| 2. |
- Mozuraitis, Raimondas, et al.
(författare)
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Chemocommunication in Phyllonorycter ulmifoliella (HBN.) (Lepidoptera: Gracillariidae) : Periodicity, Sex Pheromone, and Inhibitors
- 1997
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Ingår i: Journal of Chemical Ecology. - 0098-0331 .- 1573-1561. ; 23:1, s. 175-189
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Tidskriftsartikel (refereegranskat)abstract
- (Z)-10-Tetradecenyl acetate (Z10-14:OAc) from abdominal tip extracts of virgin females of the tentiform leafminer moth Phyllonorycter ulmifoliella (Lepidoptera: Gracillariidae) was identified by gas chromatography and mass spectrometry. The biological activity of the component was confirmed by field tests with synthetic compounds. As a sex pheromone component this ester is novel both in the family Gracillariidae and in the superfamily Gracillarioidea. Field trapping of P. ulmifoliella with synthetic Z10-14:OAc at dosages of 1 and 0.2 mg/dispenser led to catches of approximately 9000 and 3000 male moths, respectively. The attractivity of the Z10-14:OAc was strongly inhibited by a 10% admixture of either (Z)-9-tetradecenyl acetate (Z9-14:OAc), (E)-9-tetradecenyl acetate (E9-14:OAc), or (E)-11-tetradecenyl acetate (E11-14:OAc). Addition of 10% (E)-10-tetradecenyl acetate (E10-14:OAc) to the sex pheromone reduced attractivity, but significantly less than the inhibitors previously mentioned. The pheromone releasing (or ‘’calling”) behavior of virgin P. ulmifoliella females was recorded under laboratory conditions. Calling activity started about half an hour before lights-on and the maximum number of calling females was registered half an hour after the start of photophase. A high level of pheromone releasing activity lasted for about 2 hr and ceased about 5 hr after the start of photophase. Chemocommunication activity in the light period of day is assumed to be an adaptation which allows this phyllonoryctid to avoid inhibitors emitted as pheromones by many other species. A scheme of probable interactions by means of semiochemicals between P. ulmifoliella and other lepidopterans is presented and the appearance of Z10-14:OAc as a sex pheromone component in Lepidoptera during evolution of the order is discussed.
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| 3. |
- Mozuraitis, Raimondas, et al.
(författare)
-
New sex attractants and inhibitors for 17 moth species from the families Gracillariidae, Tortricidae, Yponomeutidae, Oecophoridae, Pyralidae and Gelechiidae
- 1998
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Ingår i: Journal of applied entomology. - : Wiley. - 0931-2048 .- 1439-0418. ; 122:8, s. 441-452
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Tidskriftsartikel (refereegranskat)abstract
- Field screening tests of 21 saturated and monounsaturated straight chain C-12 and C-14 alcohols and their acetates as well as some binary mixtures in dosages of 1 and 0.2 mg/dispenser were carried out in Lithuanian in 1993 and 1994. New sex attractants were determined for males of five moth species of the family Gracillariidae (E10-12:OH for Phyllonorycter soi bi, E10-12Ac for Ph. cydoniella and Ph. oxyacanthae, Z10-12:OAc for Ph. junoniella, and a mixture of Z10-14:OAc with E9-14:OAc in a 1:10 for Pit. sylvella), for four species of the family Tortricidae (E10-14:OAc for Endothenia ericetana, Z10-14:OAc in a 10:1 mixture with E11-14:OAc for Eudemis pozphyrana, E11-14:OAc in a 10:1 mixture with E11-14:OH for Dichrorampha petiverella and Cochylis dubitana), for two species of Gelechiidae (Z9-14:OAc in a mixture with either Z10-14:OAc in a ratio 1:1, E9-14:OAc in a ratio 1:10 or E10-14:OAc in a ratio 10:1 for Bryotropha galbanella, Z10-14:OAc and E9-14:OAc in a ratio 10:1 for B. mundella), as well as for one species of each of the families Yponomeutidae (Z7-14:OAc for Paraswammerdamia lutarea) and Oecophoridae (Z10-14:OAc and E9-14:OAc in a ratio 10:1 for Pseudatemelia josephinae). Preliminary composition of sex attractants was established for three moth species of the family Gracillariidae (Z10-14:OAc in a 1.10 mixture with E9-14:OAc for Phyllonorycter heegerella, Ph. coryli and Ph. dubitella) and for one species of the family Gelechiidae (Z9-14:OAc for Bryotropha terella). Inhibitors of the sex attractants were found for four leafminer species of the family Gracillariidae (Z7-, Z9- and Z10-12:OAc for Phyllonorycter sorbi, Z10-, E10-12:OH and E10-14:OH for Ph. mespilella, E10-12:OH for Ph. cydoniella, Z10-12:OH and E10-14:OH for Ph. oxyacanthae), for three species of Tortricidae (E9-, Z11- and E11-14:OAc for Endothenia ericetana, E11-14:OAc for Gypsonoma minutana, E10- and E11-14:OAc for Epagoge grotiana), and for one species from the family Pyralidae (Z10-, E10- and E11-14:OAc for Pyrausta aurata). Data from male behaviour tests in tube olfactometers are presented for Phyllonorycter blancardella, Ph. sorbi, Ph. dubitella and Ph. strigulatella and active compounds revealed.
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| 4. |
- Mozuraitis, Raimondas, et al.
(författare)
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Sex pheromone of the spotted tentiform leafminer moth Phyllonorycter blancardella (Fabr.) (Lep., Gracillariidae)
- 1999
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Ingår i: Journal of applied entomology. - : Wiley. - 0931-2048 .- 1439-0418. ; 123:10, s. 603-606
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Tidskriftsartikel (refereegranskat)abstract
- Dodecyl acetate (12:OAc) (E)-10-dodecenyl acetate (E10-12:OAc) and (E)-10-dodecenol (E10-12:OH) in the ratio 8:80:12 were collected by solid phase micro-extraction of the volatiles emitted by virgin signalling females of the spotted tentiform leafminer moth, Phyllonorycter blancardella. The same compounds in the ratio 8:79:13 were extracted from the sex pheromone glands of virgin signalling females of the same species. The chemical structures of the compounds were identified by gas chromatography and mass spectrometry. Trapping results obtained from field tests using synthetic components of the sex pheromone demonstrated that only one component, E10-12:OAc, was essential for the attraction of conspecific males and should be considered as a sex pheromone.
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