Persistence of Eclosion Rhythm in Drosophila melanogaster After 600 Generations in an Aperiodic Environment

@article{Sheeba1999PersistenceOE,
  title={Persistence of Eclosion Rhythm in Drosophila melanogaster After 600 Generations in an Aperiodic Environment},
  author={Vasu Sheeba and V. K. Sharma and Maroli K. Chandrashekaran and Amitabh Joshi},
  journal={Naturwissenschaften},
  year={1999},
  volume={86},
  pages={448-449}
}
Abstract The ubiquity of circadian rhythms suggests that they have an intrinsic adaptive value (Ouyang et al. 1998; Ronneberg and Foster 1997). Some experiments have shown that organisms have enhanced longevity, development time or growth rates when maintained in environments whose periodicity closely matches their endogenous period (Aschoff et al. 1971; Highkin and Hanson 1954; Hillman 1956; Pittendrigh and Minis 1972; Went 1960). So far there has been no experimental evidence to show that… 
Persistence of oviposition rhythm in individuals of Drosophila melanogaster reared in an aperiodic environment for several hundred generations.
TLDR
The results indicate that the phenomenon of egg laying is rhythmic in individual D. melanogaster females and is controlled by an endogenous time keeping mechanism, which strengthens the view that possessing biological clocks may confer some intrinsic fitness advantage even to organisms living in aperiodic environments.
Evolution of circadian rhythms in Drosophila melanogaster populations reared in constant light and dark regimes for over 330 generations
TLDR
This study highlights that, contrary to the expected regression of circadian clock evolution in constant light, rearing in constant darkness leads to the evolution of more robust circadian clocks which may be attributed to an intrinsic adaptive advantage of circadian clocks and/or pleiotropic functions of clock genes in other traits.
Eclosion behaviour of three species of Drosophila under different light regimes.
TLDR
Data from experiments showed altered rhythm in the form of phase advance and phase delay in eclosion at different light regimes suggesting the role of photoperiod in the physiology of organisms.
Locomotor activity rhythm in Drosophila melanogaster after 600 generations in an aperiodic environment
TLDR
Persistence of circadian locomotor activity rhythm in a considerable proportion of these flies suggests an intrinsic adaptive value to possessing circadian rhythmicity, derived, perhaps, from the need to synchronise various processes within the organism.
Entrainment of Eclosion Rhythm in Drosophila melanogaster Populations Reared for More Than 700 Generations in Constant Light Environment
TLDR
The results clearly demonstrate that Drosophila melanogaster flies have preserved the ability to exhibit circadian rhythm of eclosion and the able to entrain to a wide range of periodic LD cycles even after being in an aperiodic environment for several hundred generations, suggesting that circadian clocks may have intrinsic adaptive value accrued perhaps from coordinating internal metabolic cycles in constant conditions.
Effect of different light regimes on fitness of two species of Drosophila montium subgroup
TLDR
Investigations were made to understand whether rhythm changes affect fitness of two co-existing species of montium a subgroup of Drosophila, and it was evident that these two species although genetically related exhibit different responses to different light regimes.
On the Adaptive Significance of Circadian Clocks for Their Owners
TLDR
The background for development of the framework currently used to test the hypothesis of adaptive significance of circadian rhythms is discussed and some of the basic criteria and the nature of evidence required to comprehensively understand circadian rhythms as adaptation are suggested.
Evolution of temporal order in living organisms
TLDR
The present review is an effort to critically discuss studies that directly or indirectly touch upon the issue of adaptive significance of circadian rhythms and highlight some shortcomings that should be avoided while designing future experiments.
Adaptive significance of circadian rhythms of montium a subgroup of Drosophila: I – locomotor behaviour
TLDR
Investigation of the effect of different light regimes on locomotor behaviour of the two co-existing species of montium, a subgroup of Drosophila found tremendous reduction in the activity in 30th generation flies compared to the 15th generation ones.
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