| | 1 | Author
| OmP. Agrawal, Klaus Scheller | Requires cookie* | | | Title
| Sclerotization of Insect Cuticle in a Cell-Free System  | | | | Abstract
| Incubation o f deproteinized larval cuticle (chitin flakes) with purified arylphorin (calli-phorin) or larval haemolymph o f Calliphora vicina resulted in the formation o f a chitin-protein complex. Enzymatic oxidation o f N-ß-alanyldopam ine (N D A B) in the presence o f chitin flakes or the chitin-protein com plex, resulted in various degrees o f cross-linking o f N B A D -quinone formed with chitin. This study confirms the involvement o f arylphorin in the process o f quinone tanning o f insect cuticle. | | | |
Reference
| Z. Naturforsch. 45c, 129—131 (1990); received October 4 1989 | | | |
Published
| 1990 | | | |
Keywords
| Arylphorin, Chitin, Cuticle, Sclerotization, Calliphora | | | |
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| default:Reihe_C/45/ZNC-1990-45c-0129.pdf | | | | Identifier
| ZNC-1990-45c-0129 | | | | Volume
| 45 | |
| 2 | Author
| Gerhard Heide | Requires cookie* | | | Title
| The Influence of Wingbeat Synchronous Feedback on the Motor Output Systems in Flies | | | | Abstract
| Action potentials have been recorded from fibrillar and from non-fibrillar flight muscles of tethered flying flies (Calliphora erythrocephala and M usca dom estica). Analyses of the spike-trains from the fibrillar muscles reveal a clear preference of the spikes to appear at a special phase with respect to the wingbeat cycle. This holds true even in cases of ex perim entally changed motor output patterns. There seems to be some kind of wingbeat-synchronous feedback which influences the output system phasically. Crosscorrelations between spike-trains from the fibrillar muscles on the one hand and the non-fibrillar muscles on the other give evidence that there are strong interactions between the output producing neurons of both systems with at least one inhibitory pathway. | | | |
Reference
| (Z. Naturforsch. 29c, 739 [1974]; received August 2 1974) | | | |
Published
| 1974 | | | |
Keywords
| Calliphora, Musca, Insect Flight, Motor O utput, Flight Muscles, Electrophysiology | | | |
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| default:Reihe_C/29/ZNC-1974-29c-0739.pdf | | | | Identifier
| ZNC-1974-29c-0739 | | | | Volume
| 29 | |
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