Note: Transovarial activity of the chitin synthesis inhibitor novaluron on egg hatch and subsequent development of larvae ofTribolium castaneum

2008 ◽  
Vol 36 (1) ◽  
pp. 38-41 ◽  
Author(s):  
A. Trostanetsky ◽  
M. Kostyukovsky
Keyword(s):  
Subsequent Development ◽  
Chitin Synthesis ◽  
Synthesis Inhibitor ◽  
Egg Hatch ◽  
Chitin Synthesis Inhibitor

The effects of triflumuron, a chitin synthesis inhibitor, on the housefly, Musca domestica (Diptera: Muscidae)

1995 ◽  
Vol 85 (1) ◽  
pp. 71-77 ◽  
Author(s):  
Julia Howard ◽  
Richard Wall
Keyword(s):  
Musca Domestica ◽  
Total Mortality ◽  
Cotton Cloth ◽  
Lower Percentage ◽  
Dependent Manner ◽  
Chitin Synthesis ◽  
Synthesis Inhibitor ◽  
Egg Hatch ◽  
Adult Females ◽  
Chitin Synthesis Inhibitor

AbstractThe effects of the chitin synthesis inhibitor triflumuron, 2-chloro-N-[[[4-(trifluoromethoxy)phenyl]amino]carbonyl]benzamide, on the housefly, Musca domestica Linnaeus were examined in the laboratory. A dose of 1 μg of triflumuron applied topically to adult females of M. domestica resulted in egg hatch inhibition greater than 95%. At doses below 1 μg applied topically to adult females, subsequent hatched larvae were also highly sensitive to triflumuron; 0.5 μg applied topically produced 25% inhibition of egg hatch, but of the larvae that eclosed, only 20% survived to pupation. Hence, a dose of 0.5 μg applied to adults gave a total mortality of 85%. The effects of a single topical application of triflumuron declined over time in a dose dependent manner. After a dose of 1 μg, <5% of the first egg batch hatched, however, after 14 days egg hatch had risen to >90%. Topically applied triflumuron was most effective in inhibiting egg hatch when applied to females less than 3 days old. After 60 min tarsal contact with 20% triflumuron suspension concentrate on poly cotton cloth, 100% egg hatch inhibition was maintained for up to 1 week. Lower contact times, or triflumuron concentrations, gave lower percentage mortalities. The results suggest that triflumuron has considerable potential as a control agent for incorporation into autosterilizing devices for housefly control. However, further work is required to develop delivery systems capable of transferring an effective dose to females under field conditions.

Age-Specific Reduction in German Cockroach (Blattoidea: Blattellidae) Populations Exposed to Diflubenzuron2

1991 ◽  
Vol 26 (2) ◽  
pp. 244-252
Author(s):  
Richard W. Wadleigh ◽  
Philip G. Koehler ◽  
Richard S. Patterson
Keyword(s):  
German Cockroach ◽  
Chitin Synthesis ◽  
Synthesis Inhibitor ◽  
Egg Hatch ◽  
Original Population ◽  
Male And Female ◽  
First Instar ◽  
Application Rates ◽  
Chitin Synthesis Inhibitor ◽  
Cockroach Blattella Germanica

The chitin synthesis inhibitor, diflubenzuron, caused age-specific reductions among populations of the German cockroach, Blattella germanica (L.), in test arenas (122 by 122 by 30.5 cm). Diflubenzuron at 30, 60, and 120 mg A.I./m2 killed nymphs with the molting first instar the most susceptible stage, and male and female adults that were exposed as nymphs. At the higher application rates (60 and 120 mg/m2), selective mortality during the first ecdysis resulted in lower numbers of older nymphs as the original population of cockroaches placed in the arenas matured. The decline in the number of older nymphs caused a shift in population age structure to one consisting almost entirely of first instar nymphs and adults. After 12 wk of exposure, total cockroach numbers were reduced by 67.3%, 93.0%, and 98.2% with residues of 30, 60, and 120 mg/m2, respectively. Diflubenzuron residues did not reduce egg hatch.

