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  • 1
    Electronic Resource
    Electronic Resource
    Sex pheromone activity in a single component of tergal gland extract ofLutzomyia longipalpis (Diptera: Psychodidae) from Jacobina, Northeastern Brazil (1994)
    Springer
    Journal of chemical ecology 20 (1994), S. 141-151 
    Details
    ISSN: 1573-1561
    Keywords: sex pheromone ; tergal gland ; Lutzomyia longipalpis ; Diptera ; Psychodidae ; gas chromatography ; high-pressure liquid chromatography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The sex pheromone component of maleLutzomyia longipalpis tergal gland extract was isolated and its activity confirmed by bioassay. Whole tergal gland extract was analyzed by HPLC and fractions were collected as they eluted from the detector. Each fraction was tested in an attraction bioassay with virgin unfed femaleLutzomyia longipalpis. HPLC analysis showed that whole extract contained several peaks; one large peak, one small peak and several minor peaks. Purity of the HPLC fractions was determined by GC analysis. The bioassays revealed that the large peak was responsible for most of the observed female behavior. The addition of the small peak to the large peak improved the response although by itself the small peak failed to elicit any significant behavior. Minor peaks failed to elicit any response. Chemical analysis revealed the large peak to be a relatively nonpolar hydrocarbon.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02065997
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  • 2
    Electronic Resource
    Electronic Resource
    Multichemical defense of plant bugHotea gambiae (Westwood) (Heteroptera: Scutelleridae): (E)-2-hexenol from abdominal gland in adults (1985)
    Springer
    Journal of chemical ecology 11 (1985), S. 1399-1409 
    Details
    ISSN: 1573-1561
    Keywords: Scent gland ; defensive secretion ; Hotea gambiae ; Heteroptera ; Scutelleridae ; (E)-2-hexenol ; hex-2-enal ; oct-2-enal ; 4-oxohex-2-enal ; β-pinene ; limonene ; sex dimorphism ; feeding ; repellent ; pheromone ; ovicide ; Calliphora ; Diptera ; Calliphoridae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The occurrence inHotea gambia adults of a sexual dimorphism in the divided dorsal abdominal scent gland (dg 1)is reported. Counts made of ducted secretory units indicate that female dg 1 regresses at the end of larval development, unlike male dg 1 which undergoes no regression. Other dorsal abdominal scent glands (dg 2, dg 3) which function in the larvae cease to function during the imaginai moult. From gas chromatographic, mass spectrometric and [1H]NMR data, the identity of the secretion from male adult dg 1 was established as virtually pure (E)-2-hexenol (a 100-mg mature male adult contains 0.5–1 μl of secretion). 2-Hexenol was also found in the reduced female adult dg 1. In the sexually monomorphic metathoracic scent gland, (E)-2-alkenals (C6, C8) and (E)-4-oxohex-2-enal, together with monoterpenes (β-pinene, limonene) but not 2-hexenol, were identified. The vapor of (E)-2-hexenol is repellent to both sexes ofHotea adults and toxic to blowfly (Calliphora) eggs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01012140
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    Paper (German National Licenses)
    Fulltext
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