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My scientific specialty is chronobiology (circadian rhythms and photoperiodism), with additional interests in comparative physiology, animal behavior and evolution. I am not an MD so I cannot diagnose and treat your sleep problems. As well as writing this blog, I am also the Online Discussion Expert for PLoS. This is a personal blog and opinions within it in no way reflect the policies of PLoS. You can contact me at: Coturnix@gmail.com

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Clock Zoo:
Category: Chronobiology
Whenever I read a paper from Karl-Arne Stokkan's lab, and I have read every one of them, no matter how dense the scientese language I always start imagining them running around the cold, dark Arctic, wielding enormous butterfly nets, looking...
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Posted by Coturnix at 1:52 AM • 10 Comments • 0 TrackBacks
Category: Chronobiology
If you ever glanced at the circadian literature, you have probably encountered the statement that "circadian rhythms are ubiquitous in living systems". In all of my formal and informal writing I qualified that statement somewhat, stating something along the lines...
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Posted by Coturnix at 11:41 AM • 7 Comments • 0 TrackBacks
Category: Animal Behavior
Most people are aware that social insects, like honeybees, have three "sexes": queens, drones and workers. Drones are males. Their only job is to fly out and mate with the queen after which they drop dead. Female larvae fed 'royal...
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Posted by Coturnix at 3:18 PM • 14 Comments •
Category: Animal Behavior
A new paper on circadian rhythms in crayfish behavior.
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Posted by Coturnix at 4:20 PM • 10 Comments •
Category: Clock Zoo
As I announced this morning, there will be several guest posts here over the next several weeks. The first one, by Barn Owl of the lovely Guadalupe Storm-Petrel blog, is likely to appeal to a lot of my readers as...
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Posted by Coturnix at 11:52 AM • 1 Comments •
Category: Clock Zoo
Glow worms glimmer on cue: University of Queensland researcher and lecturer Dr David Merritt has discovered that Tasmanian cave glow-worms are energy conservationists: they switch their lights off at night-time. The discovery was made during a partially funded UQ Firstlink...
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Posted by Coturnix at 11:06 PM • 1 Comments •
Category: Clock Zoo
Believe it or not, this appears to have something to do with their circadian rhythms! Back in the 1960s and early 1970s, there was quite a lot of research published on the circadian rhythms in earthworms, mostly by Miriam Bennett....
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Posted by Coturnix at 9:38 PM • 13 Comments • 0 TrackBacks
Category: Clock Zoo
Fifth in the five-part series on clocks in bacteria, covering more politics than biology (from May 17, 2006):...
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Posted by Coturnix at 7:55 AM • 2 Comments • 0 TrackBacks
Category: Clock Zoo
Fourth in the five-part series on clocks in bacteria (from April 30, 2006):...
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Posted by Coturnix at 7:54 AM • • 0 TrackBacks
Category: Clock Zoo
The third installment in the five-part series on clocks in bacteria (from April 19, 2006):...
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Posted by Coturnix at 7:53 AM • 1 Comments • 0 TrackBacks