scholarly journals Insecticidal and Anti-juvenile Hormone Activities of Precocene II against the Grasshopper Euprepocnemis plorans plorans Charp. Orthoptera: Acrididae.

2017 ◽  
Vol Volume-1 (Issue-6) ◽  
pp. 510-524
Author(s):  
K. Ghoneim ◽  
A. Basiouny ◽  
Keyword(s):  
Juvenile Hormone ◽  
Precocene Ii ◽  
Euprepocnemis Plorans

scholarly journals Effect of precocene II, ecdysone and juvenile Hormone on the glicogen concentration in pupae of Stomocys calcitram (Diptera muscidae)

1988 ◽  
Vol 83 (4) ◽  
pp. 451-454
Author(s):  
M. L. M. Garcia ◽  
R. P. Mello ◽  
B. C. M. Mello
Keyword(s):  
Juvenile Hormone ◽  
Stomoxys Calcitrans ◽  
Glycogen Concentration ◽  
Precocene Ii ◽  
Third Instar Larvae

Third instar larvae of Stomoxys calcitrans (L.) were treated with precocene II, ecdysone and juvenile hormone. The larvae were allowed to develop until pupation and when it occurred, determination of glycogen levels was assayed. The administration of those three substances have interfered on the clycogen concentration. the precocene II causing a decrease whereas the ecdysone and juvenile hormone causing an increase. The ecdysone administered together withprecocene II reverses the effect of the latter. This does not happen when precocene II is administered together with the juvenile hormone. Ecdysone administered together with juvenilehormone causes reduction of the glycogen concentration.

Inhibition of flight muscle degeneration by precocene II in the spruce bark beetle, Dendroctonus rufipennis (Kirby) (Coleoptera: Scolytidae)

1980 ◽  
Vol 58 (3) ◽  
pp. 378-381 ◽  
Author(s):  
T. S. Sahota ◽  
S. H. Farris
Keyword(s):  
Juvenile Hormone ◽  
Bark Beetles ◽  
Flight Muscle ◽  
Muscle Degeneration ◽  
New Host ◽  
Dendroctonus Rufipennis ◽  
Spruce Bark ◽  
Precocene Ii ◽  
Flight Muscles ◽  
Reproductive Processes

Attack on the new host material by the adult bark beetles initiates reproductive processes and degeneration of flight muscles. Application of precocene II to adult female Dendroctonus rufipennis caused a temporary inhibition of flight muscle degeneration, as revealed by serial sections. This observation extends our knowledge of the effectiveness of precocene II to inhibiting an additional juvenile hormone-dependent process. The results also provide a confirmation of the role of juvenile hormone in the reproduction-associated degeneration of flight muscles.

Metabolic fate of the hepatotoxic anti-juvenile hormone precocene II in the rat

Toxicology ◽  
1982 ◽  
Vol 25 (4) ◽  
pp. 293-298 ◽  
Author(s):  
Scott J. Grossman ◽  
M.T. Stephen Hsia
Keyword(s):  
Juvenile Hormone ◽  
Metabolic Fate ◽  
Precocene Ii

Hepatotoxicity of the anti-juvenile hormone precocene II and the generation of dihydrodiol metabolites

1981 ◽  
Vol 37 (3) ◽  
pp. 265-277 ◽  
Author(s):  
M.T. Stephen Hsia ◽  
Scott Grossman ◽  
Kenneth R. Schrankel
Keyword(s):  
Juvenile Hormone ◽  
Precocene Ii

scholarly journals Effects of juvenile hormone analogue on ecdysis prevention induced by precocene in Rhodnius prolixus (Hemiptera: Reduviidae)

1984 ◽  
Vol 79 (4) ◽  
pp. 419-423 ◽  
Author(s):  
Patricia de Azambuja ◽  
André F. Furtado ◽  
Eloi S. Garcia
Keyword(s):  
Juvenile Hormone ◽  
Rhodnius Prolixus ◽  
Fourth Instar ◽  
Prothoracic Gland ◽  
Nuclear Area ◽  
Hormone Analogue ◽  
Molting Cycle ◽  
Juvenile Hormone Analogue ◽  
Precocene Ii ◽  
Prothoracic Glands

Precocene II, added to the meal of fourth-instar larvae of Rhodnius prolixus (25 mug/ml of blood), induced an in crease in the duration of the molting cycle. This effect was related to the decrease of both the nuclear area of the prothoracic gland cells and the mitotic activity in epidermal cellS. juvenile hormone analogue applied topically (60 mug/insect) together with Precocene II treatment avoided atrophy of the prothoracic glands and induced a higher number of epidermal mitosis accelerating the time of subsequent ecdysis. A possible relationship between juvenile hormone and production of ecdysone is discussed.

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