who's able to tell me, what I've found here? I already asked someone who's familiar with Trichoptera, because I thought this could be Trichoptera eggs, but he wasn't sure about that.
Size about 5 x 9 mm. I discovered it on a wet, shady and mossy place, about 5 m away from a pond.
I'm curious about your answers - thanks in advance!
Lennart
2015-09-16, Northern Germany, S-H, Mohrkirch, fallow land
Edited by Lennart Bendixen on 13-11-2015 01:25
Posted by solito de solis on 11-11-2015 22:30
#2
HI
by experience and with the infos given, it seems to me
a Physa acuta egg mass
Physa acuta is an aquatic mollusk gastropod
SDS
you could see here the cycle of Physa
and the egg cluster on minute 11:00 YouTube Video
Edited by solito de solis on 11-11-2015 23:16
Posted by Lennart Bendixen on 11-11-2015 23:16
#3
Wow, amazing film! If only my french was a bit better...
Sorry, I missed to say there's no real wet connection between the pond and the place I found the object. They're separated by a small (and dry) path. So an aquatic gastropod would be unlikely, I think.
Nevertheless it looks quite similar to the white thing, that Tony identified as slug eggs here: http://www.diptera.info/forum/viewthread.php?thread_id=69355
But I really wonder which kind of (non-aquatic) snail or slug produces such an egg cluster. I can only find pictures of eggs, which are separated from each other. This isn't a distinctive character of aquatic gastropods, is it?
Posted by solito de solis on 12-11-2015 00:06
#4
Sorry, I was close ...
I have been guided by the size and the image of wet moss, where the egg mass is located
So far from the pond would be impossible, and after all Physa acuta need very clean water
I believe that number of eggs/cluster depends on genus and on living conditions for aquatic snails. We could say that they are characteristics but by experience I
often see variations in the number of eggs in a cluster but rarely variations for the size of the eggs. I don't know for non aquatic organisms.
SDS