Transovarial transmission of novaluron in Choristoneura rosaceana (Lepidoptera: Tortricidae)

2014 ◽  
Vol 146 (3) ◽  
pp. 347-353 ◽  
Author(s):  
S.-H.S. Kim ◽  
C. Vandervoort ◽  
M.E. Whalon ◽  
J.C. Wise
Keyword(s):  
Fruit Production ◽  
Egg Mass ◽  
Choristoneura Rosaceana ◽  
Chitin Synthesis ◽  
Synthesis Inhibitor ◽  
Resistance Development ◽  
Egg Hatch ◽  
Obliquebanded Leafroller ◽  
Chitin Synthesis Inhibitor ◽  
Adult Exposure

AbstractThe obliquebanded leafroller (OBLR), Choristoneura rosaceana (Harris) (Lepidoptera: Tortricidae), has become a significant pest of tree fruit production in North America within the past 25 years. Control of the OBLR has historically relied upon broad-spectrum insecticides like organophosphates, carbamates, and pyrethroids. However, with evidence of resistance development, newer chemistries have been developed to combat this pest. The effects of novaluron, a chitin synthesis inhibitor, were studied to determine if reduced egg hatch occurs after exposure to adults. The transovarial effects of this compound were tested through laboratory bioassays, looking at decreased egg hatch and also presence of novaluron in egg masses following adult exposure. Results from the study demonstrated a decrease in egg hatch after adult exposure. Analysis of egg mass using HPLC also demonstrated novaluron present in the eggs laid by treated adults. Along with the direct ovicidal and larvicidal properties of novaluron, this transovarial activity provides an important contribution to the overall control seen in the field.

scholarly journals THE EFFECT OF AN INSECT CHITIN SYNTHESIS INHIBITOR ON HONEY BEES

Apidologie ◽  
1986 ◽  
Vol 17 (1) ◽  
pp. 73-76 ◽  
Author(s):  
E. W. HERBERT ◽  
R. J. ARGAUER ◽  
H. SHIMANUKI
Keyword(s):  
Honey Bees ◽  
Chitin Synthesis ◽  
Synthesis Inhibitor ◽  
Chitin Synthesis Inhibitor

Field-evolved resistance to chitin synthesis inhibitor insecticides by soybean looper, Chrysodeixis includens (Lepidoptera: Noctuidae), in Brazil

Chemosphere ◽  
2020 ◽  
Vol 259 ◽  
pp. 127499
Author(s):  
Regis F. Stacke ◽  
Daniela N. Godoy ◽  
Venicius E. Pretto ◽  
Fábio M. Führ ◽  
Patricia da S. Gubiani ◽  
...  
Keyword(s):  
Chitin Synthesis ◽  
Synthesis Inhibitor ◽  
Chitin Synthesis Inhibitor ◽  
Soybean Looper ◽  
Lepidoptera Noctuidae ◽  
Chrysodeixis Includens

scholarly journals Development-Disrupting Chitin Synthesis Inhibitor, Novaluron, Reprogramming the Chitin Degradation Mechanism of Red Palm Weevils

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4304 ◽  
Author(s):  
Abid Hussain ◽  
Ahmed Mohammed AlJabr ◽  
Hassan Al-Ayedh
Keyword(s):  
Expression Patterns ◽  
Invasive Pest ◽  
Chitin Synthesis ◽  
Red Palm Weevil ◽  
Synthesis Inhibitor ◽  
Chitin Degradation ◽  
Palm Weevil ◽  
Chitin Synthesis Inhibitor ◽  
Mortality Response ◽  
Study Laboratory

Disruption in chitin regulation by using chitin synthesis inhibitor (novaluron) was investigated to gain insights into the biological activity of chitinase in red palm weevils, an invasive pest of date palms in the Middle East. Impact of novaluron against ninth instar red palm weevil larvae was examined by dose-mortality response bioassays, nutritional indices, and expression patterns of chitinase genes characterized in this study. Laboratory bioassays revealed dose-dependent mortality response of ninth-instar red palm weevil larvae with LD50 of 14.77 ppm of novaluron. Dietary growth analysis performed using different doses of novaluron (30, 25, 20, 15, 10, and 5 ppm) exhibited very high reduction in their indexes such as Efficacy of Conversion of Digested Food (82.38%) and Efficacy of Conversion of Ingested Food (74.27%), compared with control treatment. Transcriptomic analysis of red palm weevil larvae characterized numerous genes involved in chitin degradation including chitinase, chitinase-3-like protein 2, chitinase domain-containing protein 1, Endochitinase-like, chitinase 3, and chitin binding peritrophin-a domain. However, quantitative expression patterns of these genes in response to novaluron-fed larvae revealed tissue-specific time-dependent expression patterns. We recorded overexpression of all genes from mid-gut tissues. Growth retarding, chitin remodeling and larvicidal potential suggest novaluron as a promising alternate for Rhynchophorus ferrugineus management.

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