Re: Hexabranchus sanguineus from Egypt

June 24, 2005
From: Kamal El Tawil

Dear Bill,
Thanks for posting my pictures on your site and also for your comments and valuable information [message #13977 ].

Ss for the egg ribbon, I always thought that the one in my picture was that of Hexabranchus sanguineus. Perhaps I am now mistaken ? Do other species have similar egg ribbons ?
Best regards
Kamal el Tawil

ktawil@yahoo.com

El Tawil, K., 2005 (Jun 24) Re: Hexabranchus sanguineus from Egypt. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14083

Dear Kamal,
I am not saying that you are mistaken. Your egg  ribbon is probably that of Hexabranchus, but it is possible that another big dorid nudibranch may have laid the egg ribbon. I need to be sure that the 'facts' on the Forum are backed by evidence. Egg ribbons are a good example. An animal may lay an egg ribbon then crawl away. The another animal of a completely different species may crawl up to it just as a photographer swims by. If we assume that the closest animal to an egg ribbon is the 'mother' we will make many mistakes. That's why I asked.

You are probably right in assuming that it is the egg ribbon of Hexabranchus, but that is not the same as actually witnessing it being deposited. For the Forum to be a source of reliable information for you - and all other readers - I need to feel confident that any statement about an animal's biology or anatomy on the Forum is supported by first-hand evidence. I am happy for 'probable sightings' to be included, as long as we all know that we are not absolutely sure.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Jun 24). Comment on Re: Hexabranchus sanguineus from Egypt by Kamal El Tawil. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14083

Factsheet

Hexabranchus sanguineus

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