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  • 1
    ISSN: 1573-1561
    Schlagwort(e): Pine sawflies ; Neodiprion spp. ; Hymenoptera ; Diprionidae ; electroantennogram ; sex pheromone ; isomers ; jack pine ; Pinus banksiana ; diprionol ; 3,7-dimethylpentadecan-2-ol ; acetate ; propionate
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Several species of monophagous jack pine sawflies (Hymenoptera: Diprionidae) were tested in the field and by electroantennograms (EAG) for activity toward the optical isomers of a pine sawfly sex pheromone, the acetate and propionate esters of 3,7-dimethylpentadecan-2-ol.Neodiprion rugifrons andNeodiprion dubiosus were attracted to a mixture of the propionate esters of the 2S,3R,7R and 2S,3R,7S isomers, whereasNeodiprion swainei was attracted to the 2S,3S,7S propionate isomer. Samples containing the 2S,3R,7S propionate isomer elicited the strongest EAG responses in these three species andNeodiprion nigroscutum. The 2S,3S,7S propionate isomer was equally active (EAG) in the case ofN. swainei.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    ISSN: 1573-1561
    Schlagwort(e): Synthetic attractant ; introduced pine sawfly ; chiral specificity ; Diprion similis ; Gilpinia frutetorum ; esters ; 2S,3S,7S-3,7-dimethylpenta-decan-2-ol acetate and propionate ; Hymenoptera ; Diprionidae
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Field attractiveness of synthetic attractants toward males of two introduced species of sawflies was examined. It was first established that the esters of 2S,3S,7S-3, 7-dimethylpentadecan-2-ol (diprionol), which have been active toward males of manyNeodiprion species, were inactive toward males ofDiprion similis andGilpinia frutetorum, To determine the chiral combination of the alcohol moiety, four different isomers, each containing specific chirally defined carbons, were synthesized. As a result it was concluded that the most active chiral arrangement of diprionol for these species is 2S, 3R, 7R.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1573-1561
    Schlagwort(e): Neodiprion lecontei ; Hymenoptera ; Diprionidae ; 3,7-di-methylpentadecan-2-ol acetate ; trapping ; pheromone ; time of year ; time of day
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Chemie und Pharmazie
    Notizen: Abstract Field tests using the sawfly pheromone [3,7-dimethylpentadecan-2-ol acetate with (−)-erythro configuration (2S,3S)] were conducted near Gainesville, Florida, during 1978–1981 to determine the attraction ofNeodiprion lecontei males to baited traps with respect to time of year and time of day. Greatest numbers of males were caught during May, July, and September in traps placed within a pine stand from July 1978 to July 1979. Males were only caught between 1400 and 2000 hr on 10 dates in June and 10 dates in September–October 1980, and 10 dates in June 1981, with greatest catches from 1600–1800 hr. Catches in a synthetic-baited trap and in virgin female-baited traps were similar with respect to time of day.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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