Commensalism in Californian nudibranchs

July 30, 2005
From: James Lyle & Leslie Harris

Dear Dr. Rudman:
We have recently observed instances of commensal behavior involving nudibranchs from Southern California. Two of the hitchhikers are juvenile scaleworm polychaetes (family Polynoidae) on Tritona festiva [A, D] and Triopha catalinae [B, C]; the other is a juvenile amphipod Podocerus sp. on Tritona festiva [see message #14299 ].

Locality:  Buchannan's Reef, Rancho Palos Verdes. California, USA. Depth: 20 metres. 17 July 2005. rocky reef. Photographer: Jim Lyle

Scaleworms are known for being commensals; some will only attach to a single species while others can live on a variety of other creatures. In Martin & Britayev's 1998 review of all known symbiotic polychaetes (available at http://www.ceab.csic.es/~dani/Colleagues.html ) only two scaleworms are reported on nudibranchs. One is Halosydna brevisetosa on Melibe leonina - that was on this coast - and the other is Hololepidella nigropunctata on Phyllidia varicosa from Hong Kong. So whether this particular association is specific or general it's still fairly novel.

James L. Lyle
Leslie Harris

jlyle@adelphia.net

Lyle, J.L. & Harris, L., 2005 (Jul 30) Commensalism in Californian nudibranchs. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14298

Dear Jim & Leslie,
Thanks for these observations. There is definitely a whole world of associations out there that we have still to explore.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Jul 30). Comment on Commensalism in Californian nudibranchs by James Lyle & Leslie Harris. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14298

Related messages

  1. Re: Another goby on nudibranch
    From: Andy Eastwood, February 11, 2009
  2. Amphipod crustacean mimic (Southern California)
    From: Matt Segal, February 4, 2006
  3. Ceratosoma with Periclimenes imperator
    From: Corby James, September 17, 2005
  4. Amphipod commensal on Tritonia festiva
    From: James Lyle & Leslie Harris, July 30, 2005
  5. Another commensal scaleworm
    From: James Lyle & Leslie Harris, July 30, 2005
  6. Re: Another goby on nudibranch
    From: Bill Rudman, July 11, 2005
  7. Another goby on nudibranch
    From: Jerry Allen, July 5, 2005
  8. Commensal fish on Ceratosoma trilobatum
    From: John Weinberg, June 27, 2005
  9. Chromodoris coi with copepod
    From: Fredy Brauchli, March 22, 2004
  10. Mystery mark on Risbecia pulchella
    From: Stephanie Maleady, January 25, 2004
  11. It's a puzzle
    From: Mary Jane Adams, May 10, 2002
  12. Symbiotic stress
    From: Ali, April 10, 2002
  13. Ceratosoma trilobatum with commensal shrimp
    From: Mary Jane Adams, September 21, 2001
  14. Mutualism and symbiosis
    From: Lindsay Jennings, January 24, 2001
  15. Examples of Symbiosis
    From: Sutha, August 23, 2000
  16. Commensalistic Symbiosis
    From: Josh Williamsen, March 24, 2000
  17. Examples of endoecism
    From: Sonia, December 9, 1999
  18. Nudibranch with commensal shrimp
    From: Erik Schloegl, November 14, 1999
  19. Slugs and Microbes
    From: Daniel Vega Mendoza, June 5, 1999
  20. Information about commensalism
    From: Kara Hailey, February 20, 1999
  21. Commensalism
    From: Kerry, January 18, 1999
  22. Parasite and Mutualistic relationships
    From: Tammy Pearson, November 21, 1998
  23. "Commensalistic symbiosis"
    From: Laura, October 30, 1998
  24. symbiosis
    From: unidentified enquirer, October 25, 1998
  25. Symbiosis and commensalism
    From: , March 28, 1998

Show factsheet and all related messages