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Correlated changes in life history traits in response to selection for faster pre-adult development in the fruit fly Drosophila melanogaster

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dc.contributor.author Yadav, Pankaj
dc.contributor.author Sharma, Vijay Kumar
dc.date.accessioned 2017-02-16T11:37:42Z
dc.date.available 2017-02-16T11:37:42Z
dc.date.issued 2014
dc.identifier.citation Yadav, P; Sharma, VK, Correlated changes in life history traits in response to selection for faster pre-adult development in the fruit fly Drosophila melanogaster. Journal of Experimental Biology 2014, 217 (4) 580-589, http://dx.doi.org/10.1242/jeb.093864 en_US
dc.identifier.citation Journal of Experimental Biology en_US
dc.identifier.citation 217 en_US
dc.identifier.citation 4 en_US
dc.identifier.issn 0022-0949
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/2319
dc.description Restricted Access en_US
dc.description.abstract Insects including the fruit fly Drosophila melanogaster are under intense pressure to develop rapidly because they inhabit ephemeral habitats. We have previously shown that when selection for faster development was artificially imposed on D. melanogaster in the laboratory, reduction of pre-adult development time and shortening of the clock period occurs, suggesting a role for circadian clocks in the regulation of life history traits. Circadian clocks in D. melanogaster have also been implicated in the control of metabolic pathways, ageing processes, oxidative stress and defense responses to exogenous stressors. In order to rigorously examine correlations between pre-adult development time and other life history traits, we assayed pre-adult survivorship, starvation and desiccation resistance, body size and body weight, fecundity and adult lifespan in faster developing populations of D. melanogaster. The results revealed that selection for faster pre-adult development significantly reduced several adult fitness traits in the faster developing flies without affecting pre-adult survivorship. Although overall fecundity of faster developing flies was reduced, their egg output per unit body weight was significantly higher than that of controls, indicating that reduction in adult lifespan might be due to disproportionate investment in reproduction. Thus our results suggest that selection for faster pre-adult development in D. melanogaster yields flies with higher reproductive fitness. Because these flies also have shorter clock periods, our results can be taken to suggest that pre-adult development time and circadian clock period are correlated with various adult life history traits in D. melanogaster, implying that circadian clocks may have adaptive significance. en_US
dc.description.uri 1477-9145 en_US
dc.description.uri http://dx.doi.org/10.1242/jeb.093864 en_US
dc.language.iso English en_US
dc.publisher Company Of Biologists Ltd en_US
dc.rights @Company Of Biologists Ltd, 2014 en_US
dc.subject Biology en_US
dc.subject Fitness en_US
dc.subject Fecundity en_US
dc.subject Lifespan en_US
dc.subject Starvation en_US
dc.subject Desiccation en_US
dc.subject Circadian en_US
dc.subject Bactrocera-Cucurbitae Diptera en_US
dc.subject Starvation Resistance en_US
dc.subject Postponed Senescence en_US
dc.subject Stress Resistance en_US
dc.subject Artificial Selection en_US
dc.subject Circadian Regulation en_US
dc.subject Trade-Off en_US
dc.subject Evolution en_US
dc.subject Longevity en_US
dc.subject Span en_US
dc.title Correlated changes in life history traits in response to selection for faster pre-adult development in the fruit fly Drosophila melanogaster en_US
dc.type Article en_US


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