scholarly journals Juvenile Hormone Activity of Juvabione Analogues against Pyrrhocoris apterus(Hemiptera:Pyrrhocoridae)

1993 ◽  
Vol 28 (1) ◽  
pp. 118-121 ◽  
Author(s):  
Kenzo KAWAI ◽  
Chika TAKAHASHI ◽  
Atsushi NUMATA ◽  
Sergey CHERNYSH ◽  
Alexandr NESIN ◽  
...  
Keyword(s):  
Juvenile Hormone ◽  
Hormone Activity ◽  
Pyrrhocoris Apterus ◽  
Juvenile Hormone Activity

Natural and synthetic materials with insect hormone activity

Development ◽  
1968 ◽  
Vol 20 (1) ◽  
pp. 25-31
Author(s):  
P. Masner ◽  
K. Sláma ◽  
V. Landa
Keyword(s):  
Embryonic Development ◽  
Juvenile Hormone ◽  
Abnormal Development ◽  
Hormone Activity ◽  
Pyrrhocoris Apterus ◽  
Synthetic Materials ◽  
Juvenile Hormone Analogues ◽  
Insect Metamorphosis ◽  
Juvenile Hormone Activity ◽  
Imaginal Differentiation

The juvenile hormone of insects is known to inhibit the process of insect metamorphosis. It is also known to stimulate ovarian growth in adult females of some species. It has been found recently that some substances with juvenile hormone activity also influence embryonic development. In the bug Pyrrhocoris apterus such substances, which prevent imaginal differentiation in metamorphosis, also affect the differentiation process of embryos at a certain stage of egg development (Sláma & Williams, 1966). This has been confirmed with other juvenile hormone analogues on embryonic development of silkworm eggs (Riddiford & Williams, 1967) and grasshoppers (Novák, 1967). According to the above observations eggs treated with the substances show abnormal development of the embryos, which may pass successfully through the early stages of embryogenesis but are unable to complete differentiation. Usually the embryos do not develop beyond the stage of blastokinesis and die within the egg shells.

Juvenile hormone activity of structurally unrelated compounds

1965 ◽  
Vol 11 (12) ◽  
pp. 1641-1649 ◽  
Author(s):  
Howard A. Schneiderman ◽  
A. Krishnakumaran ◽  
V.G. Kulkarni ◽  
Lester Friedman
Keyword(s):  
Juvenile Hormone ◽  
Hormone Activity ◽  
Juvenile Hormone Activity

scholarly journals Utilization of Synthetic Compounds with Juvenile Hormone Activity for the Silkworm Rearing

1972 ◽  
Vol 36 (5) ◽  
pp. 889-892 ◽  
Author(s):  
Masazumi NIHMURA ◽  
Soji AOMORI ◽  
Kenji MORI ◽  
Masanao MATSUI
Keyword(s):  
Juvenile Hormone ◽  
Hormone Activity ◽  
Synthetic Compounds ◽  
Juvenile Hormone Activity

Juvenile hormone activity of ethylfarnesoate dihydrochloride with the cotton stainer Dysdercus cardinalis Gerst

1971 ◽  
Vol 61 (1) ◽  
pp. 41-48 ◽  
Author(s):  
W. R. Bransby-Williams
Keyword(s):  
Juvenile Hormone ◽  
Hormone Activity ◽  
The Family ◽  
Cotton Stainers ◽  
Juvenile Hormone Activity ◽  
Cotton Stainer ◽  
The Tropics ◽  
Dysdercus Cardinalis

Cotton stainers (Dysdercus spp.) are members of the family Pyrrhocoridae and many are pests of cotton throughout the tropics. Ten species are found in Africa (Pearson, 1958). Three of these have been established in colonies at Arusha, Tanzania. They are D. cardinalis Gerst., D. fasciatus Sign. and D. nigrofasciatus Stål.

Studies in terpenoids. IV. Synthetic studies in juvabiones and analogues. Conversion of ar- (+)-turmerone to ar- (+)-juvabione

1968 ◽  
Vol 46 (9) ◽  
pp. 1467-1472 ◽  
Author(s):  
K. Subrahmania Ayyar ◽  
G. S. Krishna Rao
Keyword(s):  
Juvenile Hormone ◽  
Hormone Activity ◽  
Synthetic Compounds ◽  
Juvenile Hormone Activity ◽  
Synthetic Studies ◽  
Synthetic Work

Synthetic work leading to the preparation of todomatuic acids (2a), juvabiones (2b), and ar-(±)-juvabione (8d) and the successful conversion of ar-(+)-turmerone (9) to ar-(+)-juvabione (3b) is presented. The synthetic compounds 2b and 3b exhibit juvenile hormone activity.

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