Ascidians are embedded in a common tunic. They share the
same atrial opening but have separate mouths. A colony is
formed by budding. I did once see this process with a
tunicate from the genus Botryllus in a Petri
dish in my study. Starting with one specimen it formed a
small colony within a few days,
Species of Botryllus can be found in many colours. From the deep blue one seen here as a background image to the bright red one below.
The pictures on this page were taken by Jan Parmentier
© Jan Parmentier and Wim van Egmond 1998
Published in August 1998 Micscape Magazine.
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