My HomepageMy homepage is at http://coturnix.org. It is temporarily stripped to minimal information, but more will come soon.
Search This Blog:
There are no public comments available to display.
- Food goes through a rabbit twice. Think what that means!
- The Irish-Serbian connection
- Postscript to Pittendrigh's Pet Project - Phototaxis, Photoperiodism and Precise Projectile Parabolas of Pilobolus on Pasture Poop
- Carolus Linnaeus's Floral Clocks
- Sleep Schedules in Adolescents
- BIO101 - Physiology: Coordinated Response
- Biology and the Scientific Method
- The PepsiGate linkfest
- Is education what journalists do?
- New and Exciting in PLoS this week
- The "finger-like" parapostzygapophyseal processes of <i>Qijianglong</i> wp.me/p7FmM-2Wy 8 hours ago
- This is the year we find out whether new media can scale or not gigaom.com/2015/01/29/thi… via @gigaom 9 hours ago
- Which ecological and evolutionary theories are widely misunderstood even by experts? wp.me/p2wMuW-38o via @DynamicEcology 16 hours ago
- Lizard Olympians Benefit from Training Just Like Their Human Counterparts anoleannals.org/2015/01/29/liz… 16 hours ago
- Sorry, dear Atlantic: essential oils are probably not "the new antibiotics" wp.me/p1yLel-Bk via @wordpressdotcom 16 hours ago
- Genetically Modified Mosquitoes May Be Released in Florida Keys - Atlantic Mobile theatlantic.com/health/archive… 1 day ago
- 7 things I wish people understood about OCD vox.com/2015/1/28/7917… via @germanrlopez 1 day ago
- The Forgiveness Boost - Atlantic Mobile theatlantic.com/health/archive… 1 day ago
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
Category Archives: Clock Tutorials
This is a summary of my 1999 paper, following in the footsteps of the work I described here two days ago. The work described in that earlier post was done surprisingly quickly – in about a year – so I decided to do some more for my Masters Thesis.
The obvious next thing to do was to expose the quail to T-cycles, i.e., non-24h cycles. This is some arcane circadiana, so please refer to the series of posts on entrainment from yesterday and the two posts on seasonality and photoperiodism posted this morning so you can follow the discussion below:
There were three big reasons for me to attempt the T-cycle experiment at that time:
One of the assumptions in the study of circadian organization is that, at the level of molecules and cells, all vertebrate (and perhaps all animal) clocks work in roughly the same way. The diversity of circadian properties is understood to be a higher-level property of interacting multicellular and multi-organ circadian systems: how the clocks receive environmental information, how the multiple pacemakers communicate and synchronize with each other, how they convey the temporal information to the peripheral clocks in all the other cells in the body, and how peripheral clocks generate observable rhythms in biochemistry, physiology and behavior.
This April 09, 2006 post places another paper of ours (Reference #17) within a broader context of physiology, behavior, ecology and evolution.
The paper was a result of a “communal” experiment in the lab, i.e., it was not included in anyone’s Thesis. My advisor designed it and started the experiment with the first couple of birds. When I joined the lab, I did the experiment in an additional number of animals. When Chris joined the lab, he took over the project and did the rest of the lab work, including bringing in the idea for an additional experiment that was included, and some of the analysis. We all talked about it in our lab meetings for a long time. In the end, the boss did most of the analysis and all of the writing, so the order of authors faithfully reflects the relative contributions to the work.
What is not mentioned in the post below is an additional observation – that return of the food after the fasting period induced a phase-shift of the circadian system, so we also generated a Phase-Response Curve, suggesting that food-entrainable pacemaker in quail is, unlike in mammals, not separate from the light-entrainable system.
Finally, at the end of the post, I show some unpublished data – a rare event in science blogging.