Aplysia parvula from Sulawesi

August 5, 2000
From: Lindsay Warren

Dear Bill

The attached photos are of different specimens of what we believe to be the
same species of Aplysia.

OWN156a (OS0592) was found at 16:30 on 30 July 1999 by Guillermo Moreno on the mooring line of a rompong (fish attracting device in deep water) at a depth of 30 ft between the islands of Kaledupa and Hoga in the Tukang Besi Archipelago, SE Sulawesi, Indonesia (Operation Wallacea).  L: 10 mm.

OWN156b (OS0811) was found at 10:30 on 25 September 1999 by Krzys Berkieta at a depth of 12 m on filamentous algae growing on plastic sheets which had been attached to lines beneath a rompong also moored between Kaledupa and Hoga in deep water (not the same one as above;  there were 9 rompongs in
the area last year).  L: 9 mm.

OWN156c (OS0790) was also found at 10:30 on 25 September 1999 by Krzys Berkieta between 10-12 m on a similar plastic 'frond'.  There is a slight difference between this and the other specimens in that the upper area of the head and anterior notum is quite pale in comparison to the rest of the body.  The rhinophores are also considerably paler.  L: 7 mm.

Photos: Lindsay Warren.

They all feature brown bodies, speckled with cream / pale yellow spots. The margins of the undulating parapodia, tips of rolled rhinophores and oral tentacles are edged in charcoal / black.  They all appear to have a thin shell beneath tissue between the parapodia.  This tissue has several black spots on the right side and one hole just off centre towards the left.  Oliver Miller found a 1.5 mm specimen (OWN172a / OS0638) - the smallest specimen found in the area to date - on 16 August at a depth of 11 m on filamentous algae on a mooring line on one of the sites on Pulau Hoga. Unfortunately the photo is not very clear so I have not bothered sending it to you.

I look forward to hearing what you think they might be.

All the best
Lindsay Warren

alldcl@compuserve.com

Warren, L., 2000 (Aug 5) Aplysia parvula from Sulawesi. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2801

Dear Lindsay,
These are all forms of Aplysia parvula.
Bill Rudman.

Rudman, W.B., 2000 (Aug 5). Comment on Aplysia parvula from Sulawesi by Lindsay Warren. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2801

Factsheet

Aplysia parvula

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