Geitodoris planata - mating
May 24, 2005
From: Philipp Kauffmann
Hello everybody,
The first picture shows a single Geitodoris planata. Is she feeding?
The other two pictures show two Geitodoris planata. WE watched them for about 5 minutse and they didn't move. Are they pairing? If yes how do they do it? Both animals have different colours. Is it because of their different sex?
Locality: Grevelingen Meer, Netherlands. Depth: 10 m. Length: 8-10 cm. 15 May 2005. Photographer: Philipp Kauffmann
Thanks a lot!
Philipp
philipp@dive2paradise.de
Kauffmann, P. F., 2005 (May 24) Geitodoris planata - mating. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/13820
Dear Philipp,
It's hard to know whether or not the animal is feeding because their mouth is hidden under the mantle skirt. It could be the animal is just crawling around, or perhaps having a rest. Most of these big flat dorid nudibranchs are sponge feeders, but unless we actually catch them feeding, we have to be very cautious when we find one on a sponge. It could be its food, or it could just be something it is crawling over.
As I said in answer to your other message [#13822], all nudibranch are hermaphrodite so there are obviously no sexual differences in colour, size or shape. The colour differences are just part of the natural colour variation we find in many species. I have inclused a close-up of the mantle alongside as it shows the tubercles rather well.
Best wishes,
Bill Rudman
Related messages
-
Is it really Discodoris confusa ?
From: Alain-Pierre Sittler, October 26, 2009 -
Re: Dorid from Slovenia [2]
From: Marina Poddubetskaia Ossokine, October 16, 2009 -
Adult Geitodoris planata
From: Marina Poddubetskaia Ossokine, October 12, 2009 -
Re: Geitodoris portmanni (?) from Sorrento
From: Marina Poddubetskaia Ossokine, October 12, 2009 -
Juvenile and subadult Geitodoris planata
From: Marina Poddubetskaia Ossokine, October 12, 2009 -
Re: Unknown Dorid from Italy
From: Marina Poddubetskaia Ossokine, October 12, 2009 -
Unknown Dorid from Italy
From: Cristian Magnani, May 31, 2007 -
Geitodoris portmanni (?) from Sorrento
From: Fabio Russo, February 6, 2006 -
Dorid from Slovenia [2]
From: Tom Turk, October 1, 2005 -
Re: Geitodoris planata from Devon, UK.
From: Judith Oakley, August 27, 2005 -
Geitodoris planata from Devon, UK.
From: Judith Oakley, August 23, 2005 -
Geitodoris planata research
From: Thierry Backeljau, March 4, 2004 -
Geitodoris planata research project
From: Peter H. van Bragt, September 4, 2003 -
Geitodoris planata from French Atlantic [1]
From: Marina Poddubetskaia, July 10, 2003 -
Geitodoris planata from French Atlantic [2]
From: Marina Poddubetskaia, July 10, 2003 -
Geitodoris planata from the Netherlands
From: Claire van Groningen, July 9, 2003 -
First sighting of Geitodoris on Helgoland, North Sea
From: Philipp Schubert, April 16, 2003 -
Re: Geitodoris planata
From: Jean-Pierre Bielecki , June 17, 2002 -
Re: Geitodoris planata? from Mediterranean
From: Juan Lucas Cervera, June 15, 2002 -
Re: Geitodoris planata? from Mediterranean
From: Peter H. van Bragt, June 15, 2002 -
Geitodoris planata? from Mediterranean
From: Jean-Pierre Bielecki , June 14, 2002 -
Re: Food of Dutch Geitodoris planata
From: Albert Koulman, September 2, 2001 -
Food of Dutch Geitodoris planata
From: Peter H. van Bragt, August 30, 2001 -
Re: Food of Dutch Geitodoris planata
From: Bernard Picton , August 30, 2001 -
Geitodoris planata - population explosion in Holland
From: Peter van Bragt , August 22, 2001 -
Geitodoris planata - distinguishing features
From: Peter H. van Bragt , August 22, 2001 -
Is this Archidoris pseudoargus ?
From: Xavier Merlin, June 13, 2001 -
Identification of Geitodoris planata
From: Bernard Picton , June 13, 2001 -
Geitodoris planata - acid glands, egg ribbon
From: Bernard Picton, June 13, 2001 -
Re: 'Dorid from France' is Geitodoris planata
From: Juan Lucas Cervera, August 27, 2000 -
'Dorid from France' is Geitodoris planata
From: Juan Lucas Cervera, August 26, 2000 -
re: Dorid from France
From: Jussi Evertsen, August 23, 2000 -
Dorid from France
From: Erwin Koehler, August 7, 2000 -
Archidoris pseudoargus from Holland
From: Peter H. van Bragt, August 8, 1999