Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    ISSN: 1570-7458
    Keywords: Plant-insect interaction ; oviposition stimulant ; glucosinolate ; host-plant recognition ; diamondback moth ; Plutella xylostella ; Cruciferae ; Brassicaceae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Les produits chimiques trouvés dans trois espèces de crucifères cultivées, Brassica napus L., B. juncea (L.) Czerniak, et Sinapis alba L., qui stimulent l'oviposition chez la teigne des crucifères, Plutella xylostella (L.) (Lepidoptera: Plutellidae) ont été examinés. La partie aérienne des plants agés de 4 à 6 semaines a été extraite avec le methanol bouillant à 80%, le methanol pur, et l'éther. La concentration par filtration sur célite a donné comme resultat un ‘extrait aqueux’. Le materiel restant sur la célite a été dissout avec hexane pour donner un ‘extrait lipophillique’. L'extrait aqueux a été fractionné à l'aide de la chromatographie liquide sur échangeur d'ion pour donner trois fractions: neutre, cationique, et anionique. Les extraits et les fractions ont été ajustés à 1 g poids frais de tissu de plant par ml, appliqués sur du papier filtre, et exposés aux papillons femelles dans les essais de choix d'oviposition. L'oviposition a été stimulée fortement en présence de l'extrait aqueux, la fraction anionique, et quelque sous-fractions anioniques. Plus tard, il a été déterminé que ces derniers contenaient des glucosinolates. Chez les trois espèces de crucifères, les stimulants d'oviposition ont été identifiés comme étant des glucosinolates, que l'on retrouve dans toutes les espèces de crucifères. L'activité des extraits a été éliminée en grande partie par traitement avec myrosinase ou sulphatase, des enzymes qui dégradent spécifiquement les glucosinolates. Des standards de references des mêmes glucosinolates et aux même concentrations que dans les extraits ont eu également un effet stimulant. Un essai avec huit glucosinolates differentes à une concentration de 50 μg/ml appliquées sur du papier filter à 3.2 μg/cm2 a démontré que les papillons ne discriminent pas entre les glucosinolates possédant des chaines secondaires differentes. Par contre, dans les essais utilisant l'allylglucosinolate, la réponse d'oviposition a été dépendente de la dose. S. alba a semblé contenir un inhibiteur de l'oviposition, qui est retrouvé dans l'extrait aqueux mais non pas dans la fraction anionique.
    Notes: Abstract Plant chemicals in three cruciferous crop species, Brassica napus L., B. juncea (L.) Czerniak, and Sinapis alba L., that stimulate oviposition in the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) were investigated in laboratory bioassays. Aerial portions of 4- to 6-week-old plants were extracted and fractionated using ion-exchange liquid chromatography. The oviposition stimulants were identified as glucosinolates, which are found in all Brassicaceae species. Activity of extracts was largely eliminated by treatment with myrosinase or sulphatase, enzymes which degrade glucosinolates. Reference standards of the same glucosinolates and in the same concentrations as in the extracts were equally stimulatory. A test with eight different glucosinolates demonstrated that the moths do not discriminate between glucosinolates with different side-chain structures. However, in tests using allylglucosinolate the oviposition response was dose-dependent. One of the species tested, S. alba, contained a possible oviposition deterrent.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1573-1561
    Keywords: Lepidoptera ; Noctuidae ; Oncocnemis chandleri ; Oncocnemis cibalis ; Oncocnemis mackiei ; (5E7Z)-5 ; 7-dodecadienyl acetate ; (Z)-7-dodecenyl acetate ; sex attractant
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Oncocnemis chandleri, O. cibalis, andO. mackiei were attracted to chemically baited traps in the field. In all three cases, (5E,7Z)-dodecadienyl acetate was a key component for attraction. Attraction ofO. chandleri to traps baited with the (5E,7Z)-dodecadienyl acetate was inhibited by addition of (Z)-7-dodecenyl acetate.O. cibalis required both (5E,7Z)-dodecadienyl acetate and (Z)-7-dodecenyl acetate for attraction. Electroantennogram responses for the three species are also reported.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 3
    ISSN: 1573-1561
