Juvenile hormone breaks ovarian diapause in two nymphalide butterflies
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چکیده
منابع مشابه
Juvenile hormone titers, juvenile hormone biosynthesis, ovarian development and social environment in Bombus terrestris.
The effects of the social environment and age on juvenile hormone (JH) and reproduction were investigated by measuring ovarian development, hemolymph levels of JH III, and rates of JH biosynthesis from the same individual bumble bees (Bombus terrestris). Differences in social environment were associated with differences in rates of JH biosynthesis, JH titer and ovarian development. Young queenl...
متن کاملJuvenile hormone-mediated termination of larval diapause in the bamboo borer, Omphisa fuscidentalis.
Larvae of the bamboo borer, Omphisa fuscidentalis are in diapause for more than nine months (Singtripop, T., Wanichaneewa, S., Tsuzuki, S., Sakurai, S. 1999. Larval growth and diapause in a tropical moth, Omphisa fuscidentalis Hampson. Zool. Sci. 16, 725-733). To examine the endocrine mechanisms underlying this larval diapause, we assayed the responsiveness of the diapausing larvae to 20-hydrox...
متن کاملComparison of two juvenile hormone radioimmunoassays.
Juvenile hormone from the hemolymph of adult worker honey bees of known age and behavioral status was extracted and analyzed by two different radioimmunoassays in two independent laboratories. The assays are different in hapten attachment, radiolabeled tracer, and the method by which bound and unbound hormone are separated. Despite these differences in the methods, hormone determinations were i...
متن کاملRecombinant Juvenile Hormone Esterase as a Biochemical Anti-Juvenile Hormone Agent: Effects on Ovarian Development in Acheta domesticus
By investigating the effects of recombinant juvenile hormone esterase (JHE) on the stimulation of ovarian development and egg laying in the house cricket Acheta domesticus L., we have tested the hypothesis that recombinant JHE (derived from the tobacco budworm Heliothis virescens) can be used as a biochemical anti-juvenile hormone (JH) agent. Recombinant JHE, produced by a genetically engineere...
متن کاملJuvenile Hormone in Insects
■ Abstract The mevalonate pathway in insects has two important peculiarities, the absence of the sterol branch and the synthesis of juvenile hormone (JH), that may have influenced the mechanisms of regulation. The data available on these mechanisms indicate that cholesterol does not play a regulatory role and that JH modulates transcript levels of a number of genes of the mevalonate pathway or ...
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ژورنال
عنوان ژورنال: Experientia
سال: 1972
ISSN: 0014-4754,1420-9071
DOI: 10.1007/bf01957883