Tuesday, November 22, 2016

Hypsolebias trifasciatus egg

       I bought a small bag of Hypsolebias trifasciatus eggs at the Keystone Killie Club meeting on November twelve, 2016.  The eggs were marked "Coll 10.08.2016".  Since the eggs originated from a European fish keeper, that would indicate they were collected on August 8, 2016.  If the eggs needed a 3 to 4 month incubation period, they might be ready now on November 22, 2016 for wetting.  A couple of emails from Keystone members suggested checking the eggs to see if they had "eyed" up.  So I fired up the little microscope and wrestled with remembering how to operate it and take pictures.  Here goes:


      Here is the Hypsolebias trifasciatus egg collected from the peat today.  This shot is at 20x.  To my uneducated eye, I would assume the round circle at the bottom of the egg is the developing embryo, which just might be showing an eye within the inner circle.  In any case, I would not think that this egg is anywhere near ready for wetting.


      Same egg at 30x.  The possible eye shows up a little better.


      When I started this photo session, I was looking for water bugs from a standing sample of aquarium water with a thick algae mulm on the bottom.  The egg is in the corner, and all the little specks are some little creature, with three somewhat larger paramecia in the upper left corner.  Should have used tap water to look at the egg.
      Now the interesting part:


      Two much larger creatures came from somewhere and appeared to be grazing the surface of the egg.  They looked to be fairly developed.



      In this picture it looks fairly similar to a terrestrial deer tick.  Any ideas?
      I did let the water on the slide dry out, then threw this egg away.  Don't want those critters getting any bigger.