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1

Digitale Medien

Kairomones and their use for management of entomophagous insects (1979)

Lewis, W. Joe ; Beevers, M. ; Nordlund, Donald A. ; [weitere]

Springer

Journal of chemical ecology 5 (1979), S. 673-680

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ISSN: 1573-1561

Schlagwort(e): Trichogramma ; Hymenoptera ; Trichogrammatidae ; kairomone ; Heliothis zea ; biological control ; pest management ; parasitoids

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: 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.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00986552

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2

Digitale Medien

Kairomones and their use for management of entomophagous insects (1981)

Nordlund, Donald A. ; Lewis, W. J. ; Gross, H. R. ; [weitere]

Springer

Journal of chemical ecology 7 (1981), S. 909-917

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ISSN: 1573-1561

Schlagwort(e): Trichogramma pretiosum ; Hymenoptera ; Trichogrammatidae ; biological control ; kairomone ; Heliothis zea ; Lepidoptera ; Noctuidae ; host density

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: Abstract Trichogramma pretiosum Riley females exhibit success-motivated searching after oviposition. The stimulatory effect of contact with host eggs makes host-egg density an important factor in determining the appropriate strategy for behavioral manipulation, using kairomones, that simulate host seeking, in biological control programs. Host eggs can be used, in conjunction with kairomones or by themselves, to improve the performance of these important beneficial insects.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00987616

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3

Digitale Medien

Kairomones and their use for management of entomophagous insects: II. Mechanisms causing increase in rate of parasitization byTrichogramma spp. (1975)

Lewis, W. J. ; Jones, Richard L. ; Nordlund, Donald A. ; [weitere]

Springer

Journal of chemical ecology 1 (1975), S. 349-360

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ISSN: 1573-1561

Schlagwort(e): Trichogramma achaeae ; Heliothis zea ; biological control ; kairomones ; pest management ; parasitoids ; host finding ; insect behavior ; pheromones ; behavior chemicals

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: 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.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00988837

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4

Digitale Medien

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)

Beevers, M. ; Lewis, W. Joe ; Gross, H. R. ; [weitere]

Springer

Journal of chemical ecology 7 (1981), S. 635-648

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ISSN: 1573-1561

Schlagwort(e): Kairomone ; parasitoids ; biological control ; Trichogramma pretiosum ; Hymenoptera ; Trichogramma tidae ; Heliothis zea ; Lepidoptera ; Noeturidae

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: Abstract The behavioral response ofTrichogramma pretiosum Riley females to the kairomone found inHeliothis zea (Boddie) moth scales is examined.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00987711

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5

Digitale Medien

Kairomones and their use for management of entomophagous insects: III. Stimulation ofTrichogramma achaeae,T. pretiosum, andMicroplitis croceipes with host-seeking stimuli at time of release to improve their efficiency (1975)

Gross, H. R. ; Lewis, W. J. ; Jones, Richard L. ; [weitere]

Springer

Journal of chemical ecology 1 (1975), S. 431-438

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ISSN: 1573-1561

Schlagwort(e): kairomones ; Trichogramma achaeae ; Trichogramma pretiosum ; Microplitis croceipes ; Heliothis Spp. ; host-seeking stimuli ; insect behavior ; releasers ; pest management ; biological control

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Chemie und Pharmazie

Notizen: Abstract Frass from larvae of the corn earworm,Heliothis zea (Boddie) and scales fromH. zea moths (that are known to contain the host-seeking stimulus, tricosane) stimulate and orient host-seeking activity in femaleMicroplitis croceipes (Cresson), a larval parasite ofH. zea, andTrichogramma spp., egg parasites ofH. zea. When larval frass, moth scales, and tricosane were used as sign stimuli (releasers) forM. croceipes, T. pretiosum (Riley), andT. achaeae Nagaraji and Nagarkatti, respectively, at time of their release from laboratory containers, parasite performance improved, resulting in significantly increased rates of parasitization over that of unstimulated parasites. Stimulation ofM. croceipes with larval frass had an overriding effect on this parasite's innate tendency to disperse upon release, thereby increasing the numbers remaining and prolonging their retention in the target area. Supplying the appropriate host-seeking stimuli to these 3 hymenopterous parasites ofH. zea at time of their release to improve their efficiency greatly increases the probability of their effective utilization in pest management systems.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00988584

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6

Digitale Medien

Trimethylammonium-bis(diäthylphosphono)-methylid, ein stabiles N-Ylid (1968)

Groß, H. ; Costisella, B.

Weinheim : Wiley-Blackwell

Zeitschrift für die chemische Industrie 80 (1968), S. 445-446

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ISSN: 0044-8249

Schlagwort(e): Chemistry ; General Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/ange.19680801112

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7

Digitale Medien

Ultrazentrifugale Molekulargewichtsbestimmungen an synthetischen hochpolymeren Stoffen. 91. Mitteilung über hochpolymere Verbindungen (1934)

Signer, R. ; Gross, H.

New York, NY : Wiley-Blackwell

Helvetica Chimica Acta 17 (1934), S. 335-351

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ISSN: 0018-019X

Schlagwort(e): Chemistry ; Organic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 2 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/hlca.19340170139

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8

Digitale Medien

Ultrazentrifugale Polydispersitätsbestimmungen an hochpolymeren Stoffen. 95. Mitteilung über hochpolymere Verbindungen (1934)

Signer, R. ; Gross, H.

New York, NY : Wiley-Blackwell

Helvetica Chimica Acta 17 (1934), S. 726-735

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ISSN: 0018-019X

Schlagwort(e): Chemistry ; Organic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Zusätzliches Material: 7 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/hlca.19340170188

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9

Digitale Medien

Über das Ditolylmethan aus Formaldehyd und Toluol (1910)

Fischer, O. ; Gross, H.

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 82 (1910), S. 231-237

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ISSN: 0021-8383

Schlagwort(e): Chemistry ; Organic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/prac.19100820114

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10

Digitale Medien

IX. Zur Kenntnis der Chrysophansäure, des Frangula-Emodins und einiger Oxoniumverbindungen von Anthracenderivaten (1911)

Fischer, O. ; Gross, H.

New York, NY : Wiley-Blackwell

Journal für Praktische Chemie/Chemiker-Zeitung 84 (1911), S. 369-382

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ISSN: 0021-8383

Schlagwort(e): Chemistry ; Organic Chemistry

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/prac.19110840121

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