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Wyszukujesz frazę "novel insecticide" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Biorational control of arthropod pests with emphasis on the use of the chitin synthesis inhibitor novaluron
Autorzy:
Ishaaya, I.
Lebedev, G.
Ghanim, M.
Horowitz, A.R.
Powiązania:
https://bibliotekanauki.pl/articles/55215.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
biorational control
arthropod
pest
chitin synthesis
novaluron
insecticide
insect
growth regulator
buprofezin
diflubenzuron
chlorfluazuron
pyriproxyfen
tebufenozide
methoxyphenozide
neonicotinoid
imidacloprid
acetamiprid
thiamethoxam
glutamate receptor
gamma-aminobutyric acid
abamectin
Spinosad preparation
novel insecticide
Opis:
Efforts have been made during the past three decades to develop insecticides with selective properties that act specifically on biochemical sites present in a particular insect group, but whose properties differ from those present in mammals. This approach has led to the discovery of compounds that affect the hormonal regulation of molting and developmental processes in insects such as ecdysone agonists, juvenile hormone (JH) mimics and chitin synthesis inhibitors. The search for potent acylureas has led to the development of novaluron (Rimon) developed by Makhteshim Chemical Works. The LC-50 value of novaluron on 3rd-instar Spodoptera littoralis fed on treated leaves is approximately 0.1 mg a.i./liter. This value resembles that of chlorfluazuron and is tenfold lower than that of teflubenzuron. Novaluron affects nymphs of Bemisia tabaci more than chlorfluazuron and teflubenzuron. Artificial rain, at a rate of 40 mm/h applied 5 and 24 h after treatment in a cotton field had no appreciable effect on the potency of novaluron on both S. littoralis larvae and B. tabaci nymphs. Hence, novaluron can be used in tropical areas and during rainy seasons. In general, benzoylphenyl ureas had no direct effect on parasitoids and phytoseiids and are considered mildly affect other natural enemies. Novaluron has no cross-resistance with conventional insecticides, the JH mimics pyriproxyfen and neonicotinoids. As such, it is considered an important compound in pest management programs.
Źródło:
Pestycydy; 2011, 1-4
0208-8703
Pojawia się w:
Pestycydy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biostable analogs of insect kinin and insectatachykinin neuropeptides: A review of novel classes of antifeedants and aphicides
Autorzy:
Nachman, R.J.
Smagghe, G.
Powiązania:
https://bibliotekanauki.pl/articles/55075.pdf
Data publikacji:
2011
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
fluid secretion
peptidase resistance
biostable analog
insect
kinin
insecticide
neuropeptide
novel class
antifeedant
aphicide
pea aphid
Acyrthosiphon pisum
aphid
control agent
Opis:
Neuropeptides are regulators of critical life processes in insects, but are subject to rapid degradation by peptidases in the hemolymph (blood), tissues and gut. This limitation can be overcome via replacement of peptidase susceptible portions of the insect neuropeptides with non-natural residues or moieties to create analogs with enhanced biostability. Two neuropeptide families, the insect kinins and insectatachykinins, stimulate gut motility and Malpighian tubule fluid secretion in certain insects but unmodified members demonstrate little or no effect when fed to pea aphids (Acyrthosiphon pisum) in an artificial diet. Nonetheless, biostable analogs developed via the strategic introduction of either bulky Aib residues and/or β-amino acids demonstrate potent antifeedant and aphicidal effects when administered orally; whereas other biostable analogs are inactive. Although the precise mechanism of action has not been delineated, the activity may be associated with disruption of the physiological processes that these neuropeptides regulate in insects. The most active of the biostable insect kinin and insectatachykinin analogs show LC50 values of 0.063 nmole/μl (LT50 = 1.68 days) and 0.0085 nmole/μl (LT50 = 1.1 days), respectively; matching or exceeding the potency of some commercially available aphicides. The biostable analogs represent important leads in the development of alternative, environmentally sound aphid control agents.
Źródło:
Pestycydy; 2011, 1-4
0208-8703
Pojawia się w:
Pestycydy
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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