RE: eggs

["David Lains" <david at zfin_org>]

Hello All

Now that astaxanthin is being commercially produced in microalgae culture it
is becoming more common in feeds.  I've noticed since I've been feeding
Golden pearls (500ppm astaxanthin) more of my eggs are colored.  The
Simpsonichthys sp Bahia south eggs are almost red.  Some of my Aphyosemion
have gone from clear to tan. It seems to be variable even in a group of
fish.

At work we are seeing the color in zebrafish eggs.  We've added Cyclop-eeze
(many times the astaxanthin of Golden pearls) to the dry food mix and now a
group spawning can have eggs ranging from clear to orange.  The males are
very easy to sex due to their red fins.

Best Fishes
David

><{{{>-----Original Message-----
><{{{>From: owner-killietalk at aka_org [mailto:owner-killietalk at aka_org]On
><{{{>Behalf Of Tyrone Genade
><{{{>Sent: Sunday, November 03, 2002 9:06 AM
><{{{>To: killietalk at aka_org
><{{{>Subject: Re: eggs
><{{{>
><{{{>
><{{{>On 3 Nov 2002, at 15:40, Dave Wood wrote:
><{{{>
><{{{>> > the question remains unanswered. Which sp. lay golden eggs & why?<
><{{{>>
><{{{>> From experience with dwarf cichlids I would guess that egg colour is
><{{{>> related to the adult fish's diet to some extent but may also be
><{{{>> species specific. Several Apisto's lay strongly coloured eggs so I
><{{{>> would suggest that this may be the case with some killis.
><{{{>
><{{{>The colour would come from lipid soluable compounds like B-carotene
><{{{>(yellow-orange) etc... and would almost certainly be related to diet.
><{{{>
><{{{>I guess if you feeding losts of mysis shrimp you wouldn't see much
><{{{>colour while if you feed bbs or krill you would see far more yellow
><{{{>etc... Antrocyanin is also lipid soluable so I guess it could be
><{{{>responsible for red colouration.
><{{{>
><{{{>Disclaimer: this is merely my humble opinion (free of charge) as a
><{{{>biochemist.
><{{{>
><{{{>tt4n
><{{{>Tyrone Genade
><{{{>tgenade at sun_ac.za
><{{{>http://www.tyronegenade.0catch.com
><{{{>cell#: 084-3354-977
><{{{>
><{{{>*************************************************************
><{{{>P450 Lab, Biochemistry Department
><{{{>University of Stellenbosch, 7602, South Africa
><{{{>Ph: +27-021-808-5876, fax: +27-021-808-5863
><{{{>**********************************************************
><{{{>
><{{{>"Seek your happiness in the Lord."
><{{{>                  Psalms 37:4
><{{{>
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