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  • parasitoids  (3)
  • Anti-Pr cold agglutinins  (1)
  • Springer  (4)
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  • Springer  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Anti-Pr cold agglutinins recognize immunodominant α2,3- or α2,6-sialyl groups on glycophorins (1995)
    Springer
    Glycoconjugate journal 12 (1995), S. 714-720 
    Details
    ISSN: 1573-4986
    Keywords: Anti-Pr cold agglutinins ; sialidase ; sialyltransferase
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Anti-Pr cold agglutinins (CAs) with the subspecificities anti-Pr1h,-Pr1d, -Pr2, -Pr3h, -Pr3d, -PrM and anti-Sa CAs recognize immunodominantN-acetylneuraminic acid (NeuN Ac) groups of tetra and/or trisaccharides (O-glycans) of glycophorin. These O-glycans are sialylated in α2,3- and/or α2,6-linkages. Sa and most Pr antigens have been inactivated by α2,3-specific sialidases. Antigenicity was reconstituted on desialylated glycophorin by α2,3-specific Galβ1,3GalN Ac-sialyltransferase indicating that α2,3-linked NeuN Ac groups are the immunodominant components of Sa and most Pr antigens. Some Pr antigens were resistant to α2,3-specific sialidase and were not reconstituted by α2,3-specific Galβ1,3GalN Ac-sialyltransferase, which indicates that α2,6-linked NeuN Ac group represents an immunodominant component of some Pr antigens.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00731269
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  • 2
    Electronic Resource
    Electronic Resource
    Kairomones and their use for management of entomophagous insects: II. Mechanisms causing increase in rate of parasitization byTrichogramma spp. (1975)
    Springer
    Journal of chemical ecology 1 (1975), S. 349-360 
    Details
    ISSN: 1573-1561
    Keywords: Trichogramma achaeae ; Heliothis zea ; biological control ; kairomones ; pest management ; parasitoids ; host finding ; insect behavior ; pheromones ; behavior chemicals
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract When the effect of the kairomone, tricosane, on parasitization byTrichogramma achaeae Nagaraja and Nagarkatti of eggs ofHeliothis zea (Boddie) was studied in petri dish tests, the greatest percentage parasitization ( $$\mathop X\limits^\_$$ = 64%) was obtained if the entire filter paper was treated. Treatment of smaller areas (about the eggs) resulted in decreased parasitism. In the greenhouse, highest parasitization ( $$\mathop X\limits^\_$$ = 71%) byT. pretiosum (Riley) ofH. zea eggs placed on pea seedlings grown in pie pans was obtained if the whole pan was treated; lowest parasitism ( $$\mathop X\limits^\_$$ = 29%) occurred when the pans were untreated. Parasitization was intermediate ( $$\mathop X\limits^\_$$ = 52%) in other pans treated only at selected spots. Dissections ofH. zea eggs collected from kairomonetreated and untreated field plots revealed that eggs ofTrichogramma spp. were more efficiently distributed (less superparasitism) among host eggs in treated plots. These kairomones increase parasitization ofTrichogramma spp. by releasing and continuously reinforcing an intensified searching behavior rather than by attracting and guiding the parasite directly to the host.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00988837
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  • 3
    Electronic Resource
    Electronic Resource
    Kairomones and their use for management of entomophagous insects (1979)
    Springer
    Journal of chemical ecology 5 (1979), S. 673-680 
    Details
    ISSN: 1573-1561
    Keywords: Trichogramma ; Hymenoptera ; Trichogrammatidae ; kairomone ; Heliothis zea ; biological control ; pest management ; parasitoids
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract A kairomone from adultHeliothis zea (Boddie) scales is an important factor in the host selection process ofTrichogrammapretiosum Riley. If the host density is sufficiently high (i.e., 1 egg/500 cm2) and higher), a complete coverage or solid treatment of kairomone spray may be the optimum for increasing parasitization rates, but this is not the case at lower host densities (e.g., 1 egg/2000 cm2). At the lower densities, the kairomone must be distributed in such a way as to retain the parasitoids in the target area without inhibiting their movement from one ovi-position site to the next. Simulated moth scale particles appear to fill this need since their density can be regulated to provide the optimum frequency of parasitoid stimulation and thus maximum rates of parasitization at prevailing host densities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00986552
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  • 4
    Electronic Resource
    Electronic Resource
    Kairomones and their use for management of entomophagous insects: X. Laboratory studies on manipulation of host-finding behavior ofTrichogramma pretiosum riley1 with a kairomone extracted fromHeliothis zea (boddie) moth scales (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 635-648 
    Details
    ISSN: 1573-1561
    Keywords: Kairomone ; parasitoids ; biological control ; Trichogramma pretiosum ; Hymenoptera ; Trichogramma tidae ; Heliothis zea ; Lepidoptera ; Noeturidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract The behavioral response ofTrichogramma pretiosum Riley females to the kairomone found inHeliothis zea (Boddie) moth scales is examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00987711
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