Tylodina corticalis - shell variability

June 5, 2006
From: Bill Rudman

In response to Kevin Lee's message [#16722] about variability in shell shape in Tylodina fungina I looked out some photos of the southeastern and southern Australian species, T. corticalis. In the other two messages [ #16799, #16801], the shells are quite flattened, but at times animals are found with prominent radial ribbing on the shell, making them look quite like some species of the pulmonate limpet Siphonaria. At one time I thought the ribbed shells were a southern feature, but Gary Cobb's photo from southern Queensland [#10630 ], certainly proves that to be an unsupportable hypothesis.

Locality: Port Lonsdale, west head, Port Philip Bay, Victoria, 21 April 1980. on kelp (Laminaria ) in tide pools. 3 animals - 15, 21, 32 mm live found, largest photographed. AM C121669. Photo: Bill Rudman. 

Best wishes
Bill Rudman

Rudman, W.B., 2006 (Jun 5) Tylodina corticalis - shell variability. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16800

Factsheet

Tylodina corticalis

Related messages

  1. Tylodina corticalis on food source
    From: Gary Cobb, February 8, 2008
  2. Tylodina corticalis - feeding juvenile
    From: Bill Rudman, June 5, 2006
  3. Very large Tylodina corticalis from SE Australia
    From: Bill Rudman, June 5, 2006
  4. Tylodina corticalis from New South Wales
    From: Leanne & David Atkinson, August 14, 2003
  5. Tylodina corticalis from sthn Queensland
    From: Gary Cobb, August 5, 2003
  6. Tylodina corticalis from Lord Howe Island
    From: W.B. Rudman, January 21, 2003
  7. Tylodina corticalis from New South Wales
    From: Erik Schloegl, April 4, 2001

Show factsheet and all related messages