New Leech Species Named for Author Amy Tan
Using an innovative method for peering inside soft-bodied animals, researchers have described a new species of leech and named it after best-selling author Amy Tan.
Chtonobdella tanae, a terrestrial leech from Australia, is the first new species of invertebrate without chitinous or calcified tissues (like a shell or exoskeleton) to be described using computed tomography (CT) scanning. The work was recently published in the journal Zoologica Scripta, and represents a new avenue for studying soft-bodied organisms like worms and jellyfish—especially those like Chtonobdella tanae which, at about 1 centimeter long and 2 millimeters wide, is too small to dissect.
“Historically, to get an idea of what the internal structure of a soft-bodied invertebrate looks like, you have to dissect it by hand or painstakingly section the specimen and then reconstruct it in three dimensions,” said Michael Tessler, lead author on the paper and a student in the comparative biology doctoral program at the Museum's Richard Gilder Graduate School. “CT imaging is not only more precise than physical dissection, but it also doesn’t require us to destroy the specimen we’re studying.”