    Keywords: Lepidoptera ; Geometridae ; Operophtera bruceata (Hulst) ; Bruce spanworm ; Operophetra brumata L. ; winter moth ; sex pheromone ; (Z,Z,Z)-1,3,6,9-nonadecatetraene ; inhibitor ; (E,Z,Z)-1,3,6,9-nonadecatetraene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A single sex pherormone component was isolated from abdominal tip extracts of female Bruce spanworm.Operophtera bruceata (Hulst). This was identified as (Z,Z,Z)-1,3,6,9-nonadecatetraene by capillary gas chromatography (GC), electroantennography, and mass spectrometry. In addition, hexane extracts of female abdominal tips from Bruce spanworm and the winter moth.O. brumata L., were analyzed by GC coupled to an electroantennographic detector (GC-EAD). The extracts ofO. bruceata andO. brumata females elicited only a single response, at the same retention time, from antennae of their conspecific and reciprocal males. In field tests conducted in Saskatchewan, traps baited with the synthetic tetraene captured Bruce spanworm males. In tests carried out on Vancouver Island, British Columbia, where the two species coexist, both Bruce spanworm and winter moth males were captured. The attractancy of lures containing the synthetic pheromone alone and in combination with several structurally related analogs was field tested at both locations. One of these, an isomer of the natural pheromone, (E,Z,Z)-1,3,6,9-nonadecatetraene, inhibited the capture of Bruce spanworm males but had no effect upon the number of winter moth males which were taken. Thus, populations of these two very similar species can be distinguished by employing traps baited with pheromone ± the inhibitor. Coneorifice Hara traps were found useful for field trapping males of both species.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1573-1561
    Keywords: (Z,Z)-7,9-Dodecadienyl acetate ; pheromone ; sex attractant ; attraction inhibitors ; olfactory receptors ; Epinotia tedella ; Epinotia spp. ; Tortricidae ; Lepidoptera
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract (Z,Z)-7,9-dodecadienyl acetate, a reported male attractant for several New World spp. ofEpinotia, was identified as the primary pheromone of femaleE. tedella (European spruce budmoth) through chemical analysis of pheromone gland washes, the electrophysiological study of male antennal receptor types, and field-trapping tests. The washes contained this compound at a level of approximately 0.4 ng per FE, along with a similar amount of the corresponding alcohol, (Z,Z)-7,9-dodecadien-1-ol. Each compound activated its own specialized type of male receptor cell. No traces of stereoisomers or monoenes were found in the washes. In field-trapping tests conducted in stands of Norway spruce in southern Germany, (Z,Z)-7,9-do-decadienyl acetate as a single chemical proved highly attractive to maleE. tedella over a range of lure doses. The corresponding alcohol or aldehyde did not show attractivity; rather, in binary combinations with the primary pheromone, these compounds, and also the (E,Z)-7,9 stereoisomeric acetate, reduced captures. A 10∶1 blend of (E)-9- and (Z)-9-dodecenyl acetates, reported as anE. tedella male attractant, did not reveal significant captures. No otherEpinotia spp. besidesE. tedella responded to the various 7,9-do-decadienyl test baits during this study.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 5
    ISSN: 1573-1561
    Keywords: Sex pheromone ; Cydia toreuta ; Lepidoptera ; Tortricidae ; Olethreutinae ; (E,Z)-8,10-dodecadienyl acetate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The sex pheromone ofCydia toreuta (Grote), the eastern pine seedworm, was investigated using electroantennogram (AG) measurements, gas chromatography (combined GC-FID-EAD) measurements, and field tests. (E,Z)-8,10-dodecadienyl acetate (E,Z8,10-12:Ac) and (E,E)-8,10-dodecadienyl actetate (E,E8,10-12: Ac) produced both the highest EAG and EAD responses. Only a single antennal stimulatory peak was observed when female abdominal tip extracts were analyzed by GC-FID-EAD, which corresponded exactly with that of authenticE,Z8,10-12: Ac. Field tests confirmedE,Z8,10-12: Ac as the major pheromone component. TheE,Z isomer by itself caught equivalent numbers of male moths as did caged females. The addition of theE,E isomer to theE,Z form increased trap catch, although not significantly (P = 0.05). The addition of (Z,Z)-8,10-dodecadienyl acetate to theE,Z isomer significantly (P=0.05) reduced trap catch, while the addition of (Z,E)-8,10-dodecadienyl acetate to theE,Z form also decreased trap catch, but not significantly (P=0.05).
