Hypselodoris apolegma mating

October 20, 2005
From: Mary Jane Adams

Hi Bill,
I found this trio of  "Hypselodoris apolegma" on a divesite with a heavy population of variously colored Hypselodoris bullocki. I have seen this situation where two slugs are mating and a third is trying to join in so often that it makes me wonder if there is a chemical exuded during mating that is a strong attractant to other slugs that may be in the area. The two that were mating were positioned in a way that allowed me to get a close-up view of the copulatory organs.

Locality:  T.K. 2, Lembeh Strait, Sulawesi Indonesia. Depth: 8 meters. Length: About 30 mm. 8 June 2005. Sand slope with patch reef. Photographer: M.J. Adams

I have been looking everywhere for "Hypselodoris apolegma " mating with another 'species', but so far I haven't seen any.

Best regards,
Mary Jane

divepng@yahoo.com

Adams, M.J., 2005 (Oct 20) Hypselodoris apolegma mating. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15038

Dear Mary Jane,
I agree that finding a mate and mating are almost certainly done by chemical signals. Mind you, looking at the unsuccessful 3rd animal in your close-up photo, which is trying to mate with the top animal's rhinophore, suggests touch may be involved as well.

Concerning "Hypselodoris apolegma" mating with another 'species', I'm afraid Phil Slosberg's photo [#6816] has yet to be replicated.

Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Oct 20). Comment on Hypselodoris apolegma mating by Mary Jane Adams. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/15038

Related messages

  1. Re: Purple sea slug
    From: Jason Sanders, March 3, 2009
  2. Re: Hypselodoris bullocki - eggs
    From: Jim Chambers, June 30, 2008
  3. Re: Hypselodoris bullockii? & H. apolegma mating
    From: Teresa Zuberb├╝hler, June 4, 2008
  4. Re: Hypselodoris bullockii? & H. apolegma mating
    From: Reindert Grooters & Mieke Snoek, June 4, 2008
  5. Hypselodoris bullockii? and H. apolegma mating
    From: Teresa (Zubi) Zuberb├╝hler, April 29, 2008
  6. Hypselodoris apolegma? from Indonesia
    From: Ken Tucker, August 3, 2007
  7. Re: Hypselodoris apolegma feeding?
    From: Ann Clear, August 3, 2007
  8. Hypselodoris apolegma feeding?
    From: Ann Clear, August 2, 2007
  9. Re: Hypselodoris apolegma mating
    From: Asther Lau, July 20, 2007
  10. Hypselodoris apolegma - feeding record [2]
    From: Richard Swann, March 19, 2007
  11. Hypselodoris apolegma feeding record
    From: Richard Swann, March 19, 2007
  12. Re: Hypselodoris apolegma with a parasite from Bali
    From: Leslie Harris, December 8, 2006
  13. Hypselodoris apolegma with a parasite from Bali
    From: Mike Krampf, December 7, 2006
  14. Hypselodoris apolegma feeding
    From: Roberto Sozzani, April 10, 2006
  15. Re: Hypselodoris apolegma mating
    From: Arief Wiriadinata, November 7, 2005
  16. Hypselodoris apolegma feeding
    From: Bob Whorton, July 4, 2005
  17. Re: Hypselodoris bullocki - feeding and care
    From: Mike Cheney, March 19, 2004
  18. Re: Hypselodoris bullocki - feeding and care.
    From: Mike Cheney, March 18, 2004
  19. Re: Hypselodoris apolegma with deformed gills
    From: Asther M. Lau, October 3, 2003
  20. Hypselodoris apolegma with deformed gills
    From: Ray Izumi, August 11, 2003
  21. Hypselodoris apolegma from Malaysia
    From: Asther M. Lau, July 5, 2003
  22. Hypselodoris apolegma from Malaysia
    From: Kelvin Tan, February 12, 2003
  23. Hypselodoris apolegma
    From: Bill Rudman, October 31, 2002
  24. Hypselodoris apolegma from west Malaysia
    From: Kheong Sann Chan, October 31, 2002
  25. Hypselodoris apolegma feeding
    From: Kheong Sann Chan, October 31, 2002
  26. Hypselodoris apolegma mating
    From: Kheong Sann Chan, October 31, 2002
  27. Hypselodoris bullocki-apolegma from Malaysia
    From: Richard Houghton, July 21, 2002
  28. 'Risbecia apolegma' from Malyasia
    From: Kheong Sann Chan, June 5, 2002
  29. Hypselodoris cf. bullocki = Risbecia apolegma
    From: Clay Carlson , May 1, 2002
  30. Hypselodoris cf. bullocki from Malaysia
    From: Kheong Sann Chan, April 27, 2002
  31. Hypselodoris bullocki colour group (1)
    From: Bernard Picton , April 9, 2002
  32. Hypselodoris bullocki? from Indonesia
    From: Tony Wu, April 7, 2001

Show factsheet and all related messages