Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Entomology 32 (1987), S. 225-251 
    ISSN: 0066-4170
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    ISSN: 1573-8248
    Keywords: Spodoptera frugiperda ; nuclear polyhedrosis virus ; resistance ; Spodoptera frugiperda ; virus de la polyédrose nucléaire ; résistance
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Description / Table of Contents: Résumé Les doses léthales moyennes (DL 50) du virus de la polyédrose nucléaire (NPV) ont été déterminées dans la descendance néo-natale de larves deSpodoptera frugiperda (J. E. Smith) capturées au Sud-Est de la Louisiane en 1981, 1982 et 1984. Ces doses moyennes léthales (DL 50) variaient de 1,8 à 16,3 corps d'inclusion polyédriques par insectes (PIB/Insect). Les DL 50 augmentaient significativement (P〈0,05) durant la saison 1982, mais ne présentaient aucune tendance régulière ni en 1981 ni en 1984. Cependant, les populations deS. frugiperda accroissaient l'hétérogénéité de leur réaction au virus de la polyédrose nucléaire durant les 3 années. La DL 50 augmentait de 4,1 à 18,7 PIB/insecte dans une colonie deS. frugiperda exposée au virus de la polyédrose nucléaire (DL 50) durant 7 générations, tandis que dans une colonie témoin non exposée au virus, la DL 50 était de 5,9 PIB/insect après 7 générations.
    Notes: Abstract Median lethal doses (LD50s) of nuclear polyhedrosis virus (NPV) were determined in neonatal offspring ofSpodoptera frugiperda (J. E. Smith) (Sf) larvae captured in southeastern Louisiana in 1981, 1982, and 1984. These LD50s ranged from 1.8 to 16.3 polyhedral inclusion bodies (PIB)/insect. The LD50s significantly (P〈0.05) increased during the season of 1982 but had no pattern in 1981 or 1984. However, the Sf populations increased in heterogeneity of response to the NPV during all 3 years. The LD50 increased from 4.1 to 18.7 PIB/insect in a Sf laboratory colony exposed to the NPV LD80 for 7 generations, whereas in a control colony not exposed to NPV the LD50 was 5.9 PIB/insect after 7 generations.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Journal of chemical ecology 16 (1990), S. 1751-1759 
    ISSN: 1573-1561
    Keywords: Heliothis zea ; Lepidoptera ; Noctuidae ; Nomuraea rileyi ; Deuteromycotina ; fungi ; α-tomatine ; allelochemical ; third trophic level
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract To determine the impact of α-tomatine at the third trophic level, the following model was developed:Nomuraea rileyi (Farlow) Samson, the secondary consumer, acting onHeliothis zea (Boddie), the primary consumer, fed an artificial diet modified with α-tomatine. In vitro, the allelochemical inhibited colony formation and growth of the fungus. The in vivo test revealed that larval growth and developmental time were affected by α-tomatine andN. rileyi. Detrimental effects on pupal development were observed in larvae fed diet containing α-tomatine and also treated withN. rileyi (LC90). The fungus was detected in the hemolymph and tissue of larvae treated with two lethal concentrations (LC50 and LC90) ofN. rileyi, including those fed α-tomatine. At the LC50, α-tomatine protected larvae againstN. rileyi and increased survivorship; at the LC90, it inhibited the development ofN. rileyi, thereby reducing production of conidia. Thus, the allelochemical α-tomatine retains its antifungal qualities beyond the second trophic level, inhibiting the development ofN. rileyi inH. zea.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...