Echinoid Spermatozoa Data Request

Dear Colleagues,

As recently presented during the 17th IEC in Puerto de la Cruz, a colleague

and I are in the process of assembling a large database on echinoid

spermatozoa. Our goal is to cover as many species as possible in order to

better understand how echinoid sperm evolved. Our primary source of data has

so far been the literature, but we have also gathered novel data for some of

the more under-researched taxa.

We are now in the process of finalizing our analyses and would be extremely

grateful if you could support us with data on sea urchin spermatozoa so that

in an ideal scenario we can expand our list of species covered. We are

interested in the following information:

- Sperm/sperm head measurements (e.g. 6 µm long, 2 µm wide)

- Imagery showing sperm morphology (e.g. LM, SEM, video)

- Imagery showing sperm ultrastructure (e.g. SEM, TEM)

During the publication process of our study, these sperm data will be made

available via the SpermTree Database (https://spermtree.org/). We hope that

our comprehensive study will serve the echinoid community as a valuable

tool.

Should you have data on echinoid sperm and be willing to share it with us,

please contact me via

aziegler@biob.uni-bonn.de

Your help would be much appreciated.

Best,

Alex