomer separation of the natural products as ( S )‐(+)‐ipsdienol and ( S )‐(‐)‐ipsenol, respectively. After joining the males, females release 2‐methyl‐3‐butene‐2‐ol which is produced by males only in trace amounts. Zusammenfassung Das Pheromonsystem von Ips amitinus (Eichh.) und Ips amitinus var. montana Fuchs (Col., Scolytidae ) Die winswählenden Männchen der beiden Unterarten von Ips amitinus lösen die Aggregation aus und produzieren ein vergleichbares Bouquet käferspezifischer Terpenalkohole: Große Mengen Ipsdienol, geringere Mengen cis‐, trans ‐Verbenol, Myrtenol sowie Spuren an Ipsenol. Die absolute Konfiguration der chiralen Pheromone Ipsdienol und Ipsenol ist bei I. a. montana ( S )‐(+)‐Ipsdienol und ( S )‐(‐)‐Ipsenol. Die nahezu identischen Duftbouquets sowie die gegenseitige Anlockung von Käfern beider Unterarten durch pheromonproduzierende Männchen zeigt, daß die Anpassung der beiden Unterarten an unterschiedliche Wirtsbaumarten nicht mit einer Differenzierung der Pheromonsysteme verbunden war. Die Weibchen beider Unterarten geben 2‐Methyl‐3‐buten‐2‐ol ab, das in den Männchen allenfalls in Spuren nachweisbar ist." @default.
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- W2135014257 date "1993-01-12" @default.
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- W2135014257 title "Odour production and pheromone response in the European engraver bark beetles, <i>Ips amitinus</i> (Eichh.) and <i>Ips amitinus</i> var. <i>montana</i> Fuchs (Col., Scolytidae)" @default.
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- W2135014257 doi "https://doi.org/10.1111/j.1439-0418.1993.tb00415.x" @default.
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