Re: What's up with this Chromodoris kuniei?

June 4, 2003
From: Peter H. van Bragt

Hello Lisa and Bill,
Just looking at the picture, I guess that the growth abnormality is a second mantle developing. The re-occurring coloration of the mantle's edge seems quite typical. Most likely there has been a malfunction at the level of signal transduction during the embryonic or larval development of this specimen. I assume that we know very little about the growth factors, chemical messengers and related recopters responsible for tissue (organ) differentation during embryonic development in seaslugs, but a large variety of similar growth development abnormalities are of course known from all sorts of other representatives of the animal kingdom.

A second guess could be that due to some injury during larval development and as a result of the healing process this growth abnormality developed. But then again it would be the result of misfiring growth factors and their receptors.
Which argument is most valid??? We will never know.
Peter

vanbragt.phjm@hsbrabant.nl

Dear Peter,
I really didn't think the Abnormalities Page would result in so many contributions. In most cases the abnormalities seem to be the result of some dvelopmental abnormality, as you suggest. Very few seem to be the result of injury repair in the metamorphosed slug. In Roberto's photos of the same slug it seems the damage also affected the development of the rhinophores as well
Best wishes
Bill Rudman

Rudman, W.B., 2003 (Jun 4). Comment on Re: What's up with this Chromodoris kuniei? by Peter H. van Bragt. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/10148

Factsheet

Chromodoris kuniei

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