Hypselodoris carnea retracting its gills with H.infucata

September 5, 2005
From: Colin Ogden

Hi Bill,
The other day I found what I think is a H. carnea feeding together with a H. infucata. In the 1st photo the H. carnea has its gills extended, but in the second photo it has retracted its gills. Is this normal?

Locality: Sodwana Bay, South Africa. Indian Ocean coast. Depth: 12 metres. Length: 35 mm. August 2005. Coral reef. Photographer: Colin Ogden

Regards
Colin

scubaco@iafrica.com

Ogden C M, 2005 (Sep 5) Hypselodoris carnea retracting its gills with H.infucata. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14635

Dear Colin,
I am pretty sure this is Hypselosoris carnea. Terry Gosliner says, that the very similalr looking H. capensis doesn't extend up the Natal coast. Concerning the gills conracting. This is entirely normal for one major group of the dorids, which has a chamber into which the gill circlet is able to retract. The higher classification of the dorids is under quite extensive research at the moment but in the past the dorids have been divided in to two superfamilies called the Cryptobranchia [= Eudoridoidea] and the Phanerobranchia [=Anadoridiodea]. - Crypto = hidden, Phanero = naked, branchia = gills. As the name suggests the other major group of dorids, the Phanerobranchia have gills that can contract, but don't have a pocket to retreat into.
Best wishes,
Bill Rudman

Rudman, W.B., 2005 (Sep 5). Comment on Hypselodoris carnea retracting its gills with H.infucata by Colin Ogden. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14635

Factsheet

Hypselodoris carnea

Related messages

  1. Re: Hypselodoris carnea? from the Gulf of Kutch, India
    From: Dishant Parasharya, November 20, 2009
  2. Re: Variations in Hypselodoris carnea
    From: Colin Ogden, April 14, 2008
  3. Re: Variations in Hypselodoris carnea
    From: Colin Ogden, April 10, 2008
  4. Re: Thorunna florens from sthn Queensland
    From: Colin Ogden, September 28, 2007
  5. Hypselodoris carnea from Oman
    From: Brian Mayes, April 12, 2007
  6. Variations in Hypselodoris carnea
    From: Colin Ogden, October 14, 2005
  7. Hypselodoris cf carnea from South Africa
    From: Valda Fraser, January 6, 2001
  8. Hypselodoris carnea from Oman
    From: Gordon T. Smith, December 24, 2000
  9. Hypselodoris capensis & H. carnea
    From: Bill Rudman, July 28, 2000
  10. Re: Hypselodoris carnea v. capensis
    From: Terry Gosliner, December 16, 1999
  11. Hypselodoris capensis v H. carnea
    From: Valda Fraser, December 11, 1999

Show factsheet and all related messages