Dolabella brazieri from northern New South Wales

April 26, 2003
From: Bill Rudman

Here are some photos of another Dolabrifera brazieri from northern New South Wales.

Coffs Harbour, nothern New South Wales, December 1990. 3cm long alive. AM C164486. Photos: Bill Rudman.

The lower left photo shows the branching filament at the tip of each of the large tubercles. Often this filament is retracted into a terminal pore. This is almost always the case in preserved specimens and explains why specimens of this species and Dolabrifera dolabrifera are often described as 'smooth'.

The lower right photo shows the opening into the mantle cavity through the partially fused parapodia. The groove in the top left corner is the external sperm groove which carries the animal's sperm forwards to the penis which sits retracted on the right side of the head. In the bottom right of the photo there is a large opening, which is the exhalent siphon discharging water from the mantle cavity. Inside this siphon there is a smaller tube with a black line emerging from it. The tube is the anus and I think the black line is a bit of waste being discharged.

Best wishes,
Bill Rudman

Rudman, W.B., 2003 (Apr 26) Dolabella brazieri from northern New South Wales. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/9784

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