Natural conditions override differences in emergence rhythm among closely related drosophilids

PloS One
Priya M PrabhakaranVasu Sheeba

Abstract

Previous studies on adult emergence rhythm of Drosophila melanogaster (DM) done under semi-natural conditions have shown that emergence is correlated to daily changes in temperature, humidity and light at dawn. Recently we showed that under laboratory conditions D. ananassae (DA), a closely related species of DM exhibits patterns in its activity/rest rhythm distinct from the latter. Here, we report the results of a study aimed at examining whether this difference in activity/rest rhythm among species extends to other circadian behaviours such as the adult emergence rhythm under a more natural environment with multiple cyclic time cues. We monitored the adult emergence rhythm of recently wild-caught DM and DA populations in parallel with those of a related species D. malerkotliana (DK), both in the laboratory and under semi-natural conditions. We find that although DM, DK and DA showed marked difference from one another under laboratory conditions, such differences were not detectable in the emergence behaviour of these three species under semi-natural conditions, and that they respond very similarly to seasonal changes in the environment. The results suggest that seasonal changes in temperature and humidity contribute largely t...Continue Reading

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Oct 22, 2013·The Journal of Experimental Biology·Priya M Prabhakaran, Vasu Sheeba

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Citations

Jul 23, 2014·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·Priya M Prabhakaran, Vasu Sheeba
Oct 1, 2018·The European Journal of Neuroscience·Charlotte Helfrich-FörsterPamela Menegazzi
Dec 23, 2015·Journal of Genetics·B N Singh, J P Yadav
Mar 24, 2021·Journal of Biological Rhythms·Arijit GhoshVasu Sheeba

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