[Annelida] Tubes, egg cases, and other structures made by annelids

Charley Eiseman via annelida%40net.bio.net (by ceiseman from gmail.com)
Sat Nov 29 17:24:47 EST 2008


Hello all,

I am working on a field guide to the 'tracks and signs' of North American
invertebrates.  The bulk of it will be devoted to insects and spiders, but
there will be scattered references to annelids, and I'm hoping some of you
can help me make the coverage as complete and accurate as possible.

One category of 'signs' is the tubes made by certain freshwater and marine
worms.  I am interested in information on which taxa make these, and how
exactly they go about constructing them.  I have collected photos of a few
such tubes here: http://charleyeiseman.com/annelid.html and I'm hoping
someone can tell me what they are (or might be).  There is also a question
about earthworm burrows at the bottom of that page.

The book will include photos of the egg cases of *Eisenia foetida* and an
unidentified leech.  If anyone can provide information on variations in
size, structure, and appearance among the egg cases of North American
annelids, that would be very helpful.

I will also be discussing earthworm castings and the midden piles of *Lumbricus
terrestris* (I have photos of both), as well as the effects on forest soils
of introduced earthworms in general.  I live in New England and I'm unclear
on the importance of exotic earthworms south of the glaciated region, so
comments on that would be helpful.

I think that essentially covers the annelid signs I'm aware of at this
point.  I would welcome any suggestions of other phenomena to consider, or
contributions of any photographs that would augment the ones I've already
mentioned.

Thanks,

Charley Eiseman
ceiseman from gmail.com
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