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1Author    Niedersächsische Forstliche Versuchsanstalt, Göttingen, Heinrich ArnRequires cookie*
 Title    Wolfgang Altenkirch  
 Abstract    Electrophysiological recordings from antennal hair sensilla of male P. flam m ea revealed two types (A, B) of presumed pheromone receptor cells. The A receptors responded max­ imally to (Z)-9-tetradecenyl acetate and the B cells to (Z)-11-tetradecenyl acetate. In the field, a 100:5 mixture of the two compounds attracted 10 times more males than the (Z) -9 isomer alone. 
  Reference    Z. Naturforsch. 33c, 1000 (1978); received September 13 1978 
  Published    1978 
  Keywords    Pheromones, Sex Attractant, Alkenyl Acetates, Olfactory Receptors, Noctuidae 
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 TEI-XML for    default:Reihe_C/33/ZNC-1978-33c-1000_n.pdf 
 Identifier    ZNC-1978-33c-1000_n 
 Volume    33 
2Author    Ernst Priesner, Hans-Jürgen Bestmann, Otto Vostrowsky, Peter RöselRequires cookie*
 Title    Sensory Efficacy of Alkyl-Branched Pheromone Analogues in Noctuid and Tortricid Lepidoptera  
 Abstract    The effect of introducing alkyl substituents (methyl to pentyl) to the chain segment n in long-chain alkenyl acetates, CH3(CH2)nCH = CH(CH2) O T -0-C0CH3 (I), was investigated in pheromone receptors of Noctuidae, Tortricidae, and Cochylidae species. The receptor types studied were maximally responsive to (Z)-7-or (Z)-9-dodecen-l-yl acetate, (Z)-l-, (Z)-9-, or (Z)-11-tetradecen-1-yl acetate, or (Z)-11-hexadecen-l-yl acetate, representing key compounds with re = l, n = 3, or n = 5 methylene groups. In terms of the relative stimulus amounts required to elicit equivalent EAG amplitudes, the efficacy of the alkyl-branched derivatives was between 1/1000 to 300 times that of the unbranched chain of the same length and double bond position. The effects of branching were specific to the type of receptor, the length and double bond position of the parent chain, and the kind and position of the alkyl substituent. The most pronounced increase observed occurred with receptors for « = 1 type pheromones, (Z)-9-dodecen-l-yl acetate and (Z) -11-tetradecen-l-yl acetate when an a-methyl group was introduced to elongated derivatives; whereas the greatest decreasing effects were obtained on receptors for the n = 5 type compound, (Z)-7-tetradecen-l-yl acetate. The results show basic differences in structure-response relationships between the Noctuidae vs Tortricidae receptors studied. Various possible effects of the substituent groups during sensory transduction are considered. The data should contribute to further elucidation of interaction mechanisms of unbranched alkenyl acetate pheromones (I) with insect olfactory receptors. 
  Reference    (Z. Naturforsch. 32c, 979 [1977]; received August 15 1977) 
  Published    1977 
  Keywords    Pheromones, Alkenyl Acetates, Olfactory Receptors, Structure-Activity Relationships, Lepidoptera 
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 TEI-XML for    default:Reihe_C/32/ZNC-1977-32c-0979.pdf 
 Identifier    ZNC-1977-32c-0979 
 Volume    32 
3Author    Ernst PriesnerRequires cookie*
 Title    The Pheromone Receptor System o f M ale Eulia ministrana L., with N otes on Other Cnephasiini M oths  
 Abstract    The antennal Sensilla trichodea o f male Eulia ministrana (Tortricidae: Cnephasiini) contain specialist receptor cells for the sex-attractant components (Z)-9-and (Z)-l 1-tetra-decenyl acetate and the attraction-inhibitors (E)-11 -tetra-decenyl acetate, (Z)-7-dodecenyl acetate, and (Z)-11 -hexa-decenyl acetate. The significance o f the latter two com ­ pounds as potential sex pheromone com ponents in Tortri­ cidae is considered. 
