Re: [Killietalk] Egg size

[leeh920226 at aol_com]

-----Original Message-----
From: kcook at sdgdocs_com
To: killietalk at aka_org
Sent: Wed, 4 Apr 2007 4:08 PM
Subject: [Killietalk] Egg size

    Some Aphyosemion lay large eggs (e.g. herzogi, primigenium) while 
others lay
small (e.g. striatum, bivs). Is this an indication of how closely 
related
these fish are, or is egg size random?

One for the taxonomists to chew on.

Keith

I have measured egg diameters  of  literally hundreds of species and I 
can attest to the fact that the egg diameter is very species specific, 
although young adolescent fish sometimes lay smaller eggs. Those eggs 
seem a little less viable than those from mature fish. The largest eggs 
are from some Rivulus, Lamprichthys and Gnatholebias species. The 
smallest are from some of the Nothobranchius species, like eggersi. 
Most are within the range of 0.8 mm diameter to about 2,2 mm diameter.I 
published much of this data several years ago in JAKA, but have 
literally tripled the data since then. Reference: JAKA Jan/Feb 2000 
Volume 33, No. 1

Lee Harper
Media, PA
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