Re: Egg mass of Glossodoris vespa

November 20, 2007
From: Gary Cobb


Concerning message #21104:

Hi Bill and everyone!
Here is another instalment of the development of the Glossodoris vespa egg mass. Here are photos of the mass and eggs after 9 days. You can clearly see that the yolks are developing just fine. Yolks have formed lumps that will hopefully grown into nudibranchs.

Cheers
Gary Cobb

gary@nudibranch.com.au

Cobb, G.C., 2007 (Nov 20) Re: Egg mass of Glossodoris vespa. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21152

Dear Gary,

Thanks for keeping us up to date with the development of these eggs. What you are calling the yolks are in fact ther embryo - its starts as a fertilised egg and then through cell division gradually develops as an multicellular embryo. In slugs with planktonic veliger larvae the embryo develops into a shelled veliger larva which hatches out of the egg capsule and swims away. In G. vespa the embryo develops into a small crawling slug so if we are lucky you will be able to see and photograph baby slugs hatching out. The only problem is we still aren't clear on what this species eats. Unless you can discover that before the babies arrive then I am afraid they will starve.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Nov 20). Comment on Re: Egg mass of Glossodoris vespa by Gary Cobb. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/21152

Factsheet

Glossodoris vespa

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