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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:

Yes, Archaea also have circadian clocks!

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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Why social insects do not suffer from ill effects of rotating and night shift work?

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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Circadian Rhythm of Aggression in Crayfish

Category: Animal Behavior

A new paper on circadian rhythms in crayfish behavior.

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To Equine Things There is a Season (guest post by Barn Owl)

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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Rainforest Glow-worms glow at night because their clock says so

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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Why do earthworms come up to the surface after the rain?

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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Clocks in Bacteria V: How about E.coli?

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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Clocks in Bacteria IV: Clocks in other bacteria

Category: Clock Zoo

Fourth in the five-part series on clocks in bacteria (from April 30, 2006):...

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Clocks in Bacteria III: Evolution of Clocks in Cyanobacteria

Category: Clock Zoo

The third installment in the five-part series on clocks in bacteria (from April 19, 2006):...

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Clocks in Bacteria II: Adaptive Function of Clocks in Cyanobacteria

Category: Clock Zoo

Second post in a series of five (from April 05, 2006):...

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