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1995 (1)
1990 (1)
1Author    KlausH. Hoffmann, Edeltraud Thiry, Rene LafontRequires cookie*
 Title    4-Deoxyecdysteroids in an Insect ( Gryllus bimaculatus)  
 Abstract    Following injection or ingestion o f [3H]ecdysone and [3 H]20-hydroxyecdysone, respectively, considerable quantities of 14-deoxyecdysteroids could be extracted from gut and faeces of female adult crickets. The compounds were identified as 14-deoxyecdysone and 14-deoxy-20-hydroxyecdysone on the basis o f comigration with reference substances in two H P L C systems and by its mass spectrum (only 14-deoxy-20-hydroxyecdysone). The 14-dehydroxylation is most probably caused by bacteria from the gut lumen. Feeding of [3 H]ecdysone resulted in the appearance of labelled 14-deoxyecdysone also in ovaries, fat body, muscles, and rest of the body. 
  Reference    Z. Naturforsch. 45c, 703—708 (1990); received January 3 1990 
  Published    1990 
  Keywords    Crickets, Ecdysone Metabolism, 14-Dehydroxylation, Intestinal Flora 
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 TEI-XML for    default:Reihe_C/45/ZNC-1990-45c-0703.pdf 
 Identifier    ZNC-1990-45c-0703 
 Volume    45 
2Author    Judith Lorenz, Margit Lenz, KlausH. HoffmannRequires cookie*
 Title    Effects of Pharmacological Agents on Ecdysteroid Synthesis in vitro in Ovaries and Abdominal Integument from Female Adult Crickets, Gryllus bimaculatus de Geer (Ensifera, Gryllidae)  
 Abstract    In fem ale adults of G ryllus bimaculatus, ovaries as well as the abdominal integument pro­ duce free and conjugated ecdysteroids in vitro (Hoffmann et al., 1992). The aim of the current study was to determine the influence of various potential ecdysteroid biosynthesis effectors (RH 5849, KK 42, diflubenzuron, ketoconazole, azadirachtin, acetylenic and allenic 
  Reference    Z. Naturforsch. 50c, 286 (1995); received October 14 1994/February 2 1995 
  Published    1995 
  Keywords    Crickets, Ecdysteroid Biosynthesis, Ecdysteroid Agonist, Antiecdysteroid, Cycloheximide 
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 TEI-XML for    default:Reihe_C/50/ZNC-1995-50c-0286.pdf 
 Identifier    ZNC-1995-50c-0286 
 Volume    50