Growth stages in Dolabella auricularia

January 1, 2003
From: Mary Jane Adams

Hi Bill,
Here are some images of Dolabella auricularia at various stages of life.
Image 1 is a 2cm specimen I found at Tekat Larry, Lembeh Strait, Sulawesi Island, Indonesia on Nov. 19, 2002. Image 3 is one from an aggregation of baby sea hares I found from the same dive at Tekat Larry, Lembeh Strait, Sulawesi Island, Indonesia on Nov. 19, 2002. It was 12mm long.
Image 2 is another 2cm slug I shot in Lembeh Strait in April, 2002.
Image 4 is the front end of a lumbering, 50cm hulk, that I photographed on a night dive at George's Night Spot, Morovo Lagoon, Solomon Island in November, 2001. They are not very photogenic at this size.

Do these large opisthobranchs live longer than the average size ones?
Best regards,
Mary Jane

divepng@yahoo.com

Adams, MJ., 2003 (Jan 1) Growth stages in Dolabella auricularia. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/8724

Dear Mary Jane,
I see in one of the messages on the Life Span Page I say that Dolabella auricularia can live for six years in an aquarium, but I am afraid I didn't include a reference. very remiss of me. We don't know enough about opisthobranch life cycles, but most that have been studied have live for about a year or less. Many small species can complete a life cycle in a few weeks. Most Sea Hares live for about 12 months.
Cheers,
Bill Rudman

Rudman, W.B., 2003 (Jan 1). Comment on Growth stages in Dolabella auricularia by Mary Jane Adams . [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/8724

Factsheet

Dolabella auricularia

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