Saturday, May 1, 2010

Hatchlings... (about 6 weeks)

It's interesting that over the last week the nature of the variations in size and differentiation state across the population has changed a bit - while there is still a significant distribution of sizes, almost all has morphologically achieved very similar form.  (bigger versions).

While there are still a few tadpoles with white blobs of undifferentiated tissue that will become legs, many have developed not just the beginnings of rear legs, but also the toes. (bigger versions)

The bony plates are starting to more closely resemble the underpinnings of a frog and the generation of internal organs is progressing.  The mouth is still optimized for scrapping vegetable matter. (bigger versions)

Movement of the eyes has improved and many tadpoles seem to be capable of tracking movement in the vicinity.  There still doesn't seem to be any iris control, but there seems to be a change in the pigment patterning around the iris so perhaps that will come soon.

Many images from the project are here: http://tanukifu.com/Animals/hatchlingsMarch2010