March 26, 2000
From: Cynthia Trowbridge
Hi. It warms my heart to see all the photos of Placida cf. dendritica. The species is common throughout SE Australia, including Tasmania, around Melbourne (Port Phillip Bay and Western Port), and Sydney. I am using molecular techniques to amplify and sequence mitochondrial genes of this "species" or potential "species complex" throughout the world. I have collected animals from Scotland, Ireland, Australia, New Zealand, Oregon, and Japan to do my molecular work. If any colleagues from South Africa, the Mediterranean, South America, or the east coast of the U.S. had animals, I would gladly pay expenses and a collection fee to include animals from those areas.
In terms of why I think there are more than one species grouped under the name, I have studied the ecology of this "species" pretty intensely since about 1984 and there are some unusual anomalies in the chemical ecology, physiology, behavioural ecology, etc. Such anomalies would be easier to explain if this was a species complex.
email@example.comTrowbridge, C., 2000 (Mar 26) Re: Placida cf. dendritica from Sydney. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/2149
If you have photos of any of the other geographic 'forms' I would be happy to post them on the Forum for comparison. If any one can help Cynthia with specimens, it would be great to resolve just what "Placida dendritica" is.
Placida dendritica in northern NZ
From: Ian Skipworth, January 10, 2007
Placida dendritica in northern New Zealand?
From: Ruth Armour, January 9, 2007
Placida cf. dendritica from Port Phillip Bay, Victoria
From: Trevor McMurrich, June 22, 2006
Placida cf dendritica and eggs
From: Rachel Przeslawski, April 11, 2003
Placida? from Japan
From: Nishina Masayoshi, April 27, 2002
Sacoglossan Placida dendritica
From: Shauna Spano, April 14, 2001
Placida cf. dendritica & hypodermic insemination
From: C. Trowbridge, March 26, 2000
Placida cf. dendritica from Sydney
From: Stephanie Clark, March 23, 2000
Placida? from Japan
From: Yasuhiro Shirai, February 16, 2000