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Extent of mismatch between the period of circadian clocks and light/dark cycles determines time-to-emergence in fruit flies.
MedLine Citation:
PMID:  24668961     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Circadian clocks time developmental stages of fruit flies Drosophila melanogaster, while light/dark (LD) cycles delimit emergence of adults, conceding only during the "allowed gate". Previous studies have revealed that time-to-emergence can be altered by mutations in the core clock gene period (per), or by altering the length of LD cycles. Since this evidence came from studies on genetically manipulated flies, or on flies maintained under LD cycles with limited range of periods, inferences that can be drawn are limited. Moreover, the extent of shortening or lengthening of time-to-emergence remains yet unknown. In order to pursue this further, we assayed time-to-emergence of D. melanogaster under twelve different LD cycles as well as in constant light (LL) and constant dark conditions (DD). Time-to-emergence in flies is lower under LL than in LD cycles and DD. Among the LD cycles, time-to-emergence is lower under T4-T8, followed by T36-48, and then T12-T32, suggesting that egg-to-emergence duration in flies becomes shorter when the length of LD cycles deviates from 24 hr, bearing a strong positive and a marginally negative correlation with daylength, for values shorter and longer than 24 hr, respectively. These results suggest that the extent of mismatch between the period of circadian clocks and environmental cycles determines the time-to-emergence in Drosophila. This article is protected by copyright. All rights reserved.
Authors:
Pankaj Yadav; Deepak Choudhury; Madhumala K Sadanandappa; Vijay Kumar Sharma
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-3-25
Journal Detail:
Title:  Insect science     Volume:  -     ISSN:  1744-7917     ISO Abbreviation:  Insect Sci.     Publication Date:  2014 Mar 
Date Detail:
Created Date:  2014-3-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101266965     Medline TA:  Insect Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
This article is protected by copyright. All rights reserved.
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