Cuthona sibogae from Port Stephens

February 7, 2003
From: David & Leanne Atkinson

Hi Bill,
It has been a pretty good summer for nudis this year. Last summer was very bad. Even the normally common ones were few and far between. Any ideas on that one?

Here is a few nudi we can't identify. Can you help? It came from Port Stephens, [New South Wales, eastern Australia].

David & Leanne Atkinson

atk@hunterlink.net.au

Atkinson, D. & Atkinson, L., 2003 (Feb 7) Cuthona sibogae from Port Stephens. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/9120

Dear David & Leanne,
This is Cuthona sibogae, a tropical visitor to the New South Wales coast, but certainly a more regular visitor than some species.

Concerning last year being a bad year. Much of the interesting Port Stephens' fauna are the tropical visitors. Unless conditions are right, the larvae will be unable to successfully move down the eastern Austalian coast and into the large bay we call Port Stephens. And to make it even more difficult, the sea slugs' special food items will have also needed to make the journey. On top of all that, conditions in Port Stephens need to be good as well, and we all know that even the best places can sometimes have bad years. Bays and inlets in particular are prone to rapidly changing physical conditions. I can't recall any particular event which could have affected Port Stephens last year, but I am not surprised that now and then bad years occur.
Cheers
Bill Rudman.

Rudman, W.B., 2003 (Feb 7). Comment on Cuthona sibogae from Port Stephens by David & Leanne Atkinson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/9120

Factsheet

Cuthona sibogae

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