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  • 1985-1989  (6)
  • 1988  (4)
  • 1986  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Bionomics of the Variegated Grasshopper (Zonocerus Variegatus) in West and Central Africa (1986)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 31 (1986), S. 479-505 
    Details
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.en.31.010186.002403
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 2
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    Unknown
    There Is Something to Be Said (1988)
    Washington, etc. : Periodicals Archive Online (PAO)
    Poet lore. 83:3 (1988:Fall) 26 
    Details
    ISSN: 0032-1966
    Topics: English, American Studies
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:3208-1988-083-03-000014
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The cost of complexity (1988)
    [s.l.] : Nature Publishing Group
    Nature 335 (1988), S. 21-22 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] DURING the nineteenth century, the discovery and study of 'lost civilizations' gave great impetus to the development of archaeology. The surviving traces of such civilizations - whether in the Mycenaean and Minoan palaces of the Aegean, the frontier defences of the Roman Empire, the pyramids of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/335021a0
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Use of the64Ni(36S,34,35Si)66,65Zn reactions to measure the masses of34Si and35Si (1986)
    Springer
    The European physical journal 324 (1986), S. 283-287 
    Details
    ISSN: 1434-601X
    Keywords: 21.10.Dr ; 25.70.Cd ; 27.30.+t
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The ground-state masses of35Si and34Si have been measured using the reactions64Ni(36S,35,34Si)65,66Zn at a36S beam energy of 198 MeV.34,35Si14+ ions were analysed and identified in a QMG/2 magnetic spectrometer and gas-filled focal-plane detector. The experimental mass excess of35Si was determined to be −14.58± 0.12 0.07 MeV while that of34Si was measured as −19.961±0.034 MeV. A comparison is made with the results of mass model predictions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01294581
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Pesticide-induced mite outbreaks: pyrethroids and spider mites (1988)
    Springer
    Experimental and applied acarology 4 (1988), S. 265-276 
    Details
    ISSN: 1572-9702
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Factors inducing outbreaks of spider mites (Acari: Tetranychidae) following use of pyrethroid insecticides are reviewed. Differentials in direct toxicity between spider mites and phytoseiid (Acari: Phytoseiidae) predators provide one explanation. Wide variation exists between pyrethroids in their direct toxicity toTetranychus urticae. The acaricidal action of pyrethroids is largely controlled by the amount of irritancy or repellency induced by the respective chemicals. Laboratory assays for repellency reflect field results. Repellent activity induces spider-mite dispersal to either recolonise plants free of residues or leave the treated habitat. Pyrethroids may also affect reproduction and development rates. Residual activity is likely to vary, so limiting any general theory of spider-mite responses to pyrethroids. Variable responses to pyrethroids, strain variation and development of behavioural resistance also add complications to understanding outbreaks. Future research needs are identified.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01196190
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    Chemical aspects of host-plant specificity in threeLarrea-feeding grasshoppers (1988)
    Springer
    Journal of chemical ecology 14 (1988), S. 561-579 
    Details
    ISSN: 1573-1561
    Keywords: Creosote bush ; Larrea ; nordihydroguaiaretic acid ; grasshoppers ; monophagy ; Bootettix ; Ligurotettix ; Cibolacris ; Orthoptera ; Acrididae ; host selection ; feeding deterrence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The host-selection behavior of three species of grasshopper feeding on creosote bush,Larrea tridentata, in southern California was investigated. The species wereBootettix argentatus, which is monophagous;Ligurotettix coquilletti, oligophagous; andCibolacris parviceps, polyphagous. The monophagous species is stimulated to bite by nordihydroguaiaretic acid (NDGA), a compound that is characteristic of the host plant and that may comprise up to 10% of the dry weight of the leaf. Host specificity ofB. argentatus is enhanced by deterrent responses to compounds present in the surface waxes of all non-host-plant species. Both the oligophagous and polyphagous species are deterred by NDGA at naturally occurring concentrations. Their association withLarrea is probably based on tolerance of the plant chemicals rather than on dependence on specific chemicals. Factors other than the chemistry of the plant probably also contribute to the specificity ofB. argentatus andL. coquilletti.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01013907
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