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Introduction: This project began more than 2 years ago in November of 2006. For some time I had been breeding freshwater angelfish, Pterophyllum scalare. Of all the parts of angelfish development that I saw during my breeding, I was most interested in the early development of angelfish, from egg to free swimming fry. My general interest laid in the concept that in a mere seven days these animals would develop from a single fertilized egg cell, into a completely autonomous fry, a transformation that I think is remarkable. As a graduate student studying biomedical sciences, I am familiar with the workings of various microscopy equipment. To that end, after gaining permission from my supervisors, I began a 7 day microscopy based observation of a clutch of angelfish eggs that were newly laid and fertilized. The photos begin on day 1, approximately 12 hours after the eggs were laid.
Not long after taking the photos, which are outlined
on the following pages, I had a computer crash. At the time I thought I
had lost all my microscopy photos of the eggs and fry. Recently however,
while cleaning out some of our old backup computers I discovered that my
data was not lost! Much to my surprise almost all the data was still
present on our backup machine. After being filed away for more than 2
years I present my study. |
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