Friday, June 01, 2007

In the bay 30 May 2007 II

Snail larvae. The water was loaded with these. Probably the periwinkle Littorina littorea. An invasive species introduced to Canada from Europe in the 1800. It is abundant on rocky shores throughout New England. I am not sure how far south they are found.

Here are 2 pictures:

Side view of the shell. the blurring at the top right of the image is due to the movement of cilia along the edge of their feeding apparatus called a velum.

End on view:

the picture is fuzzy but you can see the extended velum and the cilia along the edge.

And a video:


John Dennehy said...

Hey that is pretty cool. I think I've probably seen a gazillion of those snails, but never quite in that light. The movie is fantastic.

Just wondering, are you attending the GRC Microbial Population Biology?

amstar said...

I was pleasantly surprised by the quality of the movie. The images are small, but pretty good given the cost of the setup.

As for the GRC, I was not planning on going but it looks like a good meeting. I am trying to figure out if an abstract based on some biofilm data I have would be appropriate for the meeting.

John Dennehy said...

You should go. The symposia are fairly conscribed, but the poster sessions are quite wide ranging.