Re: What's wrong with Elysia clarki?

September 9, 2006
From: Colin Redfern


Concerning message #17766:

Dear Bill,
These three photos of a 22 mm example of Elysia clarki from the Bahamas are in response to your request for photos of E. crispata and E. clarki that show the sole of the foot and the front of the parapodia.

I was in Abaco, Bahamas last month, and made a point of collecting and photographing several specimens, all of which fit the description of E. clarki. In each case the sole of the foot was as shown here - (the figured animal is in the act of turning, showing the posterior end of the sole as well as part of the left flank). The pale spots are less numerous on the sole, and are not separated by as many smaller dots. Each animal also had a parapodial gap, but it appears that this feature can quite easily be concealed. This can happen if the parapodia are positioned in such a way as to close the gap, as shown here, or if they overlap slightly. In each case the gap was clearly visible on the preserved animal.

Locality: Treasure Cay, 1m, Abaco, Bahamas, western Atlantic, 22 August 2006, On Batophora . Length: 22mm. Photographer: Colin Redfern.

Best wishes,
Colin

bahamianseashells@att.net

Redfern, C., 2006 (Sep 9) Re: What's wrong with Elysia clarki?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17782

Dear Colin,
Thanks for this quick response. It's nice to get an unequivocal example of Elysia clarki relatively far from its type locality in Florida. It would be interesting to know a little about the locality in which you found this animal. In Florida, Skip Pierce says it is confined to the mangroves, man-made canals and similar structures, rather than open coral reefs. Were your specimens found in a similar habitat?

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Sep 9). Comment on Re: What's wrong with Elysia clarki? by Colin Redfern. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/17782

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