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Author Topic: Are biological clocks fundamental to life?  (Read 632 times)

Anin

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Are biological clocks fundamental to life?
« on: 10/10/2015 10:13:48 »
I have read in a number of places that most species exhibit circadian rhythms. 

I have looked for information on those which are non-circadian, and only found information on ecoli, and even this seems debatable. e.g see http://blogs.scientificamerican.com/a-blog-around-the-clock/clocks-in-bacteria-v-how-about-e-coli/

So are there any clear cases out there of species that definitely have no type of circadian rhythms?

Alternatively are biological clocks of some type fundamental to life?

Please post any examples of clear cases on non circadian species - below.  I would really appreciate it.


 

Anin

  • Guest
Re: Are biological clocks fundamental to life?
« Reply #1 on: 10/10/2015 10:49:48 »
Also found the following on E. coli -  E. coli has three different peroxiredoxins and peroxiredoxin has been identified as a possible cross species biological clock - Peroxiredoxin may cycle between its chemical forms in the absence of other circadian rhythms.  see www.nature.com/news/a-biological-clock-to-wind-them-all-1.10654
 

Anin

  • Guest
Re: Are biological clocks fundamental to life?
« Reply #2 on: 20/10/2015 19:53:47 »
It is also interesting to note potential aligned clock and orientation mechanisms have been evidenced in various species and that many of these are thought to be magnetoreceptive. e.g in


1. The Monarch Butterfly  H Zhu - ‎2008 Hugh Dingle - 2014.  Steven Reppert 2007.  PA Guerra - ‎2012

2. The solar compass orientation of the desert locust  H Numata - ‎2015

3. Honey bees A Eban Rothschild 2012. 

4. Drosophilas

5. Talitrid amphipods (the sandhoppers)  A Ugolini - ‎2003 

6. Starlings.   Hoffman.

7. Homing pigeons F Bonadona et al 2000.

8. White throated sparrows  Kenneth P. Able 1986. Also see Muheim R, Phillips 2009

9. Turtles (DeRosa & Taylor 1978; Southwood & Avens 2011), b (Alerstam 2006). 

Chathurika D. Abeyrathne 2010 has suggested that radical pairs could influence the biological clock.

 

The Naked Scientists Forum

Re: Are biological clocks fundamental to life?
« Reply #2 on: 20/10/2015 19:53:47 »

 

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