Favorinus mirabilis from Mayotte

December 15, 2003
From: Marina Poddubetskaia

Dear Bill,
Here is a record of Favorinus mirabilis from Indian Ocean. Many specimens of this species were found on an a Hexabranchus egg-ribbon. The biggest guy was 15mm in length. So, it seems to be a tiny species.
I moved these specimens to better photograph them.

But also there were many specimens of Favorinus cf. mirabilis on the same egg-ribbon [see message #11580]. Photos of both species together on the egg ribbon are in message #11646.

Date: November 14, 2003
Location: Mayotte Island, France, Indian Ocean
Site: Choizil
Depth: 19m
Size : Upper: 15mm., Lower Left: 13mm., Lower Right: 8mm



Poddubetskaia, M., 2003 (Dec 15) Favorinus mirabilis from Mayotte. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11579

Dear Marina,
Thanks for these thought provoking photos. The small animals in the attached photos are clearly Favorinus mirabilis with the very characteristic subterminal purple spot on the cerata.

The size difference between these typical animals and the Favorinus cf. mirabilis you found at the same time might reflect a real maximum size difference or it could reflect the time the larvae arrived on the egg ribbon. That is the larvae of 'typical' Favorinus mirabilis arrived later and so the animals haven't had time to grow as large. This doesn't of course explain the absence of the purple spot in the larger animals. I think we will need to look at their anatomy.

Best wishes
Bill Rudman

Rudman, W.B., 2003 (Dec 15). Comment on Favorinus mirabilis from Mayotte by Marina Poddubetskaia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/11579

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