WMAS Discussion Forum : Xenia Question?? http://www.utahreefs.com/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 08 Jul 2026 11:31:49 +0000 Sat, 31 Jul 2004 06:22:44 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.03 360 www.utahreefs.com/forum/RSS_post_feed.asp?TID=3135 <![CDATA[WMAS Discussion Forum]]> http://www.utahreefs.com/forum/1by1.gif http://www.utahreefs.com/forum/ <![CDATA[Xenia Question?? : I know there are pacemaker cells...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31282&title=xenia-question#31282 Author: Suzy
Subject: 3135
Posted: July 31 2004 at 6:22am

I know there are pacemaker cells in our heart that contract at a much
slower rate then your actual pacemaker (when our patients expire, their
pacemaker cells make a beat ). So, if we conclude that these cells are
elongated muscle-type cells (cardiac is muscle) with some sort of internal
sodium-potassium pump thing (like our cardiac muscles cells), can we
theorize that it is the electrolytes/chemicals in the water that cause the
contraction?

    Sodium, potassium, calcium, magnesium and others are critical
components in our cellular composition. We see patients die often
because of deficiencies or overload of critical electrolytes.

I bet it has something in its chemical structure that makes it's cells
contract. But, the original question, why it pulses, has to be gas
exchange......or nutrition....or light....

]]> Sat, 31 Jul 2004 06:22:44 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31282&title=xenia-question#31282 <![CDATA[Xenia Question?? : I believe we have long figured...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31279&title=xenia-question#31279 Author: Mark Peterson
Subject: 3135
Posted: July 30 2004 at 11:35pm

I believe we have long figured that Xenia pulses by cell contraction, in fact as I watch it pulse, it seems like the physics of it point to cell contraction. The fact that one person finds it pulsing or not pulsing because of light and another because of iodine or other chemical additives also seems to point to cell contraction as a response to physical, chemical and light energy factors.

The perplexing thing to me is that so many variables, both internal and external, contribute to contraction/pulsing. As the kids of my friend said when they saw Xenia for the first time in his new tank. "It's scary. We're scared that it will crawl out of the tank and come get us in the middle of the night with those creepy little hands!"

Edited by Mark Peterson]]> Fri, 30 Jul 2004 23:35:09 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31279&title=xenia-question#31279 <![CDATA[Xenia Question?? : Suzy wrote: But, I&#039;ve...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31277&title=xenia-question#31277 Author: BigBlue
Subject: 3135
Posted: July 30 2004 at 11:09pm

Originally posted by Suzy Suzy wrote:


But, I've always wondered HOW they pulse! They don't have
muscle tissue (or do they) and they don't have nerve
innervation....Your heart "pulses" because of both. How can this
cluster of cells move? How can it contract and release to make
the rhythmic motion we see?

I might just Google that one day!


Suzy, if you're interested in this stuff you might be interested to
know that cardiac cells and muscle cells (myotubes) even in a
petri dish will pulse and contract without nerve innervation.
There seems to be some sort of built in pacemaker in the
cardiac cells that's not well defined. It's very cool to watch. The
contraction of muscle cells happens by a dystrophin/ myosin
associated protein complex localized on the cell membrane-
the same proteins that cause Duchenne muscular dystrophy.]]> Fri, 30 Jul 2004 23:09:53 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31277&title=xenia-question#31277 <![CDATA[Xenia Question?? : My xenia all pulse at different...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31258&title=xenia-question#31258 Author: Crazy Tarzan
Subject: 3135
Posted: July 30 2004 at 4:13pm

My xenia all pulse at different speeds.  It grows all over in my tank and different spots pulse differently.  Some are in different flow areas, some in shade etc.  29 gal with 175 w mh and 64 w actinic.]]> Fri, 30 Jul 2004 16:13:54 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31258&title=xenia-question#31258 <![CDATA[Xenia Question?? : Mine pulsed like mad when I first...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31246&title=xenia-question#31246 Author: jglover
Subject: 3135
Posted: July 30 2004 at 2:05pm

Mine pulsed like mad when I first set up my tanks now it has slowed quite a bit.  I also have upgraded from 110W PC to 175MH with 110 PC so I would think it has more to do with nutrients then light. 

Oh and I think no research has been done due to the cost vs benefit ratio.

]]> Fri, 30 Jul 2004 14:05:57 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31246&title=xenia-question#31246 <![CDATA[Xenia Question?? : I have read that iodine will help...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31242&title=xenia-question#31242 Author: Travis
Subject: 3135
Posted: July 30 2004 at 12:52pm

I have read that iodine will help but I have watched mine run wild w/o any iodine being added (outside of what salt provides during water changes). 

]]> Fri, 30 Jul 2004 12:52:13 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31242&title=xenia-question#31242 <![CDATA[Xenia Question?? : Adam Blundell wrote: Hey Carl-...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31238&title=xenia-question#31238 Author: ssilcox
Subject: 3135
Posted: July 30 2004 at 12:20pm

Originally posted by Adam Blundell Adam Blundell wrote:

Hey Carl- maybe that is how you can kill your xenia.

Kinda like Kalk injections for aiptasia... maybe we should try iodine injections in xenia. Hmm - interesting thought.

]]> Fri, 30 Jul 2004 12:20:55 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31238&title=xenia-question#31238 <![CDATA[Xenia Question?? : Here is a whole other theory....]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31236&title=xenia-question#31236 Author: Adam Blundell
Subject: 3135
Posted: July 30 2004 at 11:54am

Here is a whole other theory.  Xenia is reported to pulse more when you add iodine.  Jake and I think it is good for the xenia, so we add iodine and make them pulse... but Borneman and Shimek told us they think it is a stress reaction and that we shouldn't add iodine because we are poisoning the xenia.

Hey Carl- maybe that is how you can kill your xenia.

Adam

]]> Fri, 30 Jul 2004 11:54:50 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31236&title=xenia-question#31236 <![CDATA[Xenia Question?? : From what I&#039;ve read, I don&#039;t...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31224&title=xenia-question#31224 Author: clismi
Subject: 3135
Posted: July 30 2004 at 10:44am

From what I've read, I don't think anyone is certain why, how, or when xenias pulse.

That amazes me.  Seems like there should be more research going on to answer such basic questions.

So why isn't there more research?

Maybe I need to set up 100 identical 100 gallon reef tanks and do some experiments.  Anyone want to fund me?

 

]]> Fri, 30 Jul 2004 10:44:56 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31224&title=xenia-question#31224 <![CDATA[Xenia Question?? : Suzy, I&#039;m not sure if it...]]> http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31211&title=xenia-question#31211 Author: Travis
Subject: 3135
Posted: July 30 2004 at 9:07am

Suzy, I'm not sure if it is known how they pulse but it is still unclear why they pulse. 

Some theory's include gas exchange, expelling waste, feeding (old theory), lighting, alk levels, PH, temp, health, etc.



Edited by Travis]]> Fri, 30 Jul 2004 09:07:25 +0000 http://www.utahreefs.com/forum/forum_posts.asp?TID=3135&PID=31211&title=xenia-question#31211