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1994 (1)
1983 (1)
1Author    Hans-Joerg Ferenz, Ingrid DiehlRequires cookie*
 Title    Stimulation of Juvenile Hormone Biosynthesis in vitro by Locust Allatotropin  
 Abstract    In Locusta migratoria the gonotrophic cycles are regulated by juvenile horm one. The cyclical changes o f juvenile hormone synthesis in locust corp ora allata seem to be regulated by a neuro-hormonal factor. Such an allatotropin could be extracted from corp ora card iaca and brains of Locusta migratoria. It is a small pronase-sensitive and heat-stable peptide. E xtract o f one corpus cardiacum stimulates corpus allatum biosynthetic activity in vitro 5 to 20-fold. 
  Reference    Z. Naturforsch. 38c, 856 (1983); received April 22/Ju ly 4 1983 
  Published    1983 
  Keywords    Locusta migratoria, Neurohorm ones, Allatotropin, Juvenile H orm one Biosynthesis, Oogenesis 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0856.pdf 
 Identifier    ZNC-1983-38c-0856 
 Volume    38 
2Author    G. S. Tarn Eck Er3, P.B K Och3, S. M. Atsum Otob, T. M. Itsui5, D. BiickmRequires cookie*
 Title    Localization of the Pupal Melanization Reducing Factor of Inachis io (L.) and Comparison with Melanization and Reddish Coloration Hormone  
 Abstract    In Inachis io, a pupal melanization reducing factor (PMRF) which controls morphological color adaptation is located in the brain, suboesophageal ganglion, thoracic ganglia, and all abdominal ganglia. Higher PM RF am ounts were extracted from abdominal ganglia than from the anterior ganglia. No PMRF activity could be found in the Corpora cardiaca-Corpora allata complex, in segmentally branching nerves of abdominal ganglia and their connectives. Extracts from brain-thoracic ganglia and abdominal ganglia complex of I. io contained also a factor with melanization and reddish coloration hormone (MRCH) activity in Pseudaletia separata and with pherom one biosynthesis activating neuropeptide (PBAN) activity in Bom-byx mori. However, injection of synthetic Pseudaletia pheromonotropin (Pss-PT) (= Pss-MRCH) into prepupae of I. io did not yield a melanization reducing effect. Therefore, PMRF and the PBAN/M RCH related neuropeptides seem to be different molecules. The PBAN-like factor from I. io is possibly related to the myotropins and pyrokinins of insects. 
  Reference    Z. Naturforsch. 49c, 476—482 (1994); received March 22 1994 
  Published    1994 
  Keywords    Neurohorm one, Color Adaptation, Pupal Melanization Reducing Factor, Inachis io 
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 TEI-XML for    default:Reihe_C/49/ZNC-1994-49c-0476.pdf 
 Identifier    ZNC-1994-49c-0476 
 Volume    49