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1573-1561
    Keywords: Sex attractant ; pheromone ; enantiomer ; Lepidoptera ; Noctuidae ; Geometridae ; Euchlaena madusaria ; Xanthotype sospeta ; Palthis angulalis ; Anacamptodes humaria ; (Z,Z)-6,9-nonadecadiene ; (Z)- 6- cis- 9,10-epoxynonadecene ; (Z)-9-cis-6,7-epoxynonadecene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Enantiomerically enriched forms of (Z)-6-cis-9,10-epoxymonoenes and (Z)-9-cis-6,7-epoxymonoenes of chain lengths C17−20 were synthesized by Sharpless asymmetric epoxidation of allylic alcohol intermediates, followed by tosylation or halogenation and chain extension. The resulting monounsaturated epoxides were field tested as sex attractants for lepidopteran species.Euchlaena madusaria Walker males were attracted to blends of the enantiomers of (Z)-6- cis- 9,10-epoxynonadecene 6Z-cis-9,10-epoxy-19:H; IUPAC name [2α,3α(Z)]-2-pentyl-3-(2-dodecenyI)oxirane in combination with 6Z,9Z-19: H. The response was antagonized by 9Z-cis-6,7-epoxy-19: H. 6Z,9Z-19: H was tentatively identified in pheromone gland extracts.Xanthotype sospeta Drury male moths were attracted to lures containing 6Z-9S,10R-epoxy-19: H; the response was antagonized by the opposite enantiomer.Pal-this angulalis Hübner males were attracted to 9Z-6S,7R-epoxy-19:H; the opposite enantiomer was antagonistic. 6Z,9Z-19:H and 9Z-cis-6,7-epoxy-19:H and 9Z-cis-6,7-epoxy-19:H were tentatively identified in pheromone gland extracts fromAnacamptodes humaria Guenée females. In field trails, 9Z-6R,7S-epoxy-19:H proved to be the attractive enantiomer, and the response was potentiated by 6Z,9Z-19:H. Mechanisms by which unique chemical communication channels are maintained by each species are discussed.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 7
    ISSN: 1573-1561
    Keywords: Lepidoptera ; Geometridae ; sex pheromone ; sex attractant ; behavioral antagonist ; enantiomer ; (6Z,9Z,3S,4R)-epoxy-heptadecadiene ; (6Z,9Z,3R,4S)-epoxy-heptadecadiene ; (3Z,9Z,6S,7R)-epoxyheptadecadiene ; (6Z,9Z,3S,4R)-epoxy-nonadecadiene ; (6Z,9Z,3R,4S)-epoxy-nonadecadiene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Stereoselective syntheses of chiral C17 to C21 6Z,9Z-cis-3,4-epoxydienes were developed. Field tests of the enantiomerically enriched epoxides as components of synthetic sex attractant lures were carried out, and those with C17 and C19 chain lengths, particularly, were attractive to male moths of several species. Moths were usually specifically attracted by one of a pair of enantiomers, and the opposite enantiomer could actually be a behavioral antagonist. Males belonging to nine species of Geometridae were captured.Probole amicaria (Herrich-Schäffer) males were taken in traps baited with the mixture (6Z,9Z,3S,4R)-epoxy-nonadecadiene (6Z,9Z,3S,4R-epoxy-19∶H) + 3Z,9Z,6R,7S-epoxy-19∶H + 3Z,6Z,9Z-19∶H(9∶1∶8). Other species responding to the C19 compounds included (attractant components follow in parentheses);Sicya macularia (Harris) (6Z,9Z,3S,4R-epoxy-19∶H + 3Z,6Z,9Z-19∶H),Anavitrinella pampinaria (Guenée) (6Z,9Z-cis-3,4-epoxy-19∶H + 3Z,9Z,6S,7R-epoxy-19∶H), andLycia ursaria (Walker) (6Z,9Z-3S, 4R-epoxy-19∶H + 3Z,6Z,9Z-19∶H). Males of the following species were captured byC 17 epoxides:Itame occiduaria (Packard) (6Z,9Z,3R,4S-epoxy-17∶H + 3Z,6Z,9Z-17∶H),Itame brunneata (Thunberg) (6Z,9Z,3S,4R-epoxy-17∶H),Epelis truncataria (Walker) (both enantiomers of 6Z,9Z-cis-3,4-epoxy-17∶H),Semiothisa ulsterata (Pearsall) (3Z,9Z-6S,7R-epoxy-17∶H), andS. signaria dispuncta (Walker) (3Z,9Z-cis-6,7-epoxy-17∶H + 3Z,6Z,9Z-17∶H). The interactions among enantiomers and regioisomers are discussed as a mechanism by which cross attraction between sympatric species is limited.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 8
    ISSN: 1573-1561
