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The blowfly Phormia is currently used for studying various aspects of aging. In the context of comparative life history studies this fly can be characterized as an example of an 'r' selected type with a short life span and explosive reproduction. This is in contrast to the mecopteran fly Panorpa which shows senescence even under free living conditions and(More)
The age-dependent variations in the amount of food ingestion, egg production, and flight activity of protein-fed female Phormia terrae novae were analyzed. Also the influence of mating and forced physical performance on the time course of these parameters and on life span were tested. In virgin females, the life span with the investigated factors is(More)
  • K-G Collatz
  • 2004
Insects can serve as excellent models to show that the genetically determined life span of organisms as well as that of other traits is characterized by high phenotypic plasticity. Depending on different environmental conditions the life cycle strategy can therefore be highly variable. Thus developmental and aging processes are subjected to delaying or(More)
1. By monitoring changes of fluorescence of NADH the frequencies, amplitudes and maximum slopes of the glycolytic oscillator of Phormia were analyzed in 5, 9, 15 and 21-day-old male flies. 2. In order to evaluate the possible existence of circadian rhythms within the oscillatory system, all determinations were repeated eight times/day. 3. In addition, the(More)
The multiplicity of different life forms in the world of organisms contrast strikingly with the uniformity of aging mechanisms. For this reason, even insects may be employed as model organisms for aging processes. Ultrastructural changes in aging mitochondria, for example, are also known in insect physiology. Further examples are changes in biochemical(More)
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