Naturwissenschaften

, Volume 86, Issue 9, pp 448–449

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

  • V. Sheeba
  • V. K. Sharma
  • M. K. Chandrashekaran
  • A. Joshi
Short Communication

DOI: 10.1007/s001140050651

Cite this article as:
Sheeba, V., Sharma, V., Chandrashekaran, M. et al. Naturwissenschaften (1999) 86: 448. doi:10.1007/s001140050651

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 circadian rhythms per se (i.e. periodicity itself, as opposed to phasing properties of a rhythm) confer a fitness advantage. We show that the circadian eclosion rhythm persists in a population of the fruitfly Drosophila melanogaster maintained in constant conditions of light, temperature, and humidity for over 600 generations. The results suggest that even in the absence of any environmental cycle there exists some intrinsic fitness value of circadian rhythms.

Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • V. Sheeba
    • 1
  • V. K. Sharma
    • 1
  • M. K. Chandrashekaran
    • 1
  • A. Joshi
    • 1
  1. 1.Evolutionary and Organismal Biology Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, P.O. Box 6436, Jakkur, Bangalore 560064, IndiaIN