  Reference    Z. Naturforsch. 39c, 849 (1984); received May 4 1984 
  Published    1984 
  Keywords    Sex-Attractant, Attraction-Inhibitors, Alkenyl Acetates, Olfactory Receptors, Tortricidae 
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 TEI-XML for    default:Reihe_C/39/ZNC-1984-39c-0849_n.pdf 
 Identifier    ZNC-1984-39c-0849_n 
 Volume    39 
4Author    Emst PriesnerRequires cookie*
 Title    Sex Attractant System in Polia pisi L. (Lepidoptera: Noctuidae)  
 Abstract    Electrophysiological analysis o f olfactory h air sensilla in male P. pisi has revealed four different types o f presum ed pherom one receptor cells, maximally responsive to (Z)-ll-tetradecenyl acetate (Z ll-1 4 :A c), (Z)-9-tetradecenyl acetate (Z 9-14:A c), (Z)-l 1-hexadecenyl acetate (Z ll-1 4 :A c) and (Z)-7-dodecenyl acetate (Z7-12: Ac), respectively. These four compounds were tested, singly and in various combinations, for efficacy in attracting P. pisi males in the field. High trap catches were obtained with mixtures of Z ll-1 4 :A c /Z 9 -1 4 :A c in the ratio 100/100, whereas the 100/30 and 30/100 mixtures o f the two compounds were only slightly attractive. N o male P. pisi were captured by single chemicals or binary combinations o f Z ll-1 4 :A c /Z ll-1 6 :A c , Z ll-1 4 :A c /Z 7 -1 2 :A c , Z 9 -1 4 :A c /Z l 1-16:Ac, Z 9 -1 4 :A c/Z 7 -1 2 :A c, or Z 1 1-16:A c/Z 7-12:A c. Various compounds, including Z 1 1-16:Ac and Z7-12:A c, were tried as third chemicals in ad d i­ tion to 100 ng Z 1 1-14: Ac + 100 ng Z 9-14: Ac but none increased trap catches over the basic lure. 
  Reference    Z. Naturforsch. 35c, 990—9 (1980); received August 26 1980 
  Published    1980 
  Keywords    Pheromones, Sex A ttractant, Olfactory Receptors, Alkenyl Acetates, N octuidae 
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 TEI-XML for    default:Reihe_C/35/ZNC-1980-35c-0990.pdf 
 Identifier    ZNC-1980-35c-0990 
 Volume    35 
5Author    Ernst Priesner, Hermann Bogenschütz, Christer LöfstedtRequires cookie*
 Title    Secondary Sex Pheromone Components of Choristoneura murinana Hb. (Lepidoptera: Tortricidae)  
 Abstract    The alkenyl acetates £9-12:Ac, zlll-12:Ac and Zll-14:Ac were identified as minor compo-nents of the C. murinana female pheromone blend by chemical analyses of volatile pheromone gland constituents and potential pheromone precursors, electrophysiological recordings from single receptor cells, and field trapping tests. Gland washes from virgin females contained these compounds at 3%, 10% and 5%. respectively, the amount of the primary pheromone component Z9-12:Ac already reported. A 0.3% addition of either Jll-12:Ac or Zll-14:Ac significantly raised trap captures over Z9-12:Ac alone and a 3-30% addition of either minor component revealed maximum captures, not increased further by including both synergists within the same blend. A functional role of the £9-12: Ac could not be established during this study; 3% of it when combined with the pheromonal ratio mixture of the three other components tended to increase trap captures further whereas in various other mixture combinations the £9-12:Ac strongly reduced captures. These inhibitory effects were more pronounced with attractant blends based on Zll-14:Ac rather than Zlll-12:Ac. Each blend component activated its own type of antennal receptor cell. 
  Reference    Z. Naturforsch. 43c, 918—928 (1988); received August 26. 1988 
  Published    1988 
  Keywords    Sex Pheromone, Attraction Synergist, Alkenyl Acetates, Olfactory Receptors, Choristoneura murinana, Tortricidae 
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 TEI-XML for    default:Reihe_C/43/ZNC-1988-43c-0918.pdf 
 Identifier    ZNC-1988-43c-0918 
 Volume    43