Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/2077
Title: On the relevance of using laboratory selection to study the adaptive value of circadian clocks
Authors: Abhilash, Lakshman
Sharma, Vijay Kumar
Keywords: Entomology
Adaptation
adaptive value
circadian
Drosophila
evolution
fitness
insects
laboratory selection
life history
Flies Drosophila-Melanogaster
Late Emergence Chronotypes
Teleost Fish Genomes
Aperiodic Environment
Adult Emergence
Eclosion Rhythm
600 Generations
Narrow Window
Life-History
Time
Issue Date: 2016
Publisher: Wiley-Blackwell
Citation: Abhilash, L.; Sharma, V. K., On the relevance of using laboratory selection to study the adaptive value of circadian clocks. Physiological Entomology 2016, 41 (4), 293-306 http://dx.doi.org/10.1111/phen.12158
Physiological Entomology
41
4
Abstract: The phrase as sure as night comes after day' highlights the most conspicuous phenomenon on earth (i.e. the daily cycling of geophysical factors). It is hypothesized that life-forms on earth have evolved timekeeping mechanisms (circadian clocks) as adaptations to cope with such cyclic variations in their environment and, to test this hypothesis, diverse strategies have been employed. In this review, these different approaches, including comparative, clinal, ecology and/or trait manipulation and laboratory selection strategies are discussed, aiming to evaluate the adaptive value of circadian clocks. The limitations of each of these methods are assessed, and it is suggested that laboratory selection is an ideal, potent and suitable strategy for examining whether circadian clocks are indeed adaptations. In support of this, laboratory selection strategies are highlighted and critically reviewed in a discussion of studies that demonstrate the evolution of circadian clocks and life-history traits in response to selection for the timing of rhythmic behaviours, as well as those studies that demonstrate the evolution of circadian clocks in response to selection for life-history traits. Finally, newer approaches are proposed that involve the use of mutants, simultaneous manipulation of multiple environmental factors and genomic technologies in conjunction with laboratory selection to further explore the adaptive significance of circadian clocks.
Description: Restricted Access
URI: http://hdl.handle.net/10572/2077
ISSN: 0307-6962
Appears in Collections:Research Articles (V. K. Sharma)

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