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Re: Hatching Nothobranchius and etc.
- To: killietalk at aka_org
- Subject: Re: Hatching Nothobranchius and etc.
- From: Wright Huntley <jwwiii at pacbell_net>
- Date: Wed, 23 Apr 2003 12:44:26 -0700
- References: <firstname.lastname@example.org>
- User-agent: Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.0.2) Gecko/20030208 Netscape/7.02
Rjga at aol_com wrote:
In a message dated 4/23/03 3:20:16 PM Eastern Daylight Time,
dskatz at optonline_net writes:
As long as the cap of the vial is not tight, the eggs in the vial will be
under the same pressure as will the water surrounding the eggs.
One more point. It takes about 30 feet of water to increase gas pressure one
atmosphere, and divers usually rest at about 15 feet to equalize during this
most important (largest) decompression. A two foot deep aquarium would not
provide much pressure, even if there were gases to compress.
Pressure and compressibility are unrelated parameters (except that
compressibility is one kind of response to pressure -- but not the only
one). The vial equalized at the bottom of the 55G tank will have about 1
psi more pressure than it did at the surface (15.7 vs 14.7), and that
pressure will be on all surfaces, including the egg's. To the extent that
dissolved gas or ion transport are pressure dependent, there could be
If the egg does not compress at all, there will be no tendency for
*liquid* flow through the membranes of the chorion to equalize internal
pressure. The internal pressure will just go up about 1 psi. That does not
mean that other transport might not be enhanced or inhibited by the
Wright Huntley -- 209 521-0557 -- 731 Loletta Ave, Modesto CA 95351
When you are in mortal danger, you are supposed to dial 911, so that
the police can arrive on the scene some time later, identify your body,
and file reports in triplicate. -- Thomas Sowell 4/21/03
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