    Keywords: Pheromone ; attractant ; 6(Z),9(Z)-nonadecadiene ; 3(Z),6(Z),9(Z)-nonadecatriene ; 3(Z),6(Z),9(Z)-eicosatriene ; 6(Z),9(Z)-cis-3 ; 4-epoxynonadecadiene ; Paleacrita vernata ; spring cankerworm ; Lepidoptera ; Geometridae ; trap height ; behavioral antagonist
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Two sex pheromone components, 3(Z),6(Z),9(Z)-nonadecatriene (3Z,6Z,9Z-19 ∶ H), and 3(Z),6(Z),9(Z)-eicosatriene (3Z,6Z,9Z-20∶ H), have been positively identified, and a third component, 6(Z),9(Z)-nonadecadiene (6(Z),9(Z)-19 ∶ H) has been tentatively identified from abdominal tip extracts of female spring cankerworm moths,Paleacrita vernata Peck (Lepidoptera∶ Geometridae). The pheromone components were identified by a combination of gas chromatography, electroantennography, mass spectrometry, chemical tests, comparison with standards, and field testing. Only 3Z,6Z,9Z-20 ∶ H exhibited significant attractant activity when tested alone, and it was potentiated by the other two components. The attractive blend was an 8∶2∶1 ratio of 3Z,6Z,9Z-20∶H/3Z,6Z,9Z-19∶H/6Z,9Z-19∶H. However, the two-component blend of 3Z,6Z,9Z-20 ∶ H and 6Z,9Z-19 ∶ H (8∶1 ratio) was as attractive as the three-component blend in further field tests. A series of related compounds, the diene monoepoxides available from epoxidation of C19 and C20 3Z,6Z,9Z-trienes, some of which have been found in the pheromone blends of other moth species, were tested as behavioral antagonists. The attraction of male moths to synthetic lures was suppressed by the addition of 6Z,9Z-cis-3,4-epoxy-nonadecadiene to the lures. Additional experiments were performed to determine the effects of lure dosage, trap height, and trap design on the numbers of male moths captured.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 9
    ISSN: 1573-1561
    Keywords: Pheromone ; sex attractant ; Noctuidae ; Geometridae ; epoxide
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Pheromone components and sex attractant blends consisting of 3Z,6Z,9Z-triene hydrocarbons and racemic and chiral forms of3Z,6Z-cis-9, 10-epoxydienes have been elucidated for two noctuid and one geometrid moth species. MaleEuclidea cuspidea moths were attracted to blends of 3Z,6Z,9Z-heneicosatriene (3Z,6Z,9Z-21∶H) with 3Z,6Z-cis-9,10-epoxyheneicosadiene (3Z,6Z-cis-9,10-epoxy-21∶H). In addition to these compounds, 3Z,6Z,9Z-20∶H, and two regioisomeric C21 epoxides were tentatively identified in pheromone gland extracts.Caenurgina distincta moths were attracted by an 8∶∶1 blend of 3Z,6Z,9Z-20∶H with3Z,6Z-cis- 9,10-epoxy-20∶H.Eupithecia annulata moths were attracted by either 3Z,6Z-cis-9,10-epoxy-20∶H or 3Z,6Z-cis-9,10-epoxy-21∶H, and by the 95,10R enantiomer of each epoxide. 3Z,6Z,9Z-21∶H and 3Z,6Z-cis-9,10-epoxy-21∶H were tentatively identified from pheromone glands. Pheromone components were identified by a combination of coupled gas chromatography-electroantennography, gas chromatography-mass spectrometry, and field bioassays.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 1573-1561
    Keywords: Sex attractant ; pheromone ; 3Z,6Z,9Z-octadecatriene ; 3Z,6Z,9Z-nonadecatriene ; 3Z,6Z,9Z-heneicosatriene ; 6Z,9Z-nonadecadiene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract 3Z,6Z,9Z-Nonadecatriene (3Z,6Z,9Z-19:H; other abbreviations follow the same pattern) has been identified as a female sex pheromone component of the geometrid mothEpirrhoe sperryi (H.). 3Z,6Z,9Z-18:H and 6Z,9Z-19:H were also identified in pheromone gland extracts but had no apparent biological activity. 3Z,6Z,9Z-21:H was tentatively identified as a female sex pheromone component of a second geometrid species,Lobophora nivigerata (Wlk.). Attraction of male moths to this compound was strongly synergized by the addition of small amounts of 6Z,9Z-21:H to lures.
    Type of Medium: Electronic Resource
    Signatur Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...