Phyllodesmium briareum from Lembeh

February 17, 2007
From: Bruce Wight

Dear Bill

I spent a week in Lembeh in mid November, and saw many branchs that were new to me. I have sent photos of three species of Phyllodesmium, including this one of P. briareum that I thought would add to the Forum.

Locality: Lembeh Strait, 25-45 Feet, Sulawesi, Indonesia, Celebes Sea, November 2006, Crawling on reef . Length: 1-1 1/2 Inches. Photographer: Bruce Wight.

Thanks
Bruce Wight

bruce.c.wight@boeing.com

Wight, B.C., 2007 (Feb 17) Phyllodesmium briareum from Lembeh. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19339

Dear Bruce,
Its good to get more photos of these fascinating aeolids. As you can see in the enlargement alongside, this is one of the species in which the brown specks [zooxanthellae] are arranged in longitudinal lines along the length of the cerata and most of the body. Internally that means there are long thin tubes of the digestive gland running along the inside of the skin, providing a 'nursery' where the zooxanthellae can be bathed in sunlight and get the nutrients they require to photosynthesise.

Best wishes,
Bill Rudman

Rudman, W.B., 2007 (Feb 17). Comment on Phyllodesmium briareum from Lembeh by Bruce Wight. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/19339

Factsheet

Phyllodesmium briareum

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