Chelidonura amoena - shape and colour variation
July 2, 2003
From: Atsushi Ono
![](/images/m10200a.jpg)
![](/images/m10200b.jpg)
Dear Bill,
Thank you for your comment on my "yellow spotted Chelidonura." Here are some photos showing variation in Chelidonura amoena, including some with "short tails" ones. In a separate message I have sent a photo of a 'short-tailed' C. pallida.
017 - has long tails, dark form.
018 - has short tails, about 40 mm long.
019 - has very short tails, about 50 mm long.
020 - has very few white dots on body and short tails.
021 - has half long tails.
I think the attached are all C. amoena. All are from Kerama Is., Okinawa Japan.
Sincerely,
Atsushi Ono
ononini@cosmos.ne.jp
Ono. A., 2003 (Jul 2) Chelidonura amoena - shape and colour variation. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/10200![](/images/m10200d.jpg)
Thanks Atsushi,
You certainly have shown us that specimens of Chelidonura can lack their characteristic 'tails'. I guess its the result of either a mistake during larval development or physical damage during the life of the slug. Concerning the identity of these animals, while 18, 19, 21 seem to be C. amoena, the other two [17, 20] look rather different. They are probably the same as Lindsay Warren's photos which I kept separate as Chelidonura cf. amoena. However Nishina's photos suggests they are indeed just a form of C. amoena. We still seem to have a lot to learn about these animals
Best wishes,
Bill Rudman
Related messages
-
Color variation in Chelidonura amoena from Lembeh
From: Mike Krampf, July 27, 2007 -
Re: Chelidonura amoena piggyback
From: Kristin Anderson, July 17, 2007 -
Chelidonura amoena piggyback
From: Kristin Anderson, July 12, 2007 -
Re: Chelidonura amoena from the Philippines
From: Jose Victor Santos, May 15, 2007 -
Re: Are Chelidonura electra and C. amoena the same?
From: Roberto Sozzani, November 24, 2006 -
Are Chelidonura electra and Chelidonura amoena one species?
From: Linda Ianniello, November 22, 2006 -
Chelidonura amoena from Malaysia
From: Asther M. Lau, August 12, 2006 -
Chelidonura amoena from Komodo, Indonesia?
From: Robert Whitton, July 26, 2006 -
Chelidonura amoena in Taiwan
From: Alex Tattersall, July 25, 2006 -
Pre-mating Ritual - Chelidonura amoena
From: Mike Krampf, June 7, 2006 -
Chelidonura amoena from Derawan, Indonesia
From: Gennaro Ciavarella, December 13, 2005 -
Chelidonura amoena in Malaysia
From: Asther M. Lau, September 11, 2003 -
Chelidonura amoena at Pulau Redang
From: Kheong Sann Chan, September 11, 2003 -
Chelidonura amoena mating
From: Paul Whitehead, June 21, 2003 -
Chelidonura amoena population explosion
From: Todd Garthwaite, May 24, 2003 -
Re: Chelidonura amoena spawning
From: Nishina Masayoshi, May 12, 2003 -
Chelidonura amoena spawning.
From: Johny Leffelaer, May 9, 2003 -
Chelidonura amoena from Malaysia
From: Kelvin Tan, April 24, 2003 -
Cross-species matings - Chelidonura
From: Richard Willan, April 10, 2003 -
Twin Tail Nudibranch from Malaysia
From: Spencer Huang, October 10, 2002 -
Chelidonura amoena from Malaysia
From: Richard Houghton, July 19, 2002 -
Chelidonura amoena from Malaysia
From: Maliza Anuar, July 19, 2002 -
Chelidonura flavolobata? from SE Sulawesi
From: Lindsay Warren, June 16, 2002 -
Re: Chelidonura amoena population explosion
From: Todd Garthwaite , June 10, 2002 -
Chelidonura amoena from Christmas Island
From: W.B. Rudman, April 30, 2002 -
Chelidonura amoena population explosion in Taipei
From: Todd Garthwaite, April 27, 2002 -
Chelidonura amoena from Taiwan
From: Todd Garthwaite, April 1, 2002 -
Chelidonura amoena - colour variation
From: Nishina Masayoshi, February 21, 2002 -
Chelidonura amoena from the Philippines
From: Mary Jane Adams , June 16, 2001 -
Chelidonura cf. amoena from SE Sulawesi
From: Lindsay Warren, March 1, 2000 -
Chelidonura amoena from the Philippines
From: Erwin Koehler, May 1, 1999