Rythmes circadiens
نویسندگان
چکیده
منابع مشابه
Simulation multi-agent de réseaux génétiques : les rythmes circadiens d'Ostreococcus tauri (présentation courte)
We report here our research on the modelling of biological circadian rhythms (i.e. ∼ 24 h) in a unicellular green alga, Ostreococcus tauri. Such rhythms are the result of the regulation of genetic transcription. We present several models designed by physicians and computer scientists, in order to identify molecular actors of the circadian clock. We therefore compare biological assumptions, simu...
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Circadian rhythms are endogenous oscillations that occur with a period close to 24 h in nearly all living organisms. These rhythms originate from the negative autoregulation of gene expression. Deterministic models based on such genetic regulatory processes account for the occurrence of circadian rhythms in constant environmental conditions (e.g., constant darkness), for entrainment of these rh...
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période de cohabitation dans les greniers après les récoltes du niébé. Abstract : With an automatic image analysis device, we studied the temporal distribution of the locomotor activity of E orientalis and E vuilleti during 24 hours, and over several days to know whether the activity rhythms of these two Eupelmidae play a role in their competitive interactions. The analysis of locomotor activit...
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Glossina palpalis gambiensis and G. tachinoides are the main vectors of human and animal trypanosomoses in West Africa. In some parts of their distribution area, they co-exist in sympatry, but little is known about their interactions. This study aimed to explore their respective flight height and daily activity when co-existing or alone. Attractive targets were used, made of a black/blue/black ...
متن کاملMelatonin and 5 - methoxytryptamine in non - metazoans Rüdiger Hardeland
Melatonin seems to be an almost ubiquitous substance, which has been detected not only in metazoans, but also in all major non-metazoan taxa investigated, including bacteria, dinoflagellates, euglenoids, trypanosomids, fungi, rhodophyceans, pheophyceans, chlorophyceans and angiosperms. Despite its vast abundance, little is known to date about its functions. Its presence is not necessarily assoc...
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ژورنال
عنوان ژورنال: Hegel
سال: 2019
ISSN: 2269-0530,2115-452X
DOI: 10.3917/heg.093.0231a