ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
  • 1
    Digitale Medien
    Digitale Medien
    Endocrine background of how 20-hydroxyecdysone agonist, RH 5849, influences diurnal pattern of pupation in shape Spodoptera littoralis (1998)
    Springer
    Entomologia experimentalis et applicata 87 (1998), S. 255-261 
    Details
    ISSN: 1570-7458
    Schlagwort(e): Spodoptera littoralis ; pesticides ; RH-5849 ; ecdysteroids ; pupation ; circadian rhythmicity
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Under laboratory conditions (L16:D8, 24°C, r.h. 80%), applying of an ecdysone agonist, RH 5849, (1,2-dibenzoyl-1-tert-butylhydrazine) onto final instar larvae of Spodoptera littoralis (Boisd.), Noctuidae, Lepidoptera, delayed or advanced the time of pupation depending on the time of treatment. This response was dose-dependent. In addition, non-lethal doses of RH 5849, ranging from 0.05 to 10 µg/larva were used. Following treatment of S. littoralis larvae with 5 µg RH 5849 the endogenous ecdysteroid level was increased or decreased depending on the time of application. Based on the results presented, we suggest that potential users of non-steroidal ecdysone agonists should consider the proper circadian timing of application in the field.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1003258319630
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Significance of penetration and metabolism on topical toxicity of diflubenzuron in Spodoptera littoralis and Spodoptera exigua (1997)
    Springer
    Entomologia experimentalis et applicata 82 (1997), S. 255-260 
    Details
    ISSN: 1570-7458
    Schlagwort(e): diflubenzuron ; topical toxicity ; cuticle penetration ; metabolism ; Spodoptera littoralis/ ; Spodoptera exigua
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Toxicity assays indicated that when diflubenzuron (DFB) was topically applied on larvae of the Egyptian cotton leafworm, Spodoptera littoralis (Boisduval), and the beet armyworm, Spodoptera exigua (Hübner), estimated LD50 values were similar, reaching 0.47 and 0.44 ng/larva, respectively. This study evaluated the importance of the rate of uptake and excretion, and of enzymatic metabolism in building up an insecticidal toxicity after topical application on the insect cuticle in both species. In general, penetration of DFB in S. littoralis was about 2-fold higher than in S. exigua, whereas metabolic breakdown was of minor importance in S. littoralis as compared with S. exigua. The current data indicate the importance of cuticle penetration and discuss that extrapolation from oral feeding toxicity results to topical toxicity data should be evaluated with caution, especially for insect growth regulators used in integrated pest management.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1002948719578
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Nonsteroidal moulting hormone agonists: effects on protein synthesis and cuticle formation in Colorado potato beetle larvae (1999)
    Springer
    Entomologia experimentalis et applicata 93 (1999), S. 1-8 
    Details
    ISSN: 1570-7458
    Schlagwort(e): nonsteroidal ecdysone mimic ; RH-0345 ; tebufenozide ; RH-5849 ; precocious moulting ; polypeptide synthesis ; haemolymph ; cuticle ; ultrastructure ; Leptinotarsa decemlineata
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Larvae of the Colorado potato beetle, Leptinotarsa decemlineata (Say), that were orally treated with RH-0345 at 0.1 mg l−1, RH-5849 at 10 and 50 mg l−1, tebufenozide at 2 g l−1, and 20-hydroxyecdysone at 2 g l−1, showed symptoms of premature moulting, followed by inhibition of ecdysis. In addition, fresh weight gain and total protein content were blocked. The effects on haemolymphal and cuticular polypeptides after PAGE were linked with premature, new epicuticle deposition as was observed under the electron microscope. These observations support the concept that the ecdysteroid-mimicking action of the three nonsteroidal molecules is specific.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1003848